"LCD" not declared - Fehler bereits im Tutorial?

Hallo,

ich wollte heute in die Verwendung von LCD Displays einsteigen und habe mir einige Tutorials angsehen und aufgebaut.
Es scheitert jedoch ausnahmslos bereits beim Überprüfen des Sketches, die Fehlermeldung "lcd' was not declared in this scope" wird angezeigt.

Die Bibliothek für das Display ist installiert ( LiquidCrystal_I2C.h )
Ich habe die Sketches aus den Tutorials 1zu1 per Copy & Paste übernommen.

Ich ging eigentlich davon aus das Sketches aus solchen Tutorials fehlerfrei laufen müssten. Der Fehler tritt aber bei allen Tutorials auf die ich zu dem Thema finden konnte. Zwei Beispiele:

https://funduino.de/nr-19-i²c-display

Nach Suche im Netz stellte sich heraus das das Problem wohl nicht neu ist und einige Lösungsansätze wurden angeboten, geholfen hat jedoch keiner davon.

Frage: Wo und mit welcher Zeile muss "LCD" nun definiert werden ?
Und wo liegt in den Sketches nun der eigentliche Fehler ?

Die Hardware ist zwar ebenso wie in den Tutotials angegeben vorhanden, düfte aber keine Rolle spielen da der Fehler ja bereits vor dem Hochladen auftritt.

#include <Wire.h> // Wire Bibliothek einbinden
#include <LiquidCrystal_I2C.h> // Vorher hinzugefügte LiquidCrystal_I2C Bibliothek einbinden
LiquidCrystal_I2C lcd(0x27, 16, 2); //Hier wird festgelegt um was für einen Display es sich handelt. In diesem Fall eines mit 16 Zeichen in 2 Zeilen und der HEX-Adresse 0x27. Für ein vierzeiliges I2C-LCD verwendet man den Code "LiquidCrystal_I2C lcd(0x27, 20, 4)"

void setup()
{
  lcd.init(); //Im Setup wird der LCD gestartet
  lcd.backlight(); //Hintergrundbeleuchtung einschalten (lcd.noBacklight(); schaltet die Beleuchtung aus).
}

void loop()
{
  lcd.setCursor(0, 0);//Hier wird die Position des ersten Zeichens festgelegt. In diesem Fall bedeutet (0,0) das erste Zeichen in der ersten Zeile.
  lcd.print("Funduino GmbH");
  lcd.setCursor(0, 1);// In diesem Fall bedeutet (0,1) das erste Zeichen in der zweiten Zeile.
  lcd.print("Viel Erfolg!");
}

welche LiquidCrystal_I2C.h haben Sie installiert? (es gibt 2 verschiedene Libraries, eine verwendet lcd.init() und die andere verwendet lcd.begin())

Wenn Sie init() verwenden, benötigen Sie wahrscheinlich GitHub - johnrickman/LiquidCrystal_I2C: LiquidCrystal Arduino library for the DFRobot I2C LCD displays (und nicht GitHub - fdebrabander/Arduino-LiquidCrystal-I2C-library: Library for the LiquidCrystal LCD display con)

Wie J-M-L Jackson schon schrieb, welche Library hast Du denn installiert? Es gibt verschiedene im Library Manager der IDE und auch welche z.B. bei Github. Jede wird wieder anders angesprochen.

Gruß, Jürgen

Genau diese Version habe ich verwendet.
Der Fehler ist aber bei lcd.init() und lcd.begin() derselbe.

Ich habe mit dem Tutorial Nr.02 - I²C Display | Funduino - Kits und Anleitungen für Arduino
begonnen. Hier wurde diese Bibliothek empfohlen, daher habe ich mit dieser angefangen.

Könnten Sie die genaue Fehlermeldung vom Compiler kopieren und hier einfügen?

Und wie hast du die installiert ?

Probiere erst einen Sketch aus der Library aus.
Z.B. der HelloWorld.

Funktioniert dieser?

Wenn nicht, zeigte bitte einen Screenshot von deinem Library-Manager, Type auf "installed" setzen worauf wir exakt sehen, welche LCD Library du installierst hast.

denn, sowohl das HelloWorld wie auch der Sketch aus dem Link compilieren mit der richtigen Lib wie vorgesehen (mit Warnings - aber das kennen wir...)

Der Sketch in #1 geht ohne Warnung und ohne Fehlermeldung 1a durch.
Benutzt: lcd.begin() - also die lib von dfrobot.

wichtoig ist, das Du Dir nicht zwei der lcd-i2C-libs parallel installierst.
Das könnte zu Problemen führen, wenn die eine initialisiert und die andere dann aufgerufen wird.

Also bitte mal einstellen unter DATEI-VOREINSTELLUNGEN:
Den Haken setzen bei: "Ausführliche Ausgabe während Kompilierung"
Darunter das Feld CompilerWarnungen: ALLE

Dann einmal alles schliessen.
Wieder aufmachen und einmal(!) kompilieren.
Nicht ein zweites Mal, weil nur beim ersten Mal alle Bibliotheken mitgeloggt werden.
Beim zweiten Mal heisst es dann nur noch "Zuvor kompilierte Datei wird verwendet:"

Das, was im schwarzen Fenster steht mit STRG-A STRG-C markieren und kopieren und dann heir in Codetags wieder rein.

"lcd' was not declared in this scope"
deutet darauf hin, das das lcd-Objekt an der Stelle/bzw. global nicht verfügbar ist.
Es ist eigentlich immer ein Klammerfehler der geschweiften Klammern.

C:\Program Files (x86)\Arduino\arduino-builder -dump-prefs -logger=machine -hardware C:\Program Files (x86)\Arduino\hardware -hardware C:\Users\Jaif\AppData\Local\Arduino15\packages -tools C:\Program Files (x86)\Arduino\tools-builder -tools C:\Program Files (x86)\Arduino\hardware\tools\avr -tools C:\Users\Jaif\AppData\Local\Arduino15\packages -built-in-libraries C:\Program Files (x86)\Arduino\libraries -libraries C:\Users\Jaif\Documents\Arduino\libraries -fqbn=arduino:avr:nano:cpu=atmega328 -ide-version=10815 -build-path C:\Users\Jaif\AppData\Local\Temp\arduino_build_415269 -warnings=all -build-cache C:\Users\Jaif\AppData\Local\Temp\arduino_cache_685188 -prefs=build.warn_data_percentage=75 -prefs=runtime.tools.arduinoOTA.path=C:\Users\Jaif\AppData\Local\Arduino15\packages\arduino\tools\arduinoOTA\1.3.0 -prefs=runtime.tools.arduinoOTA-1.3.0.path=C:\Users\Jaif\AppData\Local\Arduino15\packages\arduino\tools\arduinoOTA\1.3.0 -prefs=runtime.tools.avr-gcc.path=C:\Users\Jaif\AppData\Local\Arduino15\packages\arduino\tools\avr-gcc\7.3.0-atmel3.6.1-arduino7 -prefs=runtime.tools.avr-gcc-7.3.0-atmel3.6.1-arduino7.path=C:\Users\Jaif\AppData\Local\Arduino15\packages\arduino\tools\avr-gcc\7.3.0-atmel3.6.1-arduino7 -prefs=runtime.tools.avrdude.path=C:\Users\Jaif\AppData\Local\Arduino15\packages\arduino\tools\avrdude\6.3.0-arduino17 -prefs=runtime.tools.avrdude-6.3.0-arduino17.path=C:\Users\Jaif\AppData\Local\Arduino15\packages\arduino\tools\avrdude\6.3.0-arduino17 -verbose C:\Users\Jaif\Documents\Arduino\sketch_aug22d\sketch_aug22d.ino
C:\Program Files (x86)\Arduino\arduino-builder -compile -logger=machine -hardware C:\Program Files (x86)\Arduino\hardware -hardware C:\Users\Jaif\AppData\Local\Arduino15\packages -tools C:\Program Files (x86)\Arduino\tools-builder -tools C:\Program Files (x86)\Arduino\hardware\tools\avr -tools C:\Users\Jaif\AppData\Local\Arduino15\packages -built-in-libraries C:\Program Files (x86)\Arduino\libraries -libraries C:\Users\Jaif\Documents\Arduino\libraries -fqbn=arduino:avr:nano:cpu=atmega328 -ide-version=10815 -build-path C:\Users\Jaif\AppData\Local\Temp\arduino_build_415269 -warnings=all -build-cache C:\Users\Jaif\AppData\Local\Temp\arduino_cache_685188 -prefs=build.warn_data_percentage=75 -prefs=runtime.tools.arduinoOTA.path=C:\Users\Jaif\AppData\Local\Arduino15\packages\arduino\tools\arduinoOTA\1.3.0 -prefs=runtime.tools.arduinoOTA-1.3.0.path=C:\Users\Jaif\AppData\Local\Arduino15\packages\arduino\tools\arduinoOTA\1.3.0 -prefs=runtime.tools.avr-gcc.path=C:\Users\Jaif\AppData\Local\Arduino15\packages\arduino\tools\avr-gcc\7.3.0-atmel3.6.1-arduino7 -prefs=runtime.tools.avr-gcc-7.3.0-atmel3.6.1-arduino7.path=C:\Users\Jaif\AppData\Local\Arduino15\packages\arduino\tools\avr-gcc\7.3.0-atmel3.6.1-arduino7 -prefs=runtime.tools.avrdude.path=C:\Users\Jaif\AppData\Local\Arduino15\packages\arduino\tools\avrdude\6.3.0-arduino17 -prefs=runtime.tools.avrdude-6.3.0-arduino17.path=C:\Users\Jaif\AppData\Local\Arduino15\packages\arduino\tools\avrdude\6.3.0-arduino17 -verbose C:\Users\Jaif\Documents\Arduino\sketch_aug22d\sketch_aug22d.ino
Using board 'nano' from platform in folder: C:\Users\Jaif\AppData\Local\Arduino15\packages\arduino\hardware\avr\1.8.3
Using core 'arduino' from platform in folder: C:\Users\Jaif\AppData\Local\Arduino15\packages\arduino\hardware\avr\1.8.3
Detecting libraries used...
"C:\\Users\\Jaif\\AppData\\Local\\Arduino15\\packages\\arduino\\tools\\avr-gcc\\7.3.0-atmel3.6.1-arduino7/bin/avr-g++" -c -g -Os -w -std=gnu++11 -fpermissive -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -Wno-error=narrowing -flto -w -x c++ -E -CC -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10815 -DARDUINO_AVR_NANO -DARDUINO_ARCH_AVR "-IC:\\Users\\Jaif\\AppData\\Local\\Arduino15\\packages\\arduino\\hardware\\avr\\1.8.3\\cores\\arduino" "-IC:\\Users\\Jaif\\AppData\\Local\\Arduino15\\packages\\arduino\\hardware\\avr\\1.8.3\\variants\\eightanaloginputs" "C:\\Users\\Jaif\\AppData\\Local\\Temp\\arduino_build_415269\\sketch\\sketch_aug22d.ino.cpp" -o nul
Alternatives for Wire.h: [Wire@1.0]
ResolveLibrary(Wire.h)
  -> candidates: [Wire@1.0]
"C:\\Users\\Jaif\\AppData\\Local\\Arduino15\\packages\\arduino\\tools\\avr-gcc\\7.3.0-atmel3.6.1-arduino7/bin/avr-g++" -c -g -Os -w -std=gnu++11 -fpermissive -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -Wno-error=narrowing -flto -w -x c++ -E -CC -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10815 -DARDUINO_AVR_NANO -DARDUINO_ARCH_AVR "-IC:\\Users\\Jaif\\AppData\\Local\\Arduino15\\packages\\arduino\\hardware\\avr\\1.8.3\\cores\\arduino" "-IC:\\Users\\Jaif\\AppData\\Local\\Arduino15\\packages\\arduino\\hardware\\avr\\1.8.3\\variants\\eightanaloginputs" "-IC:\\Users\\Jaif\\AppData\\Local\\Arduino15\\packages\\arduino\\hardware\\avr\\1.8.3\\libraries\\Wire\\src" "C:\\Users\\Jaif\\AppData\\Local\\Temp\\arduino_build_415269\\sketch\\sketch_aug22d.ino.cpp" -o nul
Alternatives for LiquidCrystal_I2C.h: [Arduino-LiquidCrystal-I2C-library-master LiquidCrystal_I2C LiquidCrystal_I2C]
ResolveLibrary(LiquidCrystal_I2C.h)
  -> candidates: [Arduino-LiquidCrystal-I2C-library-master LiquidCrystal_I2C LiquidCrystal_I2C]
"C:\\Users\\Jaif\\AppData\\Local\\Arduino15\\packages\\arduino\\tools\\avr-gcc\\7.3.0-atmel3.6.1-arduino7/bin/avr-g++" -c -g -Os -w -std=gnu++11 -fpermissive -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -Wno-error=narrowing -flto -w -x c++ -E -CC -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10815 -DARDUINO_AVR_NANO -DARDUINO_ARCH_AVR "-IC:\\Users\\Jaif\\AppData\\Local\\Arduino15\\packages\\arduino\\hardware\\avr\\1.8.3\\cores\\arduino" "-IC:\\Users\\Jaif\\AppData\\Local\\Arduino15\\packages\\arduino\\hardware\\avr\\1.8.3\\variants\\eightanaloginputs" "-IC:\\Users\\Jaif\\AppData\\Local\\Arduino15\\packages\\arduino\\hardware\\avr\\1.8.3\\libraries\\Wire\\src" "-IC:\\Users\\Jaif\\Documents\\Arduino\\libraries\\LiquidCrystal_I2C" "C:\\Users\\Jaif\\AppData\\Local\\Temp\\arduino_build_415269\\sketch\\sketch_aug22d.ino.cpp" -o nul
"C:\\Users\\Jaif\\AppData\\Local\\Arduino15\\packages\\arduino\\tools\\avr-gcc\\7.3.0-atmel3.6.1-arduino7/bin/avr-g++" -c -g -Os -w -std=gnu++11 -fpermissive -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -Wno-error=narrowing -flto -w -x c++ -E -CC -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10815 -DARDUINO_AVR_NANO -DARDUINO_ARCH_AVR "-IC:\\Users\\Jaif\\AppData\\Local\\Arduino15\\packages\\arduino\\hardware\\avr\\1.8.3\\cores\\arduino" "-IC:\\Users\\Jaif\\AppData\\Local\\Arduino15\\packages\\arduino\\hardware\\avr\\1.8.3\\variants\\eightanaloginputs" "-IC:\\Users\\Jaif\\AppData\\Local\\Arduino15\\packages\\arduino\\hardware\\avr\\1.8.3\\libraries\\Wire\\src" "-IC:\\Users\\Jaif\\Documents\\Arduino\\libraries\\LiquidCrystal_I2C" "C:\\Users\\Jaif\\AppData\\Local\\Arduino15\\packages\\arduino\\hardware\\avr\\1.8.3\\libraries\\Wire\\src\\Wire.cpp" -o nul
"C:\\Users\\Jaif\\AppData\\Local\\Arduino15\\packages\\arduino\\tools\\avr-gcc\\7.3.0-atmel3.6.1-arduino7/bin/avr-g++" -c -g -Os -w -std=gnu++11 -fpermissive -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -Wno-error=narrowing -flto -w -x c++ -E -CC -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10815 -DARDUINO_AVR_NANO -DARDUINO_ARCH_AVR "-IC:\\Users\\Jaif\\AppData\\Local\\Arduino15\\packages\\arduino\\hardware\\avr\\1.8.3\\cores\\arduino" "-IC:\\Users\\Jaif\\AppData\\Local\\Arduino15\\packages\\arduino\\hardware\\avr\\1.8.3\\variants\\eightanaloginputs" "-IC:\\Users\\Jaif\\AppData\\Local\\Arduino15\\packages\\arduino\\hardware\\avr\\1.8.3\\libraries\\Wire\\src" "-IC:\\Users\\Jaif\\Documents\\Arduino\\libraries\\LiquidCrystal_I2C" "C:\\Users\\Jaif\\AppData\\Local\\Arduino15\\packages\\arduino\\hardware\\avr\\1.8.3\\libraries\\Wire\\src\\utility\\twi.c" -o nul
"C:\\Users\\Jaif\\AppData\\Local\\Arduino15\\packages\\arduino\\tools\\avr-gcc\\7.3.0-atmel3.6.1-arduino7/bin/avr-g++" -c -g -Os -w -std=gnu++11 -fpermissive -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -Wno-error=narrowing -flto -w -x c++ -E -CC -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10815 -DARDUINO_AVR_NANO -DARDUINO_ARCH_AVR "-IC:\\Users\\Jaif\\AppData\\Local\\Arduino15\\packages\\arduino\\hardware\\avr\\1.8.3\\cores\\arduino" "-IC:\\Users\\Jaif\\AppData\\Local\\Arduino15\\packages\\arduino\\hardware\\avr\\1.8.3\\variants\\eightanaloginputs" "-IC:\\Users\\Jaif\\AppData\\Local\\Arduino15\\packages\\arduino\\hardware\\avr\\1.8.3\\libraries\\Wire\\src" "-IC:\\Users\\Jaif\\Documents\\Arduino\\libraries\\LiquidCrystal_I2C" "C:\\Users\\Jaif\\Documents\\Arduino\\libraries\\LiquidCrystal_I2C\\LiquidCrystal_I2C.cpp" -o nul
Generating function prototypes...
"C:\\Users\\Jaif\\AppData\\Local\\Arduino15\\packages\\arduino\\tools\\avr-gcc\\7.3.0-atmel3.6.1-arduino7/bin/avr-g++" -c -g -Os -w -std=gnu++11 -fpermissive -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -Wno-error=narrowing -flto -w -x c++ -E -CC -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10815 -DARDUINO_AVR_NANO -DARDUINO_ARCH_AVR "-IC:\\Users\\Jaif\\AppData\\Local\\Arduino15\\packages\\arduino\\hardware\\avr\\1.8.3\\cores\\arduino" "-IC:\\Users\\Jaif\\AppData\\Local\\Arduino15\\packages\\arduino\\hardware\\avr\\1.8.3\\variants\\eightanaloginputs" "-IC:\\Users\\Jaif\\AppData\\Local\\Arduino15\\packages\\arduino\\hardware\\avr\\1.8.3\\libraries\\Wire\\src" "-IC:\\Users\\Jaif\\Documents\\Arduino\\libraries\\LiquidCrystal_I2C" "C:\\Users\\Jaif\\AppData\\Local\\Temp\\arduino_build_415269\\sketch\\sketch_aug22d.ino.cpp" -o "C:\\Users\\Jaif\\AppData\\Local\\Temp\\arduino_build_415269\\preproc\\ctags_target_for_gcc_minus_e.cpp"
"C:\\Program Files (x86)\\Arduino\\tools-builder\\ctags\\5.8-arduino11/ctags" -u --language-force=c++ -f - --c++-kinds=svpf --fields=KSTtzns --line-directives "C:\\Users\\Jaif\\AppData\\Local\\Temp\\arduino_build_415269\\preproc\\ctags_target_for_gcc_minus_e.cpp"
Sketch wird kompiliert...
"C:\\Users\\Jaif\\AppData\\Local\\Arduino15\\packages\\arduino\\tools\\avr-gcc\\7.3.0-atmel3.6.1-arduino7/bin/avr-g++" -c -g -Os -Wall -Wextra -std=gnu++11 -fpermissive -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -Wno-error=narrowing -MMD -flto -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10815 -DARDUINO_AVR_NANO -DARDUINO_ARCH_AVR "-IC:\\Users\\Jaif\\AppData\\Local\\Arduino15\\packages\\arduino\\hardware\\avr\\1.8.3\\cores\\arduino" "-IC:\\Users\\Jaif\\AppData\\Local\\Arduino15\\packages\\arduino\\hardware\\avr\\1.8.3\\variants\\eightanaloginputs" "-IC:\\Users\\Jaif\\AppData\\Local\\Arduino15\\packages\\arduino\\hardware\\avr\\1.8.3\\libraries\\Wire\\src" "-IC:\\Users\\Jaif\\Documents\\Arduino\\libraries\\LiquidCrystal_I2C" "C:\\Users\\Jaif\\AppData\\Local\\Temp\\arduino_build_415269\\sketch\\sketch_aug22d.ino.cpp" -o "C:\\Users\\Jaif\\AppData\\Local\\Temp\\arduino_build_415269\\sketch\\sketch_aug22d.ino.cpp.o"
In file included from C:\Users\Jaif\Documents\Arduino\sketch_aug22d\sketch_aug22d.ino:4:0:
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:79:74: error: stray '\302' in program
   <title>Arduino-LiquidCrystal-I2C-library/LiquidCrystal_I2C.h at master · fdebrabander/Arduino-LiquidCrystal-I2C-library · GitHub</title>
                                                                          ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:79:75: error: stray '\267' in program
   <title>Arduino-LiquidCrystal-I2C-library/LiquidCrystal_I2C.h at master · fdebrabander/Arduino-LiquidCrystal-I2C-library · GitHub</title>
                                                                           ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:79:124: error: stray '\302' in program
   <title>Arduino-LiquidCrystal-I2C-library/LiquidCrystal_I2C.h at master · fdebrabander/Arduino-LiquidCrystal-I2C-library · GitHub</title>
                                                                                                                            ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:79:125: error: stray '\267' in program
   <title>Arduino-LiquidCrystal-I2C-library/LiquidCrystal_I2C.h at master · fdebrabander/Arduino-LiquidCrystal-I2C-library · GitHub</title>
                                                                                                                             ^
In file included from C:\Users\Jaif\Documents\Arduino\sketch_aug22d\sketch_aug22d.ino:4:0:
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:331:10: warning: missing terminating ' character
     <!-- '"` --><!-- </textarea></xmp> --></option></form><form class="js-site-search-form" role="search" aria-label="Site" data-scope-type="Repository" data-scope-id="3146658" data-scoped-search-url="/fdebrabander/Arduino-LiquidCrystal-I2C-library/search" data-owner-scoped-search-url="/users/fdebrabander/search" data-unscoped-search-url="/search" action="/fdebrabander/Arduino-LiquidCrystal-I2C-library/search" accept-charset="UTF-8" method="get">
          ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:331:10: error: missing terminating ' character
     <!-- '"` --><!-- </textarea></xmp> --></option></form><form class="js-site-search-form" role="search" aria-label="Site" data-scope-type="Repository" data-scope-id="3146658" data-scoped-search-url="/fdebrabander/Arduino-LiquidCrystal-I2C-library/search" data-owner-scoped-search-url="/users/fdebrabander/search" data-unscoped-search-url="/search" action="/fdebrabander/Arduino-LiquidCrystal-I2C-library/search" accept-charset="UTF-8" method="get">
          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from C:\Users\Jaif\Documents\Arduino\sketch_aug22d\sketch_aug22d.ino:4:0:
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:382:75: error: stray '\342' in program
       <span aria-hidden="true" class="d-inline-block ml-1 v-align-middle">↵</span>
                                                                           ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:382:76: error: stray '\206' in program
       <span aria-hidden="true" class="d-inline-block ml-1 v-align-middle">↵</span>
                                                                            ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:382:77: error: stray '\265' in program
       <span aria-hidden="true" class="d-inline-block ml-1 v-align-middle">↵</span>
                                                                             ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:387:56: error: stray '\342' in program
       <span class="d-inline-block ml-1 v-align-middle">↵</span>
                                                        ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:387:57: error: stray '\206' in program
       <span class="d-inline-block ml-1 v-align-middle">↵</span>
                                                         ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:387:58: error: stray '\265' in program
       <span class="d-inline-block ml-1 v-align-middle">↵</span>
                                                          ^
In file included from C:\Users\Jaif\Documents\Arduino\sketch_aug22d\sketch_aug22d.ino:4:0:
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:423:75: error: stray '\342' in program
       <span aria-hidden="true" class="d-inline-block ml-1 v-align-middle">↵</span>
                                                                           ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:423:76: error: stray '\206' in program
       <span aria-hidden="true" class="d-inline-block ml-1 v-align-middle">↵</span>
                                                                            ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:423:77: error: stray '\265' in program
       <span aria-hidden="true" class="d-inline-block ml-1 v-align-middle">↵</span>
                                                                             ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:428:56: error: stray '\342' in program
       <span class="d-inline-block ml-1 v-align-middle">↵</span>
                                                        ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:428:57: error: stray '\206' in program
       <span class="d-inline-block ml-1 v-align-middle">↵</span>
                                                         ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:428:58: error: stray '\265' in program
       <span class="d-inline-block ml-1 v-align-middle">↵</span>
                                                          ^
In file included from C:\Users\Jaif\Documents\Arduino\sketch_aug22d\sketch_aug22d.ino:4:0:
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:455:75: error: stray '\342' in program
       <span aria-hidden="true" class="d-inline-block ml-1 v-align-middle">↵</span>
                                                                           ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:455:76: error: stray '\206' in program
       <span aria-hidden="true" class="d-inline-block ml-1 v-align-middle">↵</span>
                                                                            ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:455:77: error: stray '\265' in program
       <span aria-hidden="true" class="d-inline-block ml-1 v-align-middle">↵</span>
                                                                             ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:460:56: error: stray '\342' in program
       <span class="d-inline-block ml-1 v-align-middle">↵</span>
                                                        ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:460:57: error: stray '\206' in program
       <span class="d-inline-block ml-1 v-align-middle">↵</span>
                                                         ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:460:58: error: stray '\265' in program
       <span class="d-inline-block ml-1 v-align-middle">↵</span>
                                                          ^
In file included from C:\Users\Jaif\Documents\Arduino\sketch_aug22d\sketch_aug22d.ino:4:0:
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:487:75: error: stray '\342' in program
       <span aria-hidden="true" class="d-inline-block ml-1 v-align-middle">↵</span>
                                                                           ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:487:76: error: stray '\206' in program
       <span aria-hidden="true" class="d-inline-block ml-1 v-align-middle">↵</span>
                                                                            ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:487:77: error: stray '\265' in program
       <span aria-hidden="true" class="d-inline-block ml-1 v-align-middle">↵</span>
                                                                             ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:492:56: error: stray '\342' in program
       <span class="d-inline-block ml-1 v-align-middle">↵</span>
                                                        ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:492:57: error: stray '\206' in program
       <span class="d-inline-block ml-1 v-align-middle">↵</span>
                                                         ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:492:58: error: stray '\265' in program
       <span class="d-inline-block ml-1 v-align-middle">↵</span>
                                                          ^
In file included from C:\Users\Jaif\Documents\Arduino\sketch_aug22d\sketch_aug22d.ino:4:0:
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:865:25: warning: missing terminating " character
             data-action="
                         ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:865:25: error: missing terminating " character
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:866:41: error: stray '#' in program
               input-entered:ref-selector#inputEntered
                                         ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:867:40: error: stray '#' in program
               tab-selected:ref-selector#tabSelected
                                        ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:868:38: error: stray '#' in program
               focus-list:ref-selector#focusFirstListMember
                                      ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:869:13: warning: missing terminating " character
             "
             ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:869:13: error: missing terminating " character
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:888:80: warning: missing terminating ' character
             <!-- TODO: this max-height is necessary or else the branch list won't scroll.  why? -->
                                                                                ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:888:80: error: missing terminating ' character
             <!-- TODO: this max-height is necessary or else the branch list won't scroll.  why? -->
                                                                                ^~~~~~~~~~~~~~~~~~~~
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:917:25: warning: missing terminating " character
             data-action="
                         ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:917:25: error: missing terminating " character
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:918:41: error: stray '#' in program
               input-entered:ref-selector#inputEntered
                                         ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:919:40: error: stray '#' in program
               tab-selected:ref-selector#tabSelected
                                        ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:920:38: error: stray '#' in program
               focus-list:ref-selector#focusFirstListMember
                                      ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:921:13: warning: missing terminating " character
             "
             ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:921:13: error: missing terminating " character
In file included from C:\Users\Jaif\Documents\Arduino\sketch_aug22d\sketch_aug22d.ino:4:0:
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:1117:49: warning: missing terminating " character
     <div data-target="readme-toc.content" class="Box mt-3 position-relative
                                                 ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:1117:49: error: missing terminating " character
     <div data-target="readme-toc.content" class="Box mt-3 position-relative
                                                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:1118:5: warning: missing terminating " character
     ">
     ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:1118:5: error: missing terminating " character
     ">
     ^~
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:1217:69: error: stray '#' in program
         <td id="LC1" class="blob-code blob-code-inner js-file-line">#<span class="pl-k">ifndef</span> FDB_LIQUID_CRYSTAL_I2C_H</td>
                                                                     ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:1221:69: error: stray '#' in program
         <td id="LC2" class="blob-code blob-code-inner js-file-line">#<span class="pl-k">define</span> <span class="pl-en">FDB_LIQUID_CRYSTAL_I2C_H</span></td>
                                                                     ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:1230:69: error: stray '#' in program
         <td id="LC4" class="blob-code blob-code-inner js-file-line">#<span class="pl-k">include</span> <span class="pl-s"><span class="pl-pds">&lt;</span>inttypes.h<span class="pl-pds">&gt;</span></span></td>
                                                                     ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:1234:69: error: stray '#' in program
         <td id="LC5" class="blob-code blob-code-inner js-file-line">#<span class="pl-k">include</span> <span class="pl-s"><span class="pl-pds">&lt;</span>Print.h<span class="pl-pds">&gt;</span></span></td>
                                                                     ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:1247:69: error: stray '#' in program
         <td id="LC8" class="blob-code blob-code-inner js-file-line">#<span class="pl-k">define</span> <span class="pl-en">LCD_CLEARDISPLAY</span> <span class="pl-c1">0x01</span></td>
                                                                     ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:1251:69: error: stray '#' in program
         <td id="LC9" class="blob-code blob-code-inner js-file-line">#<span class="pl-k">define</span> <span class="pl-en">LCD_RETURNHOME</span> <span class="pl-c1">0x02</span></td>
                                                                     ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:1255:70: error: stray '#' in program
         <td id="LC10" class="blob-code blob-code-inner js-file-line">#<span class="pl-k">define</span> <span class="pl-en">LCD_ENTRYMODESET</span> <span class="pl-c1">0x04</span></td>
                                                                      ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:1259:70: error: stray '#' in program
         <td id="LC11" class="blob-code blob-code-inner js-file-line">#<span class="pl-k">define</span> <span class="pl-en">LCD_DISPLAYCONTROL</span> <span class="pl-c1">0x08</span></td>
                                                                      ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:1263:70: error: stray '#' in program
         <td id="LC12" class="blob-code blob-code-inner js-file-line">#<span class="pl-k">define</span> <span class="pl-en">LCD_CURSORSHIFT</span> <span class="pl-c1">0x10</span></td>
                                                                      ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:1267:70: error: stray '#' in program
         <td id="LC13" class="blob-code blob-code-inner js-file-line">#<span class="pl-k">define</span> <span class="pl-en">LCD_FUNCTIONSET</span> <span class="pl-c1">0x20</span></td>
                                                                      ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:1271:70: error: stray '#' in program
         <td id="LC14" class="blob-code blob-code-inner js-file-line">#<span class="pl-k">define</span> <span class="pl-en">LCD_SETCGRAMADDR</span> <span class="pl-c1">0x40</span></td>
                                                                      ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:1275:70: error: stray '#' in program
         <td id="LC15" class="blob-code blob-code-inner js-file-line">#<span class="pl-k">define</span> <span class="pl-en">LCD_SETDDRAMADDR</span> <span class="pl-c1">0x80</span></td>
                                                                      ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:1288:70: error: stray '#' in program
         <td id="LC18" class="blob-code blob-code-inner js-file-line">#<span class="pl-k">define</span> <span class="pl-en">LCD_ENTRYRIGHT</span> <span class="pl-c1">0x00</span></td>
                                                                      ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:1292:70: error: stray '#' in program
         <td id="LC19" class="blob-code blob-code-inner js-file-line">#<span class="pl-k">define</span> <span class="pl-en">LCD_ENTRYLEFT</span> <span class="pl-c1">0x02</span></td>
                                                                      ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:1296:70: error: stray '#' in program
         <td id="LC20" class="blob-code blob-code-inner js-file-line">#<span class="pl-k">define</span> <span class="pl-en">LCD_ENTRYSHIFTINCREMENT</span> <span class="pl-c1">0x01</span></td>
                                                                      ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:1300:70: error: stray '#' in program
         <td id="LC21" class="blob-code blob-code-inner js-file-line">#<span class="pl-k">define</span> <span class="pl-en">LCD_ENTRYSHIFTDECREMENT</span> <span class="pl-c1">0x00</span></td>
                                                                      ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:1313:70: error: stray '#' in program
         <td id="LC24" class="blob-code blob-code-inner js-file-line">#<span class="pl-k">define</span> <span class="pl-en">LCD_DISPLAYON</span> <span class="pl-c1">0x04</span></td>
                                                                      ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:1317:70: error: stray '#' in program
         <td id="LC25" class="blob-code blob-code-inner js-file-line">#<span class="pl-k">define</span> <span class="pl-en">LCD_DISPLAYOFF</span> <span class="pl-c1">0x00</span></td>
                                                                      ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:1321:70: error: stray '#' in program
         <td id="LC26" class="blob-code blob-code-inner js-file-line">#<span class="pl-k">define</span> <span class="pl-en">LCD_CURSORON</span> <span class="pl-c1">0x02</span></td>
                                                                      ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:1325:70: error: stray '#' in program
         <td id="LC27" class="blob-code blob-code-inner js-file-line">#<span class="pl-k">define</span> <span class="pl-en">LCD_CURSOROFF</span> <span class="pl-c1">0x00</span></td>
                                                                      ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:1329:70: error: stray '#' in program
         <td id="LC28" class="blob-code blob-code-inner js-file-line">#<span class="pl-k">define</span> <span class="pl-en">LCD_BLINKON</span> <span class="pl-c1">0x01</span></td>
                                                                      ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:1333:70: error: stray '#' in program
         <td id="LC29" class="blob-code blob-code-inner js-file-line">#<span class="pl-k">define</span> <span class="pl-en">LCD_BLINKOFF</span> <span class="pl-c1">0x00</span></td>
                                                                      ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:1346:70: error: stray '#' in program
         <td id="LC32" class="blob-code blob-code-inner js-file-line">#<span class="pl-k">define</span> <span class="pl-en">LCD_DISPLAYMOVE</span> <span class="pl-c1">0x08</span></td>
                                                                      ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:1350:70: error: stray '#' in program
         <td id="LC33" class="blob-code blob-code-inner js-file-line">#<span class="pl-k">define</span> <span class="pl-en">LCD_CURSORMOVE</span> <span class="pl-c1">0x00</span></td>
                                                                      ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:1354:70: error: stray '#' in program
         <td id="LC34" class="blob-code blob-code-inner js-file-line">#<span class="pl-k">define</span> <span class="pl-en">LCD_MOVERIGHT</span> <span class="pl-c1">0x04</span></td>
                                                                      ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:1358:70: error: stray '#' in program
         <td id="LC35" class="blob-code blob-code-inner js-file-line">#<span class="pl-k">define</span> <span class="pl-en">LCD_MOVELEFT</span> <span class="pl-c1">0x00</span></td>
                                                                      ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:1371:70: error: stray '#' in program
         <td id="LC38" class="blob-code blob-code-inner js-file-line">#<span class="pl-k">define</span> <span class="pl-en">LCD_8BITMODE</span> <span class="pl-c1">0x10</span></td>
                                                                      ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:1375:70: error: stray '#' in program
         <td id="LC39" class="blob-code blob-code-inner js-file-line">#<span class="pl-k">define</span> <span class="pl-en">LCD_4BITMODE</span> <span class="pl-c1">0x00</span></td>
                                                                      ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:1379:70: error: stray '#' in program
         <td id="LC40" class="blob-code blob-code-inner js-file-line">#<span class="pl-k">define</span> <span class="pl-en">LCD_2LINE</span> <span class="pl-c1">0x08</span></td>
                                                                      ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:1383:70: error: stray '#' in program
         <td id="LC41" class="blob-code blob-code-inner js-file-line">#<span class="pl-k">define</span> <span class="pl-en">LCD_1LINE</span> <span class="pl-c1">0x00</span></td>
                                                                      ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:1387:70: error: stray '#' in program
         <td id="LC42" class="blob-code blob-code-inner js-file-line">#<span class="pl-k">define</span> <span class="pl-en">LCD_5x10DOTS</span> <span class="pl-c1">0x04</span></td>
                                                                      ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:1391:70: error: stray '#' in program
         <td id="LC43" class="blob-code blob-code-inner js-file-line">#<span class="pl-k">define</span> <span class="pl-en">LCD_5x8DOTS</span> <span class="pl-c1">0x00</span></td>
                                                                      ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:1404:70: error: stray '#' in program
         <td id="LC46" class="blob-code blob-code-inner js-file-line">#<span class="pl-k">define</span> <span class="pl-en">LCD_BACKLIGHT</span> <span class="pl-c1">0x08</span></td>
                                                                      ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:1408:70: error: stray '#' in program
         <td id="LC47" class="blob-code blob-code-inner js-file-line">#<span class="pl-k">define</span> <span class="pl-en">LCD_NOBACKLIGHT</span> <span class="pl-c1">0x00</span></td>
                                                                      ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:1417:70: error: stray '#' in program
         <td id="LC49" class="blob-code blob-code-inner js-file-line">#<span class="pl-k">define</span> <span class="pl-en">En</span> B00000100  <span class="pl-c"><span class="pl-c">//</span> Enable bit</span></td>
                                                                      ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:1421:70: error: stray '#' in program
         <td id="LC50" class="blob-code blob-code-inner js-file-line">#<span class="pl-k">define</span> <span class="pl-en">Rw</span> B00000010  <span class="pl-c"><span class="pl-c">//</span> Read/Write bit</span></td>
                                                                      ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:1425:70: error: stray '#' in program
         <td id="LC51" class="blob-code blob-code-inner js-file-line">#<span class="pl-k">define</span> <span class="pl-en">Rs</span> B00000001  <span class="pl-c"><span class="pl-c">//</span> Register select bit</span></td>
                                                                      ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:1896:71: error: stray '#' in program
         <td id="LC165" class="blob-code blob-code-inner js-file-line">#<span class="pl-k">endif</span> <span class="pl-c"><span class="pl-c">//</span> FDB_LIQUID_CRYSTAL_I2C_H</span></td>
                                                                       ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:1936:12: warning: missing terminating ' character
       <!-- '"` --><!-- </textarea></xmp> --></option></form><form class="js-jump-to-line-form Box-body d-flex" action="" accept-charset="UTF-8" method="get">
            ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:1936:12: error: missing terminating ' character
       <!-- '"` --><!-- </textarea></xmp> --></option></form><form class="js-jump-to-line-form Box-body d-flex" action="" accept-charset="UTF-8" method="get">
            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from C:\Users\Jaif\Documents\Arduino\sketch_aug22d\sketch_aug22d.ino:4:0:
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:2004:12: error: stray '\342' in program
     You can’t perform that action at this time.
            ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:2004:13: error: stray '\200' in program
     You can’t perform that action at this time.
             ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:2004:14: error: stray '\231' in program
     You can’t perform that action at this time.
              ^
In file included from C:\Users\Jaif\Documents\Arduino\sketch_aug22d\sketch_aug22d.ino:4:0:
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:7:1: error: expected unqualified-id before '<' token
 <!DOCTYPE html>
 ^
In file included from C:\Users\Jaif\Documents\Arduino\sketch_aug22d\sketch_aug22d.ino:4:0:
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:200:27: error: 'up' does not name a type; did you mean 'u8'?
                 Sign&nbsp;up
                           ^~
                           u8
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:227:275: error: expected unqualified-id before '<' token
                     <a href="/features" class="py-2 lh-condensed-ultra d-block Link--primary no-underline h5 Bump-link--hover" data-ga-click="(Logged out) Header, go to Features">Features <span class="Bump-link-symbol float-right text-normal color-text-tertiary pr-3">&rarr;</span></a>
                                                                                                                                                                                                                                                                                   ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:231:253: error: expected unqualified-id before '<' token
                           <li class="edge-item-fix"><a href="/mobile" class="py-2 lh-condensed-ultra d-block Link--secondary no-underline f5 Bump-link--hover">Mobile <span class="Bump-link-symbol float-right text-normal color-text-tertiary pr-3">&rarr;</span></a></li>
                                                                                                                                                                                                                                                             ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:232:264: error: expected unqualified-id before '<' token
                           <li class="edge-item-fix"><a href="/features/actions" class="py-2 lh-condensed-ultra d-block Link--secondary no-underline f5 Bump-link--hover">Actions <span class="Bump-link-symbol float-right text-normal color-text-tertiary pr-3">&rarr;</span></a></li>
                                                                                                                                                                                                                                                                        ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:233:270: error: expected unqualified-id before '<' token
                           <li class="edge-item-fix"><a href="/features/codespaces" class="py-2 lh-condensed-ultra d-block Link--secondary no-underline f5 Bump-link--hover">Codespaces <span class="Bump-link-symbol float-right text-normal color-text-tertiary pr-3">&rarr;</span></a></li>
                                                                                                                                                                                                                                                                              ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:234:266: error: expected unqualified-id before '<' token
                           <li class="edge-item-fix"><a href="/features/packages" class="py-2 lh-condensed-ultra d-block Link--secondary no-underline f5 Bump-link--hover">Packages <span class="Bump-link-symbol float-right text-normal color-text-tertiary pr-3">&rarr;</span></a></li>
                                                                                                                                                                                                                                                                          ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:235:266: error: expected unqualified-id before '<' token
                           <li class="edge-item-fix"><a href="/features/security" class="py-2 lh-condensed-ultra d-block Link--secondary no-underline f5 Bump-link--hover">Security <span class="Bump-link-symbol float-right text-normal color-text-tertiary pr-3">&rarr;</span></a></li>
                                                                                                                                                                                                                                                                          ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:236:273: error: expected unqualified-id before '<' token
                           <li class="edge-item-fix"><a href="/features/code-review/" class="py-2 lh-condensed-ultra d-block Link--secondary no-underline f5 Bump-link--hover">Code review <span class="Bump-link-symbol float-right text-normal color-text-tertiary pr-3">&rarr;</span></a></li>
                                                                                                                                                                                                                                                                                 ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:237:263: error: expected unqualified-id before '<' token
                           <li class="edge-item-fix"><a href="/features/issues/" class="py-2 lh-condensed-ultra d-block Link--secondary no-underline f5 Bump-link--hover">Issues <span class="Bump-link-symbol float-right text-normal color-text-tertiary pr-3">&rarr;</span></a></li>
                                                                                                                                                                                                                                                                       ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:238:274: error: expected unqualified-id before '<' token
                           <li class="edge-item-fix"><a href="/features/integrations" class="py-2 lh-condensed-ultra d-block Link--secondary no-underline f5 Bump-link--hover">Integrations <span class="Bump-link-symbol float-right text-normal color-text-tertiary pr-3">&rarr;</span></a></li>
                                                                                                                                                                                                                                                                                  ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:244:323: error: expected unqualified-id before '<' token
                       <li class="edge-item-fix"><a href="/sponsors" class="py-2 lh-condensed-ultra d-block no-underline Link--primary no-underline h5 Bump-link--hover" data-ga-click="(Logged out) Header, go to Sponsors">GitHub Sponsors <span class="Bump-link-symbol float-right text-normal color-text-tertiary pr-3">&rarr;</span></a></li>
                                                                                                                                                                                                                                                                                                                                   ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:245:339: error: expected unqualified-id before '<' token
                       <li class="edge-item-fix"><a href="/customer-stories" class="py-2 lh-condensed-ultra d-block no-underline Link--primary no-underline h5 Bump-link--hover" data-ga-click="(Logged out) Header, go to Customer stories">Customer stories<span class="Bump-link-symbol float-right text-normal color-text-tertiary pr-3">&rarr;</span></a></li>
                                                                                                                                                                                                                                                                                                                                                   ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:268:307: error: expected unqualified-id before '<' token
                       <li class="edge-item-fix"><a href="/explore" class="py-2 lh-condensed-ultra d-block Link--primary no-underline h5 Bump-link--hover" data-ga-click="(Logged out) Header, go to Explore">Explore GitHub <span class="Bump-link-symbol float-right text-normal color-text-tertiary pr-3">&rarr;</span></a></li>
                                                                                                                                                                                                                                                                                                                   ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:273:299: error: expected unqualified-id before '<' token
                       <li class="edge-item-fix"><a href="/topics" class="py-2 lh-condensed-ultra d-block Link--secondary no-underline f5 Bump-link--hover" data-ga-click="(Logged out) Header, go to Topics">Topics <span class="Bump-link-symbol float-right text-normal color-text-tertiary pr-3">&rarr;</span></a></li>
                                                                                                                                                                                                                                                                                                           ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:274:316: error: expected unqualified-id before '<' token
                         <li class="edge-item-fix"><a href="/collections" class="py-2 lh-condensed-ultra d-block Link--secondary no-underline f5 Bump-link--hover" data-ga-click="(Logged out) Header, go to Collections">Collections <span class="Bump-link-symbol float-right text-normal color-text-tertiary pr-3">&rarr;</span></a></li>
                                                                                                                                                                                                                                                                                                                            ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:275:305: error: expected unqualified-id before '<' token
                       <li class="edge-item-fix"><a href="/trending" class="py-2 lh-condensed-ultra d-block Link--secondary no-underline f5 Bump-link--hover" data-ga-click="(Logged out) Header, go to Trending">Trending <span class="Bump-link-symbol float-right text-normal color-text-tertiary pr-3">&rarr;</span></a></li>
                                                                                                                                                                                                                                                                                                                 ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:276:327: error: expected unqualified-id before '<' token
                       <li class="edge-item-fix"><a href="https://lab.github.com/" class="py-2 lh-condensed-ultra d-block Link--secondary no-underline f5 Bump-link--hover" data-ga-click="(Logged out) Header, go to Learning lab">Learning Lab <span class="Bump-link-symbol float-right text-normal color-text-tertiary pr-3">&rarr;</span></a></li>
                                                                                                                                                                                                                                                                                                                                       ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:277:340: error: expected unqualified-id before '<' token
                       <li class="edge-item-fix"><a href="https://opensource.guide" class="py-2 lh-condensed-ultra d-block Link--secondary no-underline f5 Bump-link--hover" data-ga-click="(Logged out) Header, go to Open source guides">Open source guides <span class="Bump-link-symbol float-right text-normal color-text-tertiary pr-3">&rarr;</span></a></li>
                                                                                                                                                                                                                                                                                                                                                    ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:282:279: error: expected unqualified-id before '<' token
                       <li class="edge-item-fix"><a href="https://github.com/readme" class="py-2 lh-condensed-ultra d-block Link--secondary no-underline f5 Bump-link--hover">The ReadME Project <span class="Bump-link-symbol float-right text-normal color-text-tertiary pr-3">&rarr;</span></a></li>
                                                                                                                                                                                                                                                                                       ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:283:317: error: expected unqualified-id before '<' token
                       <li class="edge-item-fix"><a href="https://github.com/events" class="py-2 lh-condensed-ultra d-block Link--secondary no-underline f5 Bump-link--hover" data-ga-click="(Logged out) Header, go to Events">Events <span class="Bump-link-symbol float-right text-normal color-text-tertiary pr-3">&rarr;</span></a></li>
                                                                                                                                                                                                                                                                                                                             ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:284:334: error: expected unqualified-id before '<' token
                       <li class="edge-item-fix"><a href="https://github.community" class="py-2 lh-condensed-ultra d-block Link--secondary no-underline f5 Bump-link--hover" data-ga-click="(Logged out) Header, go to Community forum">Community forum <span class="Bump-link-symbol float-right text-normal color-text-tertiary pr-3">&rarr;</span></a></li>
                                                                                                                                                                                                                                                                                                                                              ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:285:340: error: expected unqualified-id before '<' token
                       <li class="edge-item-fix"><a href="https://education.github.com" class="py-2 lh-condensed-ultra d-block Link--secondary no-underline f5 Bump-link--hover" data-ga-click="(Logged out) Header, go to GitHub Education">GitHub Education <span class="Bump-link-symbol float-right text-normal color-text-tertiary pr-3">&rarr;</span></a></li>
                                                                                                                                                                                                                                                                                                                                                    ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:286:349: error: expected unqualified-id before '<' token
                       <li class="edge-item-fix"><a href="https://stars.github.com" class="py-2 pb-0 lh-condensed-ultra d-block Link--secondary no-underline f5 Bump-link--hover" data-ga-click="(Logged out) Header, go to GitHub Stars Program">GitHub Stars program <span class="Bump-link-symbol float-right text-normal color-text-tertiary pr-3">&rarr;</span></a></li>
                                                                                                                                                                                                                                                                                                                                                             ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:306:270: error: expected unqualified-id before '<' token
                     <a href="/pricing" class="pb-2 lh-condensed-ultra d-block Link--primary no-underline h5 Bump-link--hover" data-ga-click="(Logged out) Header, go to Pricing">Plans <span class="Bump-link-symbol float-right text-normal color-text-tertiary pr-3">&rarr;</span></a>
                                                                                                                                                                                                                                                                              ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:309:333: error: expected unqualified-id before '<' token
                       <li class="edge-item-fix"><a href="/pricing#feature-comparison" class="py-2 lh-condensed-ultra d-block Link--secondary no-underline f5 Bump-link--hover" data-ga-click="(Logged out) Header, go to Compare plans">Compare plans <span class="Bump-link-symbol float-right text-normal color-text-tertiary pr-3">&rarr;</span></a></li>
                                                                                                                                                                                                                                                                                                                                             ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:310:343: error: expected unqualified-id before '<' token
                       <li class="edge-item-fix"><a href="https://enterprise.github.com/contact" class="py-2 lh-condensed-ultra d-block Link--secondary no-underline f5 Bump-link--hover" data-ga-click="(Logged out) Header, go to Contact Sales">Contact Sales <span class="Bump-link-symbol float-right text-normal color-text-tertiary pr-3">&rarr;</span></a></li>
                                                                                                                                                                                                                                                                                                                                                       ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:314:343: error: expected unqualified-id before '<' token
                       <li class="edge-item-fix"><a href="https://education.github.com" class="py-2 pb-0 lh-condensed-ultra d-block no-underline Link--primary no-underline h5 Bump-link--hover"  data-ga-click="(Logged out) Header, go to Education">Education <span class="Bump-link-symbol float-right text-normal color-text-tertiary pr-3">&rarr;</span></a></li>
Mehrere Bibliotheken wurden für "LiquidCrystal_I2C.h" gefunden
                                                                                                                                                                                                                                                                                                                                                       ^
 Benutzt: C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C
 Nicht benutzt: C:\Users\Jaif\Documents\Arduino\libraries\Arduino-LiquidCrystal-I2C-library-master
In file included from C:\Users\Jaif\Documents\Arduino\sketch_aug22d\sketch_aug22d.ino:4:0:
 Nicht benutzt: C:\Program Files (x86)\Arduino\libraries\LiquidCrystal_I2C
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:549:25: error: expected unqualified-id before '<' token
       <div>{{ message }}</div>
                         ^
In file included from C:\Users\Jaif\Documents\Arduino\sketch_aug22d\sketch_aug22d.ino:4:0:
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:903:97: error: expected unqualified-id before '<' token
     <span class="flex-1 css-truncate css-truncate-overflow {{ isFilteringClass }}">{{ refName }}</span>
                                                                                                 ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:943:97: error: expected unqualified-id before '<' token
     <span class="flex-1 css-truncate css-truncate-overflow {{ isFilteringClass }}">{{ refName }}</span>
                                                                                                 ^
In file included from C:\Users\Jaif\Documents\Arduino\sketch_aug22d\sketch_aug22d.ino:4:0:
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:1230:148: error: expected unqualified-id before '<' token
         <td id="LC4" class="blob-code blob-code-inner js-file-line">#<span class="pl-k">include</span> <span class="pl-s"><span class="pl-pds">&lt;</span>inttypes.h<span class="pl-pds">&gt;</span></span></td>
                                                                                                                                                    ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:1230:190: error: expected unqualified-id before '<' token
         <td id="LC4" class="blob-code blob-code-inner js-file-line">#<span class="pl-k">include</span> <span class="pl-s"><span class="pl-pds">&lt;</span>inttypes.h<span class="pl-pds">&gt;</span></span></td>
                                                                                                                                                                                              ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:1234:148: error: expected unqualified-id before '<' token
         <td id="LC5" class="blob-code blob-code-inner js-file-line">#<span class="pl-k">include</span> <span class="pl-s"><span class="pl-pds">&lt;</span>Print.h<span class="pl-pds">&gt;</span></span></td>
                                                                                                                                                    ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:1234:187: error: expected unqualified-id before '<' token
         <td id="LC5" class="blob-code blob-code-inner js-file-line">#<span class="pl-k">include</span> <span class="pl-s"><span class="pl-pds">&lt;</span>Print.h<span class="pl-pds">&gt;</span></span></td>
                                                                                                                                                                                           ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:1887:73: error: expected unqualified-id before '<' token
         <td id="LC163" class="blob-code blob-code-inner js-file-line">};</td>
                                                                         ^
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:1964:39: error: expected unqualified-id before numeric constant
       <li class="mr-3 mr-lg-0">&copy; 2021 GitHub, Inc.</li>
                                       ^~~~
C:\Users\Jaif\Documents\Arduino\sketch_aug22d\sketch_aug22d.ino: In function 'void setup()':
sketch_aug22d:9:1: error: 'lcd' was not declared in this scope
 lcd.init(); //Im Setup wird der LCD gestartet
 ^~~
C:\Users\Jaif\Documents\Arduino\sketch_aug22d\sketch_aug22d.ino: In function 'void loop()':
sketch_aug22d:15:1: error: 'lcd' was not declared in this scope
 lcd.setCursor(0, 0);//Hier wird die Position des ersten Zeichens festgelegt. In diesem Fall bedeutet (0,0) das erste Zeichen in der ersten Zeile.
 ^~~
Bibliothek Wire in Version 1.0 im Ordner: C:\Users\Jaif\AppData\Local\Arduino15\packages\arduino\hardware\avr\1.8.3\libraries\Wire  wird verwendet
Bibliothek LiquidCrystal_I2C im Ordner: C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C (legacy) wird verwendet
exit status 1
'lcd' was not declared in this scope

Ich habe die Bibliothek wie im Tutorial angegeben heruntergeladen, in den enstprecheden Ordner kopiert und später noch einmal wieder entfernt und als ZIP importiert. Alle anderen Liquid Crystal Bilbliotheken sind inzwischen wieder gelöscht.

Warum das ?
Im Tutorial steht doch, wie du es mit dem Bibliotheksverwalter machen kannst. Also viel einfacher.

Manuell in den entsprechenden Ordner heruntergeladen und später dann nocheinmal per ZIP Datei.

Sie erscheint in der Liste unter "Sketch/Bibliotheken einbinden/beigetragene Biliotheken", jedoch nicht unter "Werkzeuge/Bibliotheken verwalten/installiert".

Haben Sie die Bibliothek dreimal installiert?

Nein, geht nicht, die Bibliothek erscheint nicht im Verwalter.
Zumindest nicht unter dem angegeben Namen "LiquidCrystal I2C by Frank de Brabander“

Eigentlich nicht. Ich habe sie im laufe des Tages nun bereits mehrmal gelöscht und neu installiert, aber jede Datei ist im Ordner nur einmal vorhanden.

alle liquid_crystal libs im Explorer löschen.
Dann Arduino IDE neu starten.
Wenn sie wirklich alle Weg sind (Sketch, Include Library!)
über den Bibliothek Manager neu installieren.

Alles gut.
Wer lesen kann ist klar im Vorteil.
Die lib ist richtig eingebunden und wird auch gefunden. Und verwendet.

Dein Problem ist die lib:

In file included from C:\Users\Jaif\Documents\Arduino\sketch_aug22d\sketch_aug22d.ino:4:0:
C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:79:74: error: stray '\302' in program

Ich sitze an einem 10" Display und bin halb blind.
Bitte wenn sich mal jemand damit auseinandersetzen würde? @J-M-L Du bist doch fix dabei :wink:

Ok, hast Recht. Ich kann diebei mir auch nicht sehen.
Dann solltest du besser eine andere Lib verwenden.

error: stray '\ 302' in program

➜ woher kommt diese LiquidCrystal_I2C/LiquidCrystal_I2C.h?

einfach einmal sauber machen:

Aus der fehlermeldung:

C:\Users\Jaif\Documents\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:79:124: error: stray '\302' in program
   <title>Arduino-LiquidCrystal-I2C-library/LiquidCrystal_I2C.h at master · fdebrabander/Arduino-LiquidCrystal-I2C-library · GitHub</title>

Dürfte die sein: