Hi Stefan, I have attempted to load the sketch below from the one you recommended, but I keep getting an error message which say' there is no directory, new to me, I have downloaded Libraries, but directories?`Arduino: 1.8.13 (Mac OS X), Board: "LOLIN(WEMOS) D1 R2 & mini, 80 MHz, Flash, Disabled (new aborts on oom), Disabled, All SSL ciphers (most compatible), 32KB cache + 32KB IRAM (balanced), Use pgm_read macros for IRAM/PROGMEM, 4MB (FS:2MB OTA:~1019KB), v2 Lower Memory, Disabled, None, Only Sketch, 921600"
/Applications/Arduino.app/Contents/Java/arduino-builder -dump-prefs -logger=machine -hardware /Applications/Arduino.app/Contents/Java/hardware -hardware /Users/User/Library/Arduino15/packages -tools /Applications/Arduino.app/Contents/Java/tools-builder -tools /Applications/Arduino.app/Contents/Java/hardware/tools/avr -tools /Users/User/Library/Arduino15/packages -built-in-libraries /Applications/Arduino.app/Contents/Java/libraries -libraries /Users/User/Documents/Arduino/libraries -fqbn=esp8266:esp8266:d1_mini:xtal=80,vt=flash,exception=disabled,stacksmash=disabled,ssl=all,mmu=3232,non32xfer=fast,eesz=4M2M,ip=lm2f,dbg=Disabled,lvl=None____,wipe=none,baud=921600 -vid-pid=0000_0000 -ide-version=10813 -build-path /var/folders/5f/04cvxqyn7gbgj88lgyctqdcw0000gp/T/arduino_build_621895 -warnings=none -build-cache /var/folders/5f/04cvxqyn7gbgj88lgyctqdcw0000gp/T/arduino_cache_784592 -prefs=build.warn_data_percentage=75 -prefs=runtime.tools.mklittlefs.path=/Users/User/Library/Arduino15/packages/esp8266/tools/mklittlefs/3.0.3-gcc10.3-9bcba0b -prefs=runtime.tools.mklittlefs-3.0.3-gcc10.3-9bcba0b.path=/Users/User/Library/Arduino15/packages/esp8266/tools/mklittlefs/3.0.3-gcc10.3-9bcba0b -prefs=runtime.tools.xtensa-lx106-elf-gcc.path=/Users/User/Library/Arduino15/packages/esp8266/tools/xtensa-lx106-elf-gcc/3.0.3-gcc10.3-9bcba0b -prefs=runtime.tools.xtensa-lx106-elf-gcc-3.0.3-gcc10.3-9bcba0b.path=/Users/User/Library/Arduino15/packages/esp8266/tools/xtensa-lx106-elf-gcc/3.0.3-gcc10.3-9bcba0b -prefs=runtime.tools.mkspiffs.path=/Users/User/Library/Arduino15/packages/esp8266/tools/mkspiffs/3.0.3-gcc10.3-9bcba0b -prefs=runtime.tools.mkspiffs-3.0.3-gcc10.3-9bcba0b.path=/Users/User/Library/Arduino15/packages/esp8266/tools/mkspiffs/3.0.3-gcc10.3-9bcba0b -prefs=runtime.tools.python3.path=/Users/User/Library/Arduino15/packages/esp8266/tools/python3/3.7.2-post1 -prefs=runtime.tools.python3-3.7.2-post1.path=/Users/User/Library/Arduino15/packages/esp8266/tools/python3/3.7.2-post1 -verbose /Users/User/Documents/Arduino/sketch_jul22b/sketch_jul22b.ino
/Applications/Arduino.app/Contents/Java/arduino-builder -compile -logger=machine -hardware /Applications/Arduino.app/Contents/Java/hardware -hardware /Users/User/Library/Arduino15/packages -tools /Applications/Arduino.app/Contents/Java/tools-builder -tools /Applications/Arduino.app/Contents/Java/hardware/tools/avr -tools /Users/User/Library/Arduino15/packages -built-in-libraries /Applications/Arduino.app/Contents/Java/libraries -libraries /Users/User/Documents/Arduino/libraries -fqbn=esp8266:esp8266:d1_mini:xtal=80,vt=flash,exception=disabled,stacksmash=disabled,ssl=all,mmu=3232,non32xfer=fast,eesz=4M2M,ip=lm2f,dbg=Disabled,lvl=None____,wipe=none,baud=921600 -vid-pid=0000_0000 -ide-version=10813 -build-path /var/folders/5f/04cvxqyn7gbgj88lgyctqdcw0000gp/T/arduino_build_621895 -warnings=none -build-cache /var/folders/5f/04cvxqyn7gbgj88lgyctqdcw0000gp/T/arduino_cache_784592 -prefs=build.warn_data_percentage=75 -prefs=runtime.tools.mklittlefs.path=/Users/User/Library/Arduino15/packages/esp8266/tools/mklittlefs/3.0.3-gcc10.3-9bcba0b -prefs=runtime.tools.mklittlefs-3.0.3-gcc10.3-9bcba0b.path=/Users/User/Library/Arduino15/packages/esp8266/tools/mklittlefs/3.0.3-gcc10.3-9bcba0b -prefs=runtime.tools.xtensa-lx106-elf-gcc.path=/Users/User/Library/Arduino15/packages/esp8266/tools/xtensa-lx106-elf-gcc/3.0.3-gcc10.3-9bcba0b -prefs=runtime.tools.xtensa-lx106-elf-gcc-3.0.3-gcc10.3-9bcba0b.path=/Users/User/Library/Arduino15/packages/esp8266/tools/xtensa-lx106-elf-gcc/3.0.3-gcc10.3-9bcba0b -prefs=runtime.tools.mkspiffs.path=/Users/User/Library/Arduino15/packages/esp8266/tools/mkspiffs/3.0.3-gcc10.3-9bcba0b -prefs=runtime.tools.mkspiffs-3.0.3-gcc10.3-9bcba0b.path=/Users/User/Library/Arduino15/packages/esp8266/tools/mkspiffs/3.0.3-gcc10.3-9bcba0b -prefs=runtime.tools.python3.path=/Users/User/Library/Arduino15/packages/esp8266/tools/python3/3.7.2-post1 -prefs=runtime.tools.python3-3.7.2-post1.path=/Users/User/Library/Arduino15/packages/esp8266/tools/python3/3.7.2-post1 -verbose /Users/User/Documents/Arduino/sketch_jul22b/sketch_jul22b.ino
Using board 'd1_mini' from platform in folder: /Users/User/Library/Arduino15/packages/esp8266/hardware/esp8266/3.0.1
Using core 'esp8266' from platform in folder: /Users/User/Library/Arduino15/packages/esp8266/hardware/esp8266/3.0.1
Detecting libraries used...
/Users/User/Library/Arduino15/packages/esp8266/tools/xtensa-lx106-elf-gcc/3.0.3-gcc10.3-9bcba0b/bin/xtensa-lx106-elf-g++ -D__ets__ -DICACHE_FLASH -U__STRICT_ANSI__ -D_GNU_SOURCE -I/Users/User/Library/Arduino15/packages/esp8266/hardware/esp8266/3.0.1/tools/sdk/include -I/Users/User/Library/Arduino15/packages/esp8266/hardware/esp8266/3.0.1/tools/sdk/lwip2/include -I/Users/User/Library/Arduino15/packages/esp8266/hardware/esp8266/3.0.1/tools/sdk/libc/xtensa-lx106-elf/include -I/var/folders/5f/04cvxqyn7gbgj88lgyctqdcw0000gp/T/arduino_build_621895/core -c -w -Werror=return-type -Os -g -free -fipa-pta -mlongcalls -mtext-section-literals -fno-rtti -falign-functions=4 -std=gnu++17 -ffunction-sections -fdata-sections -fno-exceptions -DMMU_IRAM_SIZE=0x8000 -DMMU_ICACHE_SIZE=0x8000 -w -x c++ -E -CC -DNONOSDK22x_190703=1 -DF_CPU=80000000L -DLWIP_OPEN_SRC -DTCP_MSS=536 -DLWIP_FEATURES=1 -DLWIP_IPV6=0 -DARDUINO=10813 -DARDUINO_ESP8266_WEMOS_D1MINI -DARDUINO_ARCH_ESP8266 "-DARDUINO_BOARD="ESP8266_WEMOS_D1MINI"" -DFLASHMODE_DIO -DESP8266 -I/Users/User/Library/Arduino15/packages/esp8266/hardware/esp8266/3.0.1/cores/esp8266 -I/Users/User/Library/Arduino15/packages/esp8266/hardware/esp8266/3.0.1/variants/d1_mini /var/folders/5f/04cvxqyn7gbgj88lgyctqdcw0000gp/T/arduino_build_621895/sketch/sketch_jul22b.ino.cpp -o /dev/null -DARDUINO_LIB_DISCOVERY_PHASE
Alternatives for ESP8266WiFi.h: [ESP8266WiFi@1.0]
ResolveLibrary(ESP8266WiFi.h)
-> candidates: [ESP8266WiFi@1.0]
/Users/User/Library/Arduino15/packages/esp8266/tools/xtensa-lx106-elf-gcc/3.0.3-gcc10.3-9bcba0b/bin/xtensa-lx106-elf-g++ -D__ets__ -DICACHE_FLASH -U__STRICT_ANSI__ -D_GNU_SOURCE -I/Users/User/Library/Arduino15/packages/esp8266/hardware/esp8266/3.0.1/tools/sdk/include -I/Users/User/Library/Arduino15/packages/esp8266/hardware/esp8266/3.0.1/tools/sdk/lwip2/include -I/Users/User/Library/Arduino15/packages/esp8266/hardware/esp8266/3.0.1/tools/sdk/libc/xtensa-lx106-elf/include -I/var/folders/5f/04cvxqyn7gbgj88lgyctqdcw0000gp/T/arduino_build_621895/core -c -w -Werror=return-type -Os -g -free -fipa-pta -mlongcalls -mtext-section-literals -fno-rtti -falign-functions=4 -std=gnu++17 -ffunction-sections -fdata-sections -fno-exceptions -DMMU_IRAM_SIZE=0x8000 -DMMU_ICACHE_SIZE=0x8000 -w -x c++ -E -CC -DNONOSDK22x_190703=1 -DF_CPU=80000000L -DLWIP_OPEN_SRC -DTCP_MSS=536 -DLWIP_FEATURES=1 -DLWIP_IPV6=0 -DARDUINO=10813 -DARDUINO_ESP8266_WEMOS_D1MINI -DARDUINO_ARCH_ESP8266 "-DARDUINO_BOARD="ESP8266_WEMOS_D1MINI"" -DFLASHMODE_DIO -DESP8266 -I/Users/User/Library/Arduino15/packages/esp8266/hardware/esp8266/3.0.1/cores/esp8266 -I/Users/User/Library/Arduino15/packages/esp8266/hardware/esp8266/3.0.1/variants/d1_mini -I/Users/User/Library/Arduino15/packages/esp8266/hardware/esp8266/3.0.1/libraries/ESP8266WiFi/src /var/folders/5f/04cvxqyn7gbgj88lgyctqdcw0000gp/T/arduino_build_621895/sketch/sketch_jul22b.ino.cpp -o /dev/null -DARDUINO_LIB_DISCOVERY_PHASE
Alternatives for Wire.h: [Wire@1.0]
ResolveLibrary(Wire.h)
-> candidates: [Wire@1.0]
/Users/User/Library/Arduino15/packages/esp8266/tools/xtensa-lx106-elf-gcc/3.0.3-gcc10.3-9bcba0b/bin/xtensa-lx106-elf-g++ -D__ets__ -DICACHE_FLASH -U__STRICT_ANSI__ -D_GNU_SOURCE -I/Users/User/Library/Arduino15/packages/esp8266/hardware/esp8266/3.0.1/tools/sdk/include -I/Users/User/Library/Arduino15/packages/esp8266/hardware/esp8266/3.0.1/tools/sdk/lwip2/include -I/Users/User/Library/Arduino15/packages/esp8266/hardware/esp8266/3.0.1/tools/sdk/libc/xtensa-lx106-elf/include -I/var/folders/5f/04cvxqyn7gbgj88lgyctqdcw0000gp/T/arduino_build_621895/core -c -w -Werror=return-type -Os -g -free -fipa-pta -mlongcalls -mtext-section-literals -fno-rtti -falign-functions=4 -std=gnu++17 -ffunction-sections -fdata-sections -fno-exceptions -DMMU_IRAM_SIZE=0x8000 -DMMU_ICACHE_SIZE=0x8000 -w -x c++ -E -CC -DNONOSDK22x_190703=1 -DF_CPU=80000000L -DLWIP_OPEN_SRC -DTCP_MSS=536 -DLWIP_FEATURES=1 -DLWIP_IPV6=0 -DARDUINO=10813 -DARDUINO_ESP8266_WEMOS_D1MINI -DARDUINO_ARCH_ESP8266 "-DARDUINO_BOARD="ESP8266_WEMOS_D1MINI"" -DFLASHMODE_DIO -DESP8266 -I/Users/User/Library/Arduino15/packages/esp8266/hardware/esp8266/3.0.1/cores/esp8266 -I/Users/User/Library/Arduino15/packages/esp8266/hardware/esp8266/3.0.1/variants/d1_mini -I/Users/User/Library/Arduino15/packages/esp8266/hardware/esp8266/3.0.1/libraries/ESP8266WiFi/src -I/Users/User/Library/Arduino15/packages/esp8266/hardware/esp8266/3.0.1/libraries/Wire /var/folders/5f/04cvxqyn7gbgj88lgyctqdcw0000gp/T/arduino_build_621895/sketch/sketch_jul22b.ino.cpp -o /dev/null -DARDUINO_LIB_DISCOVERY_PHASE
Alternatives for system_variables.h: []
ResolveLibrary(system_variables.h)
-> candidates: []
sketch_jul22b:9:10: fatal error: system_variables.h: No such file or directory
9 | #include "system_variables.h"
| ^~~~~~~~~~~~~~~~~~~~
compilation terminated.
Using library ESP8266WiFi at version 1.0 in folder: /Users/User/Library/Arduino15/packages/esp8266/hardware/esp8266/3.0.1/libraries/ESP8266WiFi
Using library Wire at version 1.0 in folder: /Users/User/Library/Arduino15/packages/esp8266/hardware/esp8266/3.0.1/libraries/Wire
exit status 1
system_variables.h: No such file or directory
Invalid library found in /Users/User/Documents/Arduino/libraries/AM2320-1.1.3: no headers files (.h) found in /Users/User/Documents/Arduino/libraries/AM2320-1.1.3
`