"No Such File or Directory"

Using Arduino Programming Questions
#1

Hi guys - I know a few old topics exist on this, and I've read through them. But in the interest of not necroing threads 3-5 years old I thought I'd make a quick new one.

I used to arduino/texas instruments/PIC a lot but I'm rusty. I'm writing a simple arduino code (mycode.ino) and I thought I'd move some defines and stuff into a separate header file. I opened a text window, named it mycode.h, and saved it IN the directory right next to my mycode.ino file. At the top of my program I included

#include "mycode.h"

However, I get the error "no such file or directory" when I try to compile. I'm not sure what I'm doing wrong. The file is definitely in the same folder as my .ino file. I have the filename right. It just isn't finding it. What am I doing wrong?

Arduino: 1.8.7 (Windows 10), Board: "Arduino/Genuino Mega or Mega 2560, ATmega2560 (Mega 2560)"

C:\Program Files (x86)\Arduino\arduino-builder -dump-prefs -logger=machine -hardware C:\Program Files (x86)\Arduino\hardware -tools C:\Program Files (x86)\Arduino\tools-builder -tools C:\Program Files (x86)\Arduino\hardware\tools\avr -built-in-libraries C:\Program Files (x86)\Arduino\libraries -libraries C:\Users\phill\OneDrive\Documents\Arduino\libraries -fqbn=arduino:avr:mega:cpu=atmega2560 -ide-version=10807 -build-path C:\Users\phill\AppData\Local\Temp\arduino_build_12179 -warnings=none -build-cache C:\Users\phill\AppData\Local\Temp\arduino_cache_412029 -prefs=build.warn_data_percentage=75 -prefs=runtime.tools.arduinoOTA.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.arduinoOTA-1.2.1.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.avrdude.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.avrdude-6.3.0-arduino14.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.avr-gcc.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.avr-gcc-5.4.0-atmel3.6.1-arduino2.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -verbose C:\Users\phill\OneDrive\Documents\Arduino\gantry_em\gantry_em.ino
C:\Program Files (x86)\Arduino\arduino-builder -compile -logger=machine -hardware C:\Program Files (x86)\Arduino\hardware -tools C:\Program Files (x86)\Arduino\tools-builder -tools C:\Program Files (x86)\Arduino\hardware\tools\avr -built-in-libraries C:\Program Files (x86)\Arduino\libraries -libraries C:\Users\phill\OneDrive\Documents\Arduino\libraries -fqbn=arduino:avr:mega:cpu=atmega2560 -ide-version=10807 -build-path C:\Users\phill\AppData\Local\Temp\arduino_build_12179 -warnings=none -build-cache C:\Users\phill\AppData\Local\Temp\arduino_cache_412029 -prefs=build.warn_data_percentage=75 -prefs=runtime.tools.arduinoOTA.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.arduinoOTA-1.2.1.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.avrdude.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.avrdude-6.3.0-arduino14.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.avr-gcc.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.avr-gcc-5.4.0-atmel3.6.1-arduino2.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -verbose C:\Users\phill\OneDrive\Documents\Arduino\gantry_em\gantry_em.ino
Using board 'mega' from platform in folder: C:\Program Files (x86)\Arduino\hardware\arduino\avr
Using core 'arduino' from platform in folder: C:\Program Files (x86)\Arduino\hardware\arduino\avr
Detecting libraries used...
"C:\\Program Files (x86)\\Arduino\\hardware\\tools\\avr/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=atmega2560 -DF_CPU=16000000L -DARDUINO=10807 -DARDUINO_AVR_MEGA2560 -DARDUINO_ARCH_AVR "-IC:\\Program Files (x86)\\Arduino\\hardware\\arduino\\avr\\cores\\arduino" "-IC:\\Program Files (x86)\\Arduino\\hardware\\arduino\\avr\\variants\\mega" "C:\\Users\\phill\\AppData\\Local\\Temp\\arduino_build_12179\\sketch\\gantry_em.ino.cpp" -o nul
gantry_em:3:23: error: gantry_em.h: No such file or directory

compilation terminated.

exit status 1
gantry_em.h: No such file or directory
#2

You are missing the file "gantry_em.h". Show the contents of your "mycode.h".

#3

There are two ways to include a file:

#include "some.h"

and

#include <some.h>

The difference is in the search path for the file. I never remember which to use when. When I’m sure the file exists where I expect it to be, but the compiler can’t find it, I simply try the other format.

Did you drink Microsoft’s KoolAid, and leave the absolutely stupid “Hide file extensions” check box checked?

#4

As, stupid problem! I was digging at my .h file and realized that my computer was hiding the .txt file ending it was actually appending. When I turned on "show file extensions" I was able to remove that so it was actually solely "mycode.h" and not "mycode.h.txt" and now it works. Thanks! Mods feel free to delete.

#5

Mods feel free to delete.

This will be left here, so others having the same problem will stop drinking the KoolAid.

#6