Fatal error: no such file or directory

Projects Programming
1

So I am using an arduino mega 2560 and i have a example code:
#include Keypad.h

const byte ROWS = 4; //four rows
const byte COLS = 4; //four columns
//define the cymbols on the buttons of the keypads

char hexaKeys[ROWS][COLS] = {
{'1','2','3','A'},
{'4','5','6','B'},
{'7','8','9','C'},
{'*','0','#','D'},
};
byte rowPins[ROWS] = {9, 8, 7, 6}; //connect to the row pinouts of the keypad
byte colPins[COLS] = {5, 4, 3, 2}; //connect to the column pinouts of the keypad

//initialize an instance of class NewKeypad
Keypad customKeypad = Keypad( makeKeymap(hexaKeys), rowPins, colPins, ROWS, COLS);

void setup(){
Serial.begin(9600);
}

void loop(){
char customKey = customKeypad.getKey();

if (customKey){
Serial.println(customKey);
}
}
and for some reason, it gives me a error upon compileation:

C:\Users\kjj\AppData\Local\Temp\arduino_build_196325\sketch\Key.cpp:30:17: fatal error: Key.h: No such file or directory

#include <Key.h>

^

compilation terminated.

exit status 1
Error compiling for board Arduino/Genuino Mega or Mega 2560.
'As you can see, I'm not even including the #include <key.h> command! I have tried everything and it won't work. Please help me

2

looks like you need to install some libraries

aren't you missing some <> or "" ?
#include Keypad.h

Please correct your post above and add code tags around your code:
[code]`` [color=blue]// your code is here[/color] ``[/code].

It should look like this:// your code is here
(Also press ctrl-T (PC) or cmd-T (Mac) in the IDE before copying to indent your code properly)

3

Key.h is included in Keypad.h

Make sure your library is installed properly and Keypad.h, Keypad.cpp, Key.h and Key.cpp are all in the Keypad directory.

4

J-M-L:
looks like you need to install some libraries

aren't you missing some <> or "" ?
#include Keypad.h
Yeah, I tried both and they don't work.=(

Please correct your post above and add code tags around your code:
[code]`` [color=blue]// your code is here[/color] ``[/code].

It should look like this:// your code is here
(Also press ctrl-T (PC) or cmd-T (Mac) in the IDE before copying to indent your code properly)

ok

5

It looks like you have the Keypad library files in the same folder as the example sketch. Is that correct?

6

Yes, and although ive triple checked, any way won't work. I did servo and it worked. WHY

7

When the file is in the sketch folder you need to use the #include "Key.h" syntax, not #include <Key.h>. The former searches the local folder first, then the standard libraries folders. The latter only searches the libraries folders.

The reason #include <Servo.h> works with the Servo library is because the Servo library is installed in the libraries folders.

8

Oh, It worked! Thanks for all your help! =)