here is the code and error below:
/* @file CustomKeypad.pde
|| @version 1.0
|| @author Alexander Brevig
|| @contact alexanderbrevig@gmail.com
||
|| @description
|| | Demonstrates changing the keypad size and key values.
|| #
/
#include <Keypad.h>
int led = 13;
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);
}
C:\Users\Cheeto\Desktop\Elegoo The Most Complete Starter Kit for MEGA V1.0.17.07.10\English\code\Lesson 11 Membrane Switch Module\custom_keypad\custom_keypad.ino:13:20: fatal error: Keypad.h: No such file or directory
#include <Keypad.h>
^
compilation terminated.
exit status 1
Error compiling for board Arduino/Genuino Mega or Mega 2560.