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[Reply #15 on:]

Refer to reply #9, your answer is at the bottom.

[Reply #16 on:]

The error I receive now is to declare keypad into

Copy the errors, paste them here.

"is to declare keypad into" doesn't make sense.

[Reply #17 on:]

The error I receive now is to declare keypad into

Copy the errors, paste them here.

"is to declare keypad into" doesn't make sense.

The errors I get:
schetch_feb07a.ino: In function 'void loop()':
                       42: error: 'keypad was not declared in this scope
                       44: error: 'No_Key' was not declared in this scope

Just a few errors compared to the errors I got before.
Many thanks

[Reply #18 on:]

You have declared and instance of Keypad and called it customKeypad

Code:

  Keypad customKeypad = Keypad( makeKeymap (keys), rowPins, colPins,
  Rows, Cols );

Later on you refer to it as keypad

Code:

   char key = keypad.getKey();

Change the second one to

Code:

   char key = customKeypad.getKey();

[Reply #19 on:]

44: error: 'No_Key' was not declared in this scope

And it wasn't in the example I told you to look at, either. I've already told you what to do about this. Start listening.

[Reply #20 on:]

C is case-sensitive, if that helps.

DOG, Dog, dog. All different.

[Reply #21 on:]

Hi guys,
I want to thank you all for helping me.
This is my modified code and now it's working.
Wish you all the best.
Regards

Code:

// 8/8 keypad to print characters
// on computer display

#include <Keypad.h>

int R0=9;
int R1=8;
int R2=7;
int R3=6;
int R4=5;
int R5=4;
int R6=3;
int R7=2;

const byte Rows = 8; // 8 rows
const byte Cols = 8; // 8 columns
char keys [Rows] [Cols] ={
 
  {'a','b','c','d','e','f','g','h'},
  {'i','j','k','l','m','n','o','p'},
  {'q','r','s','t','u','v','w','x'},
  {'y','z','A','B','C','D','E','F'},
  {'G','H','I','J','K','L','M','N'},
  {'O','P','Q','R','S','T','U','V'},
  {'W','X','Y','Z','1','2','3','4'},
  {'5','6','7','8','9','0','.',','},
};

  byte rowPins [Rows] = {R0, R1, R2, R3, R4, R5, R6, R7};
  // connect to row pinouts of the keypad
  byte colPins [Cols] = {A0, A1, A2, A3, A4, A5, A6, A7};
  // connect to column pinouts of keypad
 
  Keypad customKeypad = Keypad( makeKeymap (keys), rowPins, colPins,
  Rows, Cols );
 
  void setup()
  {
    Serial.begin (9600);
  }
  void loop() {
    char customKey = customKeypad.getKey();
   
    if (customKey){
      Serial.println(customKey);
    }
  }
 

[Reply #22 on:]

Well done.

What other plans do you have for the keypad ?

[Reply #23 on:]

Well done.

What other plans do you have for the keypad ?

I want to connect a GLCD to my project and to insert a custom
character for each button. As I can see, I have a lot of programming
for doing this. It looks very scary because I don't have too
much experience.
Perhaps some short indications would be helpful.

[Reply #24 on:]

switch (customKey){
case 'a':
:
:
break;
case 'b':
:
:
break;
// etc.
}

[Reply #25 on:]

Thank you very much.
I will try to do it when I can find some time.
Regards