Lcd(20*4) keypad shield

[ashu9314]

Hello All,

I am facing problem with my Lcd keypad shield. It is working fine with Arduino Nano, Mega and Uno. But, whenever i am connecting it with controllino maxi, i am not getting any output. i can see that my Analog pin (A0) led is blinking whenever i press any key.

That’s the basic circuit i am using.

https://create.arduino.cc/projecthub/greatbim/lcd-keypad-shield-c87403

i hope somebody can help me out in this regards.

Thanks in Advance.

Greetings
Ashish

[Kudz]

Hello Ashish

If you are using I2C try using this library:

https://community.controllino.com/forums/discussion/lcd204-keypad-shield/

The code is below code below:

#include <Wire.h>

#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27, 2, 1, 0, 4, 5, 6, 7, 3, POSITIVE); // Set the LCD I2C address

void setup()

{

lcd.begin(20,4);

lcd.setCursor(3,0);

lcd.print(“Hello YouTube!”);

lcd.setCursor(8,1);

lcd.print(“****”);

lcd.setCursor(0,2);

lcd.print(“This is a demo text”);

lcd.setCursor(8,3);

lcd.print(“****”);

}

void loop()

{

}

Lcd(20*4) keypad shield

[ashu9314]

Hello Kudz,

Thank you so much for your response.

Unfortunately, the link you shared with me its not working.

[ashu9314]

I found its Solution.

#include <Wire.h>

#include <LCD.h> /*Positive was not define in my L2C library*/

#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27, 2, 1, 0, 4, 5, 6, 7, 3, POSITIVE); // Set the LCD I2C address

void setup()

{

lcd.begin(20,4);

lcd.setCursor(3,0);

lcd.print(“Hello YouTube!”);

lcd.setCursor(8,1);

lcd.print(“****”);

lcd.setCursor(0,2);

lcd.print(“This is a demo text”);

lcd.setCursor(8,3);

lcd.print(“****”);

}

void loop()

{

}

[Lukas]

Hello Ashish,

is the display working fine now?

And what about the buttons? I assume that you connected them to A0 pin at X1 pinheader, right?

Thanks,

Lukas

[ashu9314]

Hello Lukas,

Yes, my display is working fine.

However, i still have some problem with my keypad. I am getting response with delay.

Yes, i have connected it to A0 in X1

Thanks

Ashish

[ashu9314]

Hello Lukas,

Finally i figured it out my mistake with Keypad. i was thinking that it can initialize with same value (Analog A0) as in Arduino. But i need to change it and now its working fine.

Thanks

Ashish

[Lukas]

Great! Good job!

Lukas