Grove-LCD RGB Backlight with Arduino MEGA 2560

Other Hardware Displays
1

Hi everyone,

I want to display 'Hello World' using the program under LiquidCrystal. After connecting the respective pins from Grove to Arduino, it doesnt display 'Hello World'.It shows 16 empty inputs on the front row only.

Any solutions?

2

This should be simple considering that you have the wire libraries which you could use. You will find the Vcc and Gnd pins which are available on the 2560. There is also the other SDA and SCL pin which you can use to connect the LCD with just four leads in all. Use the libraries and you should be good to go.

3

You are more likely to receive help with your problem if you provide us with more information. Examples:

  • A link to information about your hardware.
  • A copy of the program that your are using.
  • A photograph of your setup that allows us to unambiguously follow each wire from one end to the other.
    In general if you are seeing one row of blocks it means that your power is connected properly, the contrast adjustment is satisfactory, and your LCD is probably functional.

The fact that you are not seeing the text that you are expecting could be due to wiring or programming errors - we really can't tell which without more information.

Don