How to turn off LCD?

[nugoo1]

The problem is my LCD remain on even after the raspberry pi turns off. As long as the main power is connected to the LCD, it shows the previous messages it was showing before and the back-light also remains on, which is not ideal.

I would like to clear the screen and turn off the back-light when the raspberry pi turns off.

Any solution?

[fivdi]

The problem is my LCD remain on even after the raspberry pi turns off. As long as the main power is connected to the LCD, it shows the previous messages it was showing before and the back-light also remains on, which is not ideal.

This isn't an lcd module issue. Calling sudo shutdown -h now shuts down the Raspberry Pi but it doesn't remove power from the power rails. This means that the LCD remains powered and continues to display the information that it was displaying. I'm not aware of a software solution that will remove power from the power rails.

I would like to clear the screen and turn off the back-light when the raspberry pi turns off.

To clear the screen I would suggest calling the LCD clear method before the program terminates. I'm not aware of it being possible to turn off the back-light on a HD44780 LCD with software.

[fivdi]

I'm going to go ahead and close this issue as it doesn't result in modifications to the lcd module being needed.

[nugoo1]

Hi fivdi, thanks again.