SerLCD Display blanking out after initialed

Qwiic System
1

The SerLCd 20x4 LCD display does not display and characters after

//Set backlight to bright white

lcd.setBacklight(255, 255, 255);

//Set contrast. Lower to 0 for higher contrast.

lcd.setContrast(5);

// clear the SerLCD and set the cursor position to 0,0

lcd.clear();

This code is executed none of the lcd.print will display on the screen.

I have tried multiple display with the same result.

Wrote the Hello World example and it works.

Any suggestion on what to ty next.

2

Share the entire code being used please

3

Hey @jmcleanjr2021, I just ran into the same problem when mine arrived. I found that the SerLCD doesn’t capture the i2c commands that my MCU immediately sends out after resetting, and this likely includes your first display instruction. Try waiting 500-1000ms after your MCU resets (example: delay(1000)) and then writing some text to the SerLCD––worked for me!