search

rm-hull / luma.lcd

Python module to drive PCD8544, HT1621, ST7735, ST7567 and UC1701X-based LCDs
https://luma-lcd.readthedocs.io
MIT License
156 stars 56 forks source link

ST7735 White Screen #93

Closed LouisPi closed 4 years ago

LouisPi commented 4 years ago

Any ideas what could be causing this? It was working when I last used it a few months ago.

thijstriemstra commented 4 years ago

can you include more info: os, python, example script etc?

LouisPi commented 4 years ago

I'm using Raspian (Stretch I think). I've tried the Luma example scripts using the config for my LCD, as well as the script for my project. I've checked pins and wires (replaced all wires) and it turned out there was a problem with my audio board and the LCD sharing the pin the LCD uses for the backlight but after fixing this, the screen was still white. The audio board wasn't actually in use, and I believe the backlight has worked throughout (hence the white screen) so I don't think this has anything to do with the issue.

I can't see what software could be at fault, considering my LCD worked before. Maybe it's worth trying the LCD on a different pi.

Thanks, Louis

thijstriemstra commented 4 years ago

Looks like a duplicate of #82. Can you give the suggested changes there a try @LouisPi

Marking as duplicate.