Full White Screen Used to Identify Glitches on BTT TFT35 with SKR Pico

[evelyn-freya]

Hi everyone,

White full screen has been a helpful tool in identifying screen glitches on my BTT TFT35 SPI v2.1 hooked up to a BTT Pi with an SKR Pico as a microcontroller. It allowed me to observe inconsistencies and confirm that glitches occur immediately when metal comes in contact with the screw holes. Whenever this happens, the screen glitches badly and eventually turns completely blank.

As a result, I can not even screw it down on the mount I designed. At the end of the video, I demonstrated the issue using an Allen key to show how severe the glitches are.

Does anyone know what could be causing this behavior and how to fix it?

 

[Delta Prime]

mmediately when metal comes in contact with the screw holes. Whenever this happens, the screen glitches badly and eventually turns completely blank

You are short circuiting the display and or driver.

As a result, I can not even screw it down on the mount I designed

Poor design?
Photos of your mount, please.

At the end of the video, I demonstrated the issue using an Allen key to show how severe the glitches are.

What video?
Teflon washers for the screw holes nonconductice ,standoffs or apply Heat shrink to the screws and or standoffs.

Does anyone know what could be causing this behavior and how to fix it?

An over zealous 3-D printer mount designer? To fix: Print out some high temperature fluoropolymer kapton tape. Apply liberally to exposed conductive mount surface areas.

 

[evelyn-freya]

@Delta Prime ,
Thanks for the advice!
I will try using Teflon washers and Kapton tape as you suggested. The mount might need redesigning to avoid contact with conductive areas. I will also share photos and the video link shortly for better clarity.