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Bodmer / TFT_HX8357

Arduino library for HX8357 TFT display
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strange pixel on the display during running on Atmega2560 #14

Closed mobifu1 closed 6 years ago

mobifu1 commented 6 years ago

you can load my using code for testing: https://github.com/mobifu1/arduino_pa_controller

After 1 minute of running, the software produce many strange colored pixel. The pixel position on the display looks like a random process. maybe you can reproduce the error. regards Mobifu1

Bodmer commented 6 years ago

I suspect you are using the HX8357B controller. This version of the controller appears to have a silicon level bug in the controller that generates spurious pixels. I expect that is why there is a HX8357C controller as that one does not exhibit the same problem.

Unfortunately there is nothing I can do to fix this (I have spent a long time investigating this!) except suggest that the complete screen is redrawn occasionally to wipe out the odd pixels.

mobifu1 commented 6 years ago

Hello Bodmer, thank you for the information and your work, yes the board was cheap, thats the problem :-) regards from Hamburg Mobifu1

aajahnke@aol.com

Bodmer commented 6 years ago

The 3" HX8357C based display is also cheap for it's size and works really well. I will update the ReadMe to notify users of this issue. Thanks.