beef279 Posted January 7, 2017 Posted January 7, 2017 I've got an issue with a stm32f4 discovery board. It was working fine until I want to upgrade to pin2dmd 2.36 version. The display's pixels began to change color and after few second all the bottom part of the displays become blue. I try to change the displays, the shield but the issue is really on the stm32. I try to upgrade the firmware of stm32, come back to pin2dmd 2.33 version to but nothing is working. Doe's anyone got an idea ? 20170107_161841.mp4
Content Provider lucky1 Posted January 8, 2017 Content Provider Posted January 8, 2017 Check the cableing between panel and shield . Maybe swap panels left to right .
beef279 Posted January 9, 2017 Author Posted January 9, 2017 I've got several panels I swap the stm32 board from one to others. Everytime it is the same problem so I think that this board is unserviceable, bad luck
OzStick Posted January 10, 2017 Posted January 10, 2017 I had a similar issue a coule of weeks ago where i was getting random "stuck" pixels that were illuminating in red. My initial though was that it was the panels, but I swapped them for another pair and it did the same thing. I then swapped the shield board - still the same thing. I then swapped to a different Discovery board and the problem was gone.
beef279 Posted January 10, 2017 Author Posted January 10, 2017 Finaly your stm32 card was dead or you can save it ?
Content Provider lucky1 Posted January 11, 2017 Content Provider Posted January 11, 2017 Your problem seems to be the connection of pin B2 of the Hub75 port Please check the wiring to D5 of the STM..
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