ILI9488 drivers: MM2 and MM+


Author Message
damos
Regular Member

Joined: 15/04/2016
Location: Australia
Posts: 68
Posted: 11:00pm 19 Mar 2021      

I recently renewed my SC subscription and thought I would also get some Micromite backpack v3 PCBs and a 3.5" LCD panel.

I assembled everything and the console worked perfectly, but when I plugged in the panel, the backlight came on but the console was frozen. When I removed the panel the console worked and said the driver was loaded.

Given Peter's comments I checked the PCB wiring and noticed that pin 9 on the LCD panel isn't even connected. I tried a 2.8" panel and it worked perfectly.

So I used extenders to connect just pins 1-8. The LCD worked perfectly. I then added extenders one by one expecting it to eventually no longer start. Eventually I had all the wires connected and the LCD and touch both worked perfectly. I removed the extenders and plugged the panel straight into the backpack. It is clear the the backlight is working as the panel is initializing when the screen clears, but the console doesn't work.

It is pretty weird, as it almost as if the extra resistance of the extenders is allowing it to work. I put it away as I am happy to use it with extenders if required, but I will appreciate it if anyone has any ideas.