I would like to request a custom modification for the library to work for my project. I tried to do it myself but I’m not too familiar with the advanced DMA programming. I was wondering if a member of this awesome community is willing to help me out. If the modification works, I’m willing to transfer $100 to your PayPal or bank account.
I have 4 x P2 128x64 1/32 scan LED screens connected in daisy chain setup, so that’s a total of 512x64 LEDs. I know due to limitations of the Teensy and ESP32 this will be impossible to run properly. Is there any other way this can be done though?
I am OK with reducing the colors in order to save memory buffer. Furthermore, I’m also OK with a low refresh rate. This screen will NOT play video animations. I just want to display bitmap images stored on the SD card.
Summary of the modifications:
*) Support for 512x64 (4 x 128x64 32Scan LED Screens) for teensy 3.5/3.6 or ESP32. I’m OK if that means reducing the colors to even single color (Red or Green or Blue).
*) Keeping support for everything else, like DMA, and most importantly controlling brightness.
*) Reading images from SD card
Please let me know if you’re willing to take this task by replying here.
Note: I was able to control the 4 LED screens using Particle Photon microcontroller without DMA or controlling brightness, however, the CPU was very busy, I want to use DMA to keep the CPU free for other tasks. Here’s a picture of my attempt:
512x64 Single Color Green, however, I was unable to control the brightness