Using SmartMatrix and Wifi on ESP32: choose your esp32-arduino version carefully

[Louis]

@marcmerlin

Is there a reason why you didn’t consider an FPGA

Teensy 4.0 Released

FPGAs are expensive as far as I can tell. If you can find me a FPGA with a similar amount of RAM as an ESP32 and comparable price point, I’m interested. I’m actually making progress on the coprocessor! As of this afternoon, I have a sketch receiving SPI with the APA102 protocol at 4MHz using DMA (I2S In peripheral), writing to a 48bpp SmartMatrix buffer (taking advantage of the GBC bits in the APA102 protocol), refreshing a 64x64 panel at >120Hz 36-bit color. This is running on an ESP32 Pico…

@marcmerlin

Sure, a Pi is not as small, but by the time you’re using 3 uCs to run only 128x64 with wifi, a Pi may not seem so bad anymore?

Sure, if someone wants to use a Pi, there’s very little stopping them