Hi, these 2 PINs is reserved as I2C host to drive the external display panel, but it can’t support any panel, we’ve just supported one which is used on model S50, and did not sell it standalone yet.
I learned about UART commands of Arylic’s boards, and I was able to develop an external screen ( LCD 20x4 ) based on the ESP32 Microcontroller using its serial ports, it works pretty well but needs a some improvements.
I will share the project later, and also the source code ( Arduino bootloader ) with explanations.
That’s an amazing job! I am really looking forward for the documentation and the code because I am planning to bring my old Internetradio back to life with an up2stream board. A display would be really nice.
This is exactly what i want to be able to do! Potentiometer for volume, buttons for play pause ffwd rev mute, and a display to tell what’s going on… synchronized to the music on the other side of the house.