I have a mysterious issue with Raspiaudio V3 when i hook up an I2C display to it (in order to view what is going on with Minidexed (GitHub - probonopd/MiniDexed: Dexed FM synthesizer similar to 8x DX7 (TX816/TX802) running on a bare metal Raspberry Pi (without a Linux kernel or operating system)))
When i do run Minidexed on it, it works. When i run this other fork on it - miniJV880 (GitHub - giulioz/mini-jv880) i get garbled output.
Switching Raspiaudio V3 out for the Raspberry DAC+ (or IQAudio DAC+) in both of these cases and the LCD will display the contents perfectly fine. The LCD is connected 100% the same when using both these DACs.
Of course, as the Raspiaudi one is much smaller, that would be my preferred unit to use (i’m building a 19-inch rack for these bare-metal instruments) but i don’t understand how they differ in such a way that the V3 gives the garbled output where the other one does not.
Is there something i can try to remedy it?
Connecting the LCD straight to the rPI5 works in both cases as well.
