Add a few outputs from the AM API to control the digital inputs for this - job sorted - no need for message port. - Oooooooooo ! edit - not sure if you can control the volume directly without using serial - which you can control the volume digitally.... - but' it looks possible in workmode 101 without serial.............. need to play with it as the bishop said...
https://www.aliexpress.com/item/4000158 ... 4c4dAUL2eb
The world is then your crab, or was it oyster ?
I have both the 8Mb units and the SD card unit... one day I will plug them in and wire them up, but, it seems ideal.
Does AM have a serial output hidden away ?
Whatever, even if messageport is needed, you probably don't need a DUE a simple UNO would do the job, or a nano using software serial I would expect.