Apologies for any ignorance I'm about to display. Not sure if anyone can help but If I am building a really 'simple' synthesizer which has multiple relaxation transistor oscillators all going into one output, running off a 9v (like look mum no computers circuit), how I would I look into combining a MIDI input so you could control them like synth voices with a musical keyboard, preferably with polyphony. I have looked into building the MIID input circuit with an optocoupler and I think I understand that I need some kind of microcontroller (arduino/teensy?) to convert the digital signals into something that triggers the oscillators? Would the MIDI input circuit work off the 9V? Would I have to decrease the voltage going to the circuit? What other tomfoolery am I going to have to do to get something relativley useful.
There's alot of info on doing this for digital synths but can't find something concise for this project.
Thanks
There's alot of info on doing this for digital synths but can't find something concise for this project.
Thanks