Reviving an Analog Polysynth with an Arduino, Ghidra, and Python
About a year ago, smack in the middle of the pandemic, I turned to the internet for some retail therapy. I’m a musician, so my usual retail therapist of choice is Reverb.com; a sort of fancy Craigslist or eBay just for musicians. Every day, I would see new listings pop up for instruments I might want, like a 6-string fan-fret bass, a nice electronic drum kit, or my “holy grail” - a super-rare, 22-year-old analog synthesizer: the Alesis Andromeda.
The Andromeda is a 16-voice polyphonic analogue synthesizer; basically a keyboard that sounds very lush, human, and organic, and can play a lot of notes at once. (That combination is expensive, for reasons.) Every function is controllable by a separate knob on the front panel, making it extremely interactive; every knob makes the sound change in some way.
As a kid, I remember playing one of these at my local music store in the early 2000s...
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