PSS-270@yuyoi
Give a Yamaha PSS-270 a new brain: an Arduino Mega + ESP8266 takes over the YM2413 FM chip and the keyboard. MIDI in/out, arpeggiator, key menu, live FM tone editor with draggable envelopes, and WiFi
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1 open-source firmware project for the Yamaha PSS-270, from 1 creator.