Hagiwo $9 VCO monosynth

craigbarnes · Joined: Oct 30, 2022 Posts: 22 Location: UK

I think technically this is a microprocessor based synth as it uses 2 RP2040's for the oscillators, an Arduinoi NANO for MIDI to CV and a Teensy for programmable options.

This is a take on the Hagiwo $9 VCO based on the Seeed XIAO RP2040 SOC. I bought several of these with the intentions of making a polysynth, but I went another route and used a pair of these for a mono synth with interesting specs.

Dual VCO
24 waveforms per VCO
Portamento
Aftertouch
24db multipole VCF like the Matrix 12
Dual ADSR inc LOG/LIN and looping envelopes
16 waveform LFO
Many other things I've forgotten

https://www.youtube.com/watch?v=rGxqNbb8Zx0

Details available here

https://github.com/craigyjp/Dual-VCDCO-monosynth

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