DIY digital controlled analog POLYPHONIC SYNTHESIZER

Over the last year I built this digitally controlled analog polyphonic synthesizer. All schematics and PCBs I created myself (except of the chorus). Please subscribe and like and get notified about upcoming videos on my channel.

It was harder than I thought to finish this project but I learned how to layout PCBs and a lot about vintage synthesizers.

0:00 - Voice Stacking/Detuning 0:34 - Envelope Generator 1:55 - Filter 3:10 - Filter with Envelope Generator 5:38 - PWM 6:48 - Filter Resonance with LFO 7:26 - PWM with LFO 8:53 - Filter Cutoff with LFO 10:28 - Arpeggio 13:45 - Chorus 15:11 - Arpeggio 18:24 - Arpeggio

All schematics and PCB layouts can be found on https://github.com/polykit

GitHub: https://github.com/polykit Mastodon: https://chaos.social/@polykit

Specs are:

• 6 voice polyphonic analog DCO based on Juno 106 using a single Raspberry Pi Pico
• Sawtooth and square signal
• PWM control (manual, LFO)
• Voice stacking and detuning
• MIDI input
• MIDI pitch bend
• MIDI portamento https://youtube.com/shorts/DGcm8E8b2Ko
• CEM3350/AS3350 state variable filter
• Lowpass and bandpass output
• Frequency cutoff/center control (manual, ADSR, LFO)
• Resonance control (manual, LFO)
• LFO
• 2x ADSR based on CEM3310/AS3310 (SVF, VCA)
• Juno 60 chorus clone

Attention! This is not for beginners in electronics nor a finished product.

#synthesizer #polyphonic #diy