Electronic musical instruments and DIY kits
made in San Francisco, CA

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ER-99 Web Drum Synth

An open source, virtual analog drum synthesizer modeled on a classic 80s Japanese instrument. Play it in your web browser to celebrate 9/09 day 2022!

Read the source code on Github →

Super Sixteen DIY Eurorack Sequencer

A 64-step control voltage sequencer with 99 song patch memory, motion recording, scale selection, realtime pitch and rhythm effects, and a uniquely powerful two-handed programming interface.

Resellers - Complete Modules:

• 
  Perfect Circuit (US)
• 
  SchneidersLaden
  (DE)

• 
  Signal Sounds
  (UK)
• 
  RobotSpeak
  (US)

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Resellers - PCBs and kits:

• 
  synthCube
  (US)
• 
  Exploding Shed
  (DE)
• 
  Thonk
  (UK)

Documentation:

• USER MANUAL (pdf)
• BUILD GUIDE (pdf)
• BILL OF MATERIALS (octopart list)
• INTERACTIVE BOM (html - for easy part placement) CPU board / Control board
• Video build guide
• 1v/oct calibration tutorial video
• Build support thread on Mod Wiggler