x0xb0x, the synth that launched an open-source hardware boom, is reborn

Based on the legendary TB-303, the x0xb0x was an underground legend all its own, one that helped popularize the open-source hardware movement. And now it’s back, in a digital emulation of the original hardware, from x0xb0x’s original creator.

Noiseferatu: open-source, 45 algorithms, like a KAOSS Pad from Hell

Sleepwalking? Unexplained seizures? Neighbors have a rodent and plague problem? Don’t worry, and don’t be spooked by what some nuns told you! You just need the handheld, open-source Scaepe – Noiseferatu DIY kit!

Peter Kirn - June 23, 2026

dadamachines tbd 16: a groovebox that’s compact, capable, and open by design

tbd 16 does everything the other standalone grooveboxes do, but in a handheld form factor, built as an open platform that you’re free to customize, mod, and hack. Choose the engines and apps you want to use. And get them all on a compact, standalone device that rivals big-name competitors in a fraction of the […]

Peter Kirn - May 5, 2026

Sitka’s excellent Gravity clock Eurorack module is now open source

Peter Kirn - March 12, 2026

Michigan Synth Works has an open-source 303 processor and a new kit

Peter Kirn - March 3, 2026

Basil stereo delay completes Bastl’s PIZZA trio on VCV Rack — all for free

Peter Kirn - February 22, 2026

Cosmolab, open DSP development kit, in final hours of crowdfunding

Peter Kirn - January 29, 2026

Bastl’s Kastle 2 and Citadel Eurorack are now DIY kits, open source platforms

Peter Kirn - January 21, 2026

Etsuko’s Eterna for monome norns, an elegant 6-voice slice instrument

Peter Kirn - December 26, 2025