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

Kyiv-based Sitka Instruments is making the awesome Gravity Eurorack clock module open-source hardware. It’s an easy and affordable build, and there are already cool alternate firmwares available, with more to come. Sitka is supporting the community — and you can give back by supporting Ukrainian causes.

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

Italy’s Faselunare have done lots of great stuff over the years, and they’re entering the final hours of crowdfunding for Cosmolab, a powerful modular DSP kit powered by Electrosmith’s Daisy Seed. Let’s have a quick look. There are a number of these ideas, and with good reason — choice is at the heart of why […]

Peter Kirn - January 29, 2026

Watch as a telephone is transformed into a DIY analog drum machine

Push-button telephone. Analog drum machine. Arduino Nano. DIY amplifier. Shashwath Sundar, aka simple_but_nerdy, makes the telephone-drum machine fusion seem like it was meant to be.

Peter Kirn - January 9, 2026