Erica Synths open-sources the LXR-02 drum machine and invites owners to 'vibe-hack' it

Erica Synths has made the LXR-02's operating system open source and asked owners to change it. "We invite you to explore the code, experiment with it and share your results with the community," the company said. It tied the release to what it calls "vibe hacking": a moment when AI-assisted coding tools let musicians, not just firmware engineers, reshape the software inside their instruments.

For people who make beats on an LXR-02, this changes what they own. It's no longer a box that does what the factory decided. It's a box they're allowed to rewrite.

What was released?

The code sits in a public GitHub repository. It's the firmware for the desktop LXR-02, running on an STM32F765 chip, and it covers the drum voices, effects, step sequencer, MIDI over DIN and USB, SD-card presets and the screen and button interface. The firmware, bootloader and build system are licensed under GPL-3.0.

Some things stay closed. The repository says the hardware itself (schematics, board layouts, enclosure and industrial design) is not part of the release and not under the GPL. "Erica Synths" and "LXR" remain trademarks. Third-party components from STMicroelectronics, Arm and ChaN keep their own licences.

The GPL brings obligations. Anyone who shares a modified firmware must also share its source under the same licence, mark it as modified, and not present it as official.

What are the risks for owners?

Erica is clear that this is not a support promise. The repository says self-built or modified firmware is used at your own risk and gets no support, and Gearnews reports that any damage from hacking is the user's responsibility. One build target overwrites the bootloader. If that flash is interrupted, the README warns, the machine may need recovering with a hardware debug probe. That's a real cost for a musician who just wanted an extra sequencer feature.

The official route hasn't gone away. Erica's product page still lists official firmware updates, the latest being 1.71, a Euclidean sequencer fix from May 2025. It prices the machine at €490 before VAT and showed it out of stock when we checked.

Why is this a reversal?

The LXR line started open. The original LXR was a DIY kit from Sonic Potions, and the LXR-02 is its follow-up, developed with Erica Synths. When Sound On Sound reviewed the LXR-02, it noted the new machine was not a DIY kit and its operating system was not open source. This release brings the code back to the community it came from.

It also matches a pattern Gearnews points to: third-party firmware for machines like the FM-1, and emulators for Elektron gear, show there's demand for owner-made software on hardware instruments. We covered another case of a hardware company improving a machine after launch with Arturia's free AstroLab 2 update. The difference is who's doing the work.

What we think

The interesting part isn't open source. It's who Erica thinks will use it. Hardware makers have released code before, usually for a small group of embedded developers. Erica is pitching the LXR-02's code at musicians who will open an AI coding assistant, describe the feature they want ("add a ratchet mode to track 3"), and see if it builds. That's a bet that the bottleneck for owner-made features is no longer skill but permission, and that a GPL licence plus a public repo is enough permission.

We think the bet is half right. AI tools can lower the barrier to reading and changing C firmware. They don't lower the cost of a bad flash. A drum machine that won't boot the night before a gig is a worse failure than a plugin that crashes, and the README's own warning about debug-probe recovery shows Erica knows it. The likely outcome is a few skilled forks that many owners install, not thousands of owners each prompting their own build. That's still a good outcome. It just isn't "everyone codes now".

The useful model for other makers is the split. Erica keeps official firmware, its support line and its trademarks, and hands owners everything else under a licence that forces improvements back into the open. Owners of an ageing machine get a way to keep it alive after the company moves on. Erica gets free development and goodwill at no support cost. If you own an LXR-02 and want to try this, start from a community build with a track record rather than your own first attempt. Keep the official 1.71 firmware on hand, and don't flash the bootloader unless you own a debug probe.

If drums are your focus, our guides to drum programming basics and layering drums apply whatever firmware your machine runs.