StemDeck, a free, open-source and local AI stem separator

Continue the trend and launch stm deck — open source microcontrollers

I can't wait to run Stemdeck on my Steam Deck and trigger it with a button on my Stream Deck!

Shipping a Tauri desktop shell wrapping a Python/PyTorch inference backend is tricky to get right across platforms. A few thoughts and questions on the packaging and runtime side:

- Sidecar packaging vs portable runtime: Are you bundling a frozen Python environment with PyTorch/CUDA embedded in the native installer, or bootstrapping wheels on first launch? Bundling torch + CUDA binaries easily pushes installers past 2-3GB, whereas bootstrapping requires reliable network access on end-user machines.

- Peak memory on 6-stem Demucs: Running htdemucs_6s with default segment sizes and shifts can spike VRAM/RAM pretty heavily on longer tracks. Are you dynamically clamping the segment window or chunk overlap when falling back to CPU or 4GB/6GB consumer GPUs?

- Localhost port collisions: Using FastAPI over a fixed localhost port often runs into conflicts with other local dev tools or corporate firewall/VPN endpoint blockers. If you ever hit that, switching the Tauri-to-Python IPC to named pipes (Windows) / domain sockets (Unix) or dynamically negotiating an ephemeral loopback port saves a ton of support headaches.

Great work putting this together. Having zero-cloud, zero-telemetry local audio processing in a clean native UI is a huge win.

I just want to say, kudos on your We Recommend section.

I was initially rolling my eyes at the "StemDeck... does not accept any money, sponsorship, or funding" line, here we go, another open source project that isn't thinking about practicalities... until I saw you were linking to others as pure recommendations. Just for the joy of what they do & how they've helped you and hoping they do the same for others.

The web used to have a lot more of that. It's a shame that doing so now often requires a disclaimer, and comes with the suspicion of being an influencer, or being done for SEO. And certainly many open source projects have done their part in corrupting the web too, accepting payment in return for SEO links on their pages. (Don't get me started on some of the things Mastodon accepted payment for...)

Thank you for bringing back that more hopeful, joyous part of the web and the music community.

Damn, was hoping this would be an upgrade over (the seemingly abandoned) UVR5