Open-source Bitcoin mining control board. Can run a full Bitcoin node, Stratum server, and various hashboards. Swappable compute module — ARM, RISC-V, or more. No closed-source control boards. Not anymore.
Libre Board is an open-source mining control board developed under the 256 Foundation grant program, designed to complete the fully open mining stack alongside Ember One and Mujina. Every mining control board on the market today is closed source — Libre Board changes that.
The first release is based on the Raspberry Pi Compute Module I/O board and is designed to run Mujina firmware, connect to Ember One hashboards via USB, and simultaneously run a Bitcoin full node and Stratum server. It features a wide set of standardized I/O: USB hub, Ethernet, HDMI, NVME, MIPI touchscreen port, RPi 40-pin header, fan connectors, and 12–24VDC input. Two 100-pin compute module connectors let users choose their own processor — Raspberry Pi, ARM, RISC-V, or others — since Mujina is Linux-based and hardware-agnostic.
Future forks can adapt the form factor and I/O to match Antminers, Whatsminers, or any other mining hardware, making Libre Board a foundation for the broader open mining ecosystem — not just a single product.
GitHub is for design work. Hardware issues, KiCad file bugs, pull requests, and design file discussions belong in the Libre Board GitHub repo.
This forum is for the conversation around that work. Use it for:
- Build & assembly questions — sourcing components, compute module selection, first-time setup
- Hardware troubleshooting — I/O issues, power input, fan connections, USB hub behavior
- Compute module discussion — comparing RPi CM5, RISC-V, ARM, and other module options
- Integration with Ember One & Mujina — getting the full stack running together end to end
- Forks & derivatives — adapting Libre Board for Antminer, Whatsminer, or custom enclosures; show off what you’ve built
- Show & tell — share your setup, your results, your stack
Lead Engineer: @Schnitzel | Project Manager: @econoalchemist | Funded by the 256 Foundation