EMBER ONE

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Where EMBER ONE Is Today ​

Ember One is a published reference design. Boards have been built and have run real hashrate. This page says what is in hand, what is not, and how to decide whether to use the files.

Current as of November 4, 2026

This page tracks a moving project. Follow the work lists where change shows up.

What exists ​

The EmberOne/00 repository records revisions from v1 through v6.1. The latest revision is v6.1. This site describes those files. See Revisions.

Boards have been fabricated, brought up, and run real hashrate against a real pool. At Telehash #2 (May 5, 2025) an early board hashed live to an early Hydrapool instance. At Telehash #3 (January 21, 2026) Ember One hashboards, driven by Libre Board and running Mujina, mined into a self-hosted Hydrapool. The full stack demonstrated working end-to-end at the Foundation's own event.

Initial support for EmberOne/00 is in Mujina. Further development and optimization are ongoing. See Run with Mujina.

Validation ​

Ember One is under active development. Revision 6.1 still requires board validation and measured performance testing.

What does not exist yet ​

  • A GitHub Release newer than v3 (2025-04-30). Later revisions are branches.
  • A measured hashrate for revision 6.1. The theoretical nominal hashrate is 3.6 TH/s. It still needs verification on rev6.1. See Hashrate.
  • A build guide for the v6.1 design. assembly.md is on the v3 release and on master. It is not on v6.1. This site does not reprint it.
  • A heatsink or water-block design. None is included yet. You provide the cooling for development and testing. The hashboard has no fan connector. See Cooling.
  • Boards for sale from the 256 Foundation. The Foundation does not manufacture or sell Ember One.

Is EMBER ONE for you yet? ​

Read or build on the design: the files are published. Start with Design files and Specifications. Review the validation status before using the files.

Buy a board: no. The 256 Foundation does not manufacture or sell boards. This site is not a catalog, and it names no seller.

Run the firmware: use Mujina. This site has no Ember One procedure of its own.

Follow the work ​

See also ​