Mujina Dev Call 20260706

[rkuester]

Note: the recording of this call failed, so there is no transcript or AI summary this time. The agenda below stands as the record. If you attended and have notes or remember decisions worth capturing, please add them as a comment.

Agenda

Note: These meetings are recorded and transcribed by AI.

Purpose: touch news and happenings to keep everyone aware of what's happening,
roughly follow development workflow, not replacement for the other communication
channels

Follow-up

• Last call
  • Summary and transcript now in the top post
• Action items mostly covered by items below; still open:
  • CGMiner-compatible status endpoint on port 4028 for discovery
    (waiting on an example payload)

Forum & Chat

• WSL issues prevent bitaxe-raw talking to Mujina
• Where is S19j Pro support?
• New GridPool landing page is up

Discussions

• Configuration system and REST API #57
• Nonce space configuration #72
• StratumV2 support #54
• Support for Avalon Nano 3s #25

Issues

• All issues
• bug(cpu_miner): forced share rate is wrong and never converges #59
• Upstream bitaxe-raw build regression (esp toolchain LLVM 21):
  • build: release build fails on esp toolchains 1.94.0.0+ (LLVM 21 "Cannot select" regression) bitaxeorg/bitaxe-raw#16
  • build: pin esp toolchain to 1.93.0.0 to avoid LLVM 21 miscompile bitaxeorg/bitaxe-raw#17
  • Raises a question: who owns and maintains the board firmware we
    depend on, bitaxe-raw
    (bitaxeorg) and
    emberone-usbserial-fw
    (256foundation)?

PRs

• All PRs
• Merged since last call:
  • docs(contributing): reflect agreed contribution flow and channels #67
  • fix(bitaxe): replace bitaxe expect calls with anyhow::Err #74
• feat(stratum_v2): add SV2 support #65
• feat(bm13xx): multi-chip groundwork for EmberOne00 and Bitmain chains #77
• Windows support, two overlapping PRs:
  • feat(transport): add native Windows support #75
  • feat: native Windows support for Bitaxe mining #76
• feat(bitaxe): add PI-based fan speed controller #33
• Make non-glibc Linux cross-compilation work #55
• cpu-miner: make the CPU backend a first-class citizen for API/tooling #56
• BZM2 (Intel Bonanza Mine 2) stack:
  • docs: add BZM2 port engineering notes under docs/bzm2/ #66
  • feat(board): per-board command channel, power-rail primitives, thread telemetry types #68
  • feat(asic): Intel BZM2 (Bonanza Mine 2) ASIC family support #69
  • feat(board): BZM2 board driver with calibration and runtime tuning #70
  • feat(api): BZM2 diagnostic endpoints and hardware documentation #71

Other

• Mujina at bitcoin++ in Nairobi:
  debrief from the June 17-19 workshop
• CI now checks each PR commit individually (supports the atomic-commit
  contribution flow)

Open floor