9261cf368a
Twelve packages lifted from seedhammer/seedhammer @ v1.3.0
(commit 2f071c1d8f23eb7fd39b15fc0acb8874113f801e):
address/ — bitcoin address parsing
backup/ — v1 plate dimensions + UR-coded multi-plate backup
bc/ — Blockchain Commons: ur, fountain, bytewords, urtypes,
xoshiro256 (5 subpkgs)
bip32/ — HD-key derivation
bip39/ — mnemonic seed phrases + 2048-word wordlist
engrave/ — text/QR → MoveTo/LineTo command stream conversion
seedqr/ — SeedQR / CompactSeedQR encoders
image/ — paletted, rgb565, alpha4, ninepatch image formats
nonstandard/ — bitcoin descriptor + script parsing
font/ — bitmap + vector font runtime
font/{comfortaa,poppins,constant,bitmap,vector}/ — actual fonts
driver/mjolnir/ — MarkingWay USB-serial engraver driver
Plus an earlier-aside backup_test.go restored (its deps are now lifted).
Import paths globally rewritten seedhammer.com → mineracks namespace
via single sed pass; verified no orphan refs remain. go.mod adopts
upstream's full dep set plus the replace-directive for the patched
kortschak/qr fork.
go build ./... clean (all 27 packages)
go test ./... clean (12 packages with tests, all passing)
NOT lifted in this commit:
- driver/{wshat,drm,libcamera} (hardware-specific GPIO/LCD/camera —
will be platform-v1/-shaped abstractions instead)
- gui/ (depends on the above; lifts in Phase 2)
- cmd/{controller,...} (Pi binary entrypoints — not needed for the
companion repo)
- zbar/ (QR scanner — needs libcamera)
Next:
- Write the SH1E reference encoder/decoder in engrave/wire/sh1e/
- Lift Gangleri42's cmd/webnfc/ shell + retune to v1 plates
- First buildable composer WASM with a working preview
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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|---|---|---|
| address | ||
| backup | ||
| bc | ||
| bezier | ||
| bip32 | ||
| bip39 | ||
| bspline | ||
| cmd | ||
| docs | ||
| driver/mjolnir | ||
| engrave | ||
| font | ||
| gui | ||
| image | ||
| input | ||
| internal/golden | ||
| nonstandard | ||
| platform/v1 | ||
| seedqr | ||
| web | ||
| .gitignore | ||
| CREDITS.md | ||
| go.mod | ||
| go.sum | ||
| LICENSE | ||
| README.md | ||
seedhammer-v1-companion
Status: early development. Phase 1 (composer port) in progress. See docs/architecture/ for the project plan and design docs.
A browser-based companion for SeedHammer v1 hardware (the original Raspberry-Pi-Zero-based engraver), inspired by Gangleri42's SeedHammer II fork. Ships three coordinated tools and one optional desktop wrapper.
What this is
1. Plate composer (browser PWA)
Design a stainless steel seed-backup plate from your phone or desktop — seed words, custom title text, optional logos — then transfer the design to a real SeedHammer v1 controller via QR code.
The composer renders a pixel-faithful preview using the same Go code the Pi controller runs. What you see in the browser is what the engraver will physically punch.
The on-the-wire envelope is SH1E (a CBOR + CRC32 format documented at docs/architecture/sh1e-spec.md). Sized to fit a 24-word multisig plate in a single QR frame, with BBQr fallback for larger multi-plate manifests.
2. SeedHammer v1 emulator (browser PWA)
Run the real v1 controller firmware in your browser. The same gui/,
input/, and engrave/ Go packages that drive the physical device,
compiled to WASM. Use it to:
- Test workflows end-to-end without a physical device
- Take screenshots / record screencasts of v1 flows
- Demo SeedHammer v1 to people without shipping hardware
Keyboard mapping: arrows = joystick, Enter = center/confirm, 1/2/3 = Button1/2/3.
3. Bundled SeedSigner emulator (browser PWA)
A faithful in-browser SeedSigner — both the classic 1.3" 240×240 model and the newer 2.8" SeedSigner+ "jumbo" model. Generates seed-phrase QR codes that you can hand off to the SeedHammer v1 emulator via a single button press, end-to-end without leaving the page.
Built by hosting the upstream SeedSigner Python code via Pyodide so that the emulator IS the firmware — when SeedSigner releases new versions we bump the pinned commit and the sim updates.
4. Optional Android wrapper
Kotlin/Gradle shell hosting the composer WASM, for users who want a plate-design app instead of a PWA. Mirrors the structure of Gangleri42's SH2 Android companion.
Hardware targeted
This codebase targets the original SeedHammer v1 specifically — the [Pi Zero v1.3 / WaveShare 1.3" 240×240 LCD HAT / MarkingWay engraver] hardware. Not the newer SeedHammer II (RP2040 / TinyGo / SH2E NFC).
For an SH-II companion, use Gangleri42's fork directly. Most of the inspiration for this project comes from there.
Status & roadmap
- ☐ Phase 1 — composer port (Go-to-WASM, SH1E reference encoder, web UI)
- ☐ Phase 2 — v1 emulator (firmware-in-browser, Gangleri42-faithful UI shell)
- ☐ Phase 2.5 — SeedSigner emulator + QR handoff
- ☐ Phase 3 — combined three-pane sim
- ☐ Phase 4 — real-device validation on real v1 hardware
- ☐ Phase 5 (optional) — ColdCard emulator (port from Gangleri42's fork)
- ☐ Phase 6 (optional) — Android wrapper
Building
(Will be documented as Phase 1 lands — go build ./... + a Vite build for
the web shells.)
License
Released under the Unlicense (public domain dedication), matching upstream SeedHammer's choice. SeedSigner-derived files segregated and retain their MIT notice.
Credits + provenance
Heavy lifting by three upstreams. See CREDITS.md for what came from where and the pinned baseline commits.