A trail camera that sends its pictures to the cabin over a Wi-Fi HaLow mesh, so a site four hours from a road can be looked at without driving out. One board, populated three ways: the camera, a relay that extends the mesh, and the base at the cabin that talks to the controller. The processor is the ESP32-P4 with a MIPI camera, chosen for night pictures; the radio is a HaLow module.
| File | What it is |
|---|---|
| CAMERA-MESH.md | The product: what it does, the mesh, the power budget, what has to be measured before anything is built |
| board/CAMERA-NODE.md | The circuit specification the schematic is drawn from: blocks, rails, pin budget, the decisions left to draw time |
| board/CAMERA-LAYOUT.md | The placement and routing rules, numbered C-nn, with their reasons |
| board/layout/ | The placement and routing scripts that produced the first copper, in the order they run |
| drawings/ | The build and schedule drawings |
Every part is a candidate until it has been picked with its datasheet open. The next step is the night-picture test on the P4 evaluation board; the schematic is drawn against the result, not before it.
Design source: board/easyeda/origin89-camera.eprj2, the
EasyEDA Pro project of this board alone, split out of the controller's.
Export of 2026-09-09: board/build/2026-09-09/,
Gerbers, bill of materials,
pick-and-place, schematic PDF,
STEP and one DXF of every layer. The STEP is in Git LFS, so install
git-lfs before cloning or it comes down as a pointer file; it carries every
part but C59, which has no model. Nothing has been fabricated from it.
The Gerbers are checked by tools/validate_gerbers.py, the same script the
hardware repository runs on the controller, against
board/gerber-rules.json: the C-02 keep-outs at
the four mounting holes and the C-11 antenna void, layer by layer. It runs
in CI on every push and it is red on the 2026-09-09 export: the ground pour
reaches every mounting hole on all four layers, 29 mm² of copper inside the
3.5 mm keep-out at each, where C-02 wants none and C-03 wants the hole on
no net. The fix is the controller's: a prohibited region at each hole on
every copper layer, then the pours rebuilt. It is tracked as
issue #1, and the check
goes green when the next export passes. Nothing has been fabricated from
this export, so no board carries the fault.
pip install gerbonara shapely
python tools/validate_gerbers.py board/gerber-rules.json board/build/2026-09-09/gerber.zipExports are filed with tools/import_easyeda_export.py board <export folder>,
the same way the hardware repository
files the controller's: the date becomes the directory and each file gets
the name its kind always gets.
Design files and drawings under the CERN Open Hardware Licence version 2, weakly reciprocal (LICENSE); the scripts under MIT OR Apache-2.0 (LICENSE-MIT, LICENSE-APACHE).