Mouse

OpenMice

Custom PAW3395 rechargeable mouse, USB wireless receiver, and browser configurator.

Standalone repository: https://github.com/geoffgun15/openmice. Migrated from the original fork with all eight commits retained and the confidential PixArt PDF removed from every commit. Historical commit IDs changed.

A1 is a routed prototype package. Both boards pass KiCad electrical, clearance, connectivity and schematic parity checks. Custom runtime and bootloader builds, factory HEX, runtime UF2 and fabrication exports are included. Physical tests are NOT RUN: there is no assembled board. Review the first-article procedure and fabrication requirements before a prototype order.

The radio modules are soldered components on custom PCBs; nice!nano is no longer used. BLE is the prototype radio; proprietary 1000 Hz wireless is not implemented.

• Hardware files and validation status
• Setup, protocol and verification
• Mouse schematic / PCB
• Receiver schematic / PCB
• Browser editor

Board renders

KiCad assembly renders with all 51 mouse and 18 receiver components fitted. The sensor, radio module, USB-C, charger and crystal use simplified visual models; these images do not validate mechanical fit. The battery, main click switches and scroll encoder connect externally. See model details.

Mouse PCB · 64 × 94 mm	Wireless receiver PCB · 28 × 54 mm

Bare PCB views: mouse · receiver.

Preview

python -m http.server 8765 --bind 127.0.0.1 --directory web

Open http://127.0.0.1:8765/ in desktop Chrome/Edge. Demo mode works without hardware. A real connection requires the supplied runtime and mouse/receiver.

Native build details, hashes and CAD export workflow: BUILD.md.

Development

python -m unittest discover -s tests -v
node --test web/test.mjs
python tools/package_firmware.py

tools/build_hardware.py regenerates starting placements and overwrites manual edits. The confidential sensor PDF is excluded from this public repository and its Git history. Prototype assumptions: LM19-LSI optics, 64 x 94 mm mouse outline, external switch/encoder contacts, and a protected 300 mAh cell with compatible NTC temperature sensing.

Project code: MIT. Vendored KiCad libraries retain their upstream licenses; see hardware/README.md. Obtain sensor documentation through an authorized source.