Post-prototyping phases. Prototyping stages are documented in prototyping/README.md.
Both halves connected via TRRS cable, one half USB to PC.
- PCB design in KiCad, fabrication via JLCPCB
- 3D printed case (prototype enclosure)
- Port firmware from breadboard to final PCB
- UART transport between halves
- USB HID to PC
Peripheral half wireless, central half still USB to PC.
- BLE transport replacing UART
- LLPM for low-latency connection
- Power management, battery life optimization
Both halves wireless. XIAO nRF52840 dongle to PC.
- Dongle firmware
- Dual LLPM connections
- Wired USB fallback
- OTA firmware updates (DFU over BLE)
Replace 3D printed case with CNC machined aluminum.
- CAD modeling based on Phase 1 case dimensions
- Antenna window or cutout for BLE signal (aluminum blocks RF)
- Material and finish selection (anodizing, bead blasting)
- CNC fabrication