Custom Macropad
> A hall-effect macropad engineered from the silicon up — custom KiCad PCB, analog magnetic switches, and embedded firmware that speaks USB HID.
Hardware
Analog magnetic key switch
- Type
- Mechatronics
- PCB
- KiCad · 2-layer
- Switches
- Hall-effect
- Interface
- USB-C HID
- Enclosure
- 3D printed
Custom KiCad PCB
Designed the schematic and 2-layer board from scratch in KiCad — matrix wiring, decoupling, and a USB-C front end routed by hand for a clean, manufacturable layout.
Hall-effect switches
Analog hall-effect sensors read continuous key travel instead of a binary press, enabling adjustable actuation points and rapid-trigger behaviour.
Embedded firmware
Bare-metal firmware samples each sensor's magnetic field, calibrates per-key, and maps travel to HID events — presenting to the host as a standard USB keyboard.
3D-printed enclosure
Parametric case modeled for tight switch tolerances, with a friction-fit plate and clearance for the PCB and connector.