Koshipad

KoshiPad

KoshiPad is a compact 9-key macropad. It features a 128×32 OLED display, per-key RGB backlighting, a rotary encoder, and a custom-designed PCB and enclosure.

Made in Fusion 360

PCB

Schematic

PCB

Made in KiCad

Features

• 9 mechanical keys
• 128×32 OLED display
• 9× SK6812 MINI-E per-key RGB LEDs
• EC11 rotary encoder
• Seeed XIAO RP2040
• Custom PCB designed in KiCad
• Two-piece 3D printable enclosure
• Snap-fit lip-and-groove case design
• KMK Firmware

CAD Model

The enclosure consists of two printed parts:

• Top case
• Bottom case

The PCB is mounted inside the bottom case using M3 hardware, while the top and bottom enclosure are secured using a snap-fit lip-and-groove mechanism for a clean, screw-free exterior.

Firmware

The macropad is powered by the [Seeed XIAO RP2040] and uses QMK Firmware for key scanning and custom keymap functionality.

Bill of Materials

Everything required to assemble the macropad:

• 1× Seeed XIAO RP2040

• 9× Cherry MX-compatible switches

• 9× DSA keycaps

• 9× SK6812 MINI-E RGB LEDs

• 9× 1N4148 DO-35 diodes

• 1× EC11 rotary encoder

• 1× 0.91" 128×32 OLED display

• 4× M3×5×4 mm heat-set inserts

• 4× M3×6 mm screws

• 1× Custom PCB

• 1× Two-piece 3D printed enclosure

• NOTE:

• I'm only using screws in the bottom case so 16mm screws will be too long for my case, I'd like to get M3 6mm if possible, if its not possible I'll buy the screws myself