Limited run of 10
Assembled
$250
- Fully assembled and tested
- 13 switches and printed keycaps
- Knob, joystick, screen and RGB lights
- Firmware installed
- Free shipping, US only
Limited run of 10
C5 Macro Pad
A tiny control deck for your desk: 13 keys, a knob, a joystick, a screen and lit keys. Inspired by the OpenAI × Work Louder Codex Micro. Buy one assembled, or get the files and build your own.
Loading geometry
- Case
- 116.1 × 124.1 × 28 mm
- Keys
- 13 MX hot-swap, 21.5 mm grid
- PCB
- 4-layer, 1.6 mm, 96 × 112.8 mm
- Controller
- Adafruit KB2040 (RP2040), socketed
- Display
- 0.85" 128 × 128 LCD
- Input
- Rotary encoder + analog joystick
- Light
- 6 SK6812 RGB, through-board
- Port
- USB-C, rear, ESD + fuse protected
Instant download
Build it yourself
$50
- Print files. All 14 STLs: case, plate, caps, knob, foot, washer and fit tests.
- JLCPCB order. Gerbers, BOM and CPL, ready to upload for an assembled PCB.
- CAD (STEP). Every part, the fabricated PCB and a full assembly reference.
- KiCad project. Board, schematics, symbols and footprints.
- Firmware. CircuitPython code and the screen test.
What it does
13 hot-swap keys
Plug-in MX switches on a 21.5 mm grid, including one wide key. Bind them to anything.
Knob and joystick
A clicky rotary encoder for scrolling and an analog joystick for navigation.
Built-in screen
A 0.85" color LCD on the front, driven by the controller.
Lit keys
Six RGB lights shine up through the board into the top row keys.
Open firmware
CircuitPython on an RP2040. Edit one file to change what every input does.
USB-C
One cable for power and data, with ESD protection and a resettable fuse.
C5 sends standard keys (F13–F24, arrows, Enter) that you map in your own tools. It is an independent design and does not include the official Codex Micro's native app integration.
What's in the files
Everything used to make C5, plus a step-by-step guide. Download right after checkout.
Print files
All 14 STLs: case, plate, caps, knob, foot, washer and fit tests.
JLCPCB order
Gerbers, BOM and CPL, ready to upload for an assembled PCB.
CAD (STEP)
Every part, the fabricated PCB and a full assembly reference.
KiCad project
Board, schematics, symbols and footprints.
Firmware
CircuitPython code and the screen test.
Build guide
Ordering the PCB, the parts list with links, print settings, assembly, screen wiring and first power-on.
FAQ
Does it work with the Codex app like the original?
No. It's a USB keyboard that sends standard keys (F13–F24, arrows, Enter). You map those to shortcuts in your editor, terminal or OS. It doesn't have the official device's native app integration.
What do I get with the files?
Everything used to make it: 14 STL print files, STEP CAD, the KiCad PCB project, ready-to-upload JLCPCB order files and the firmware. You download them right after checkout.
What does it cost to build from the files?
You order the PCB assembled from JLCPCB (minimum five boards), then add a KB2040 controller, switches, joystick, knob, screen and screws. The download includes the full parts list with links and a step-by-step build guide.
When does the assembled one ship?
Units from this run are built and ready. You'll get tracking by email once it ships. US addresses only.
I lost my download link.
Reply to your Stripe receipt email and I'll send it again.