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Hub20

by joshajohnson · ★ 67 · checked today ·

22 / 19 keys unibody

MX soldered STM32F072 QMK

Photo of an assembled Hub20 — An assembled Hub20, from the project's own README.

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Record 100% complete · 18 of 18 fields

✓ Layout
✓ Switch footprint
✓ Build method
✓ Controller
✓ Body
✓ Firmware
✓ Hardware license
✓ Firmware license
✓ Documentation license
✓ Key pitch
✓ Soldering
✓ Soldered MCU
✓ Firmware targets
✓ Summary
✓ Key wiring
✓ Hotswap
✓ Splay
✓ Stagger

Hub20 is a numpad with a bunch of features you never knew you needed.

From the project’s README · https://github.com/joshajohnson/hub20

Layouts

22 keys
19 keys

Spec

Shape

Body: unibody
Splay: no
Stagger: ortholinear
Key spacing: MX spacing · 19.05 × 19.05 mm

Switches

Switch footprint: MX
Hotswap: Mill-Max, or solder the switches in

Electronics

Controller: soldered STM32F072
Connectivity: Wired — the soldered STM32F072 has no radio
USB port: USB-C
Firmware: QMK (joshajohnson/hub20)
Firmware targets: STM32F072
Key wiring: 6×4 matrix, column-to-row diodes
Room for: encoder
Power switch: no
Exposed components: no

Building it

Build method: PCB
Soldering: SMD, fine-pitch (MCU, USB, IC)
SMD required: yes

Licensing

Hardware: CERN-OHL-S 2.0
Firmware: CERN-OHL-S 2.0
Documentation: CERN-OHL-S 2.0

Sources

https://github.com/joshajohnson/hub20