KeeNoard

yuburoll·KeeNoard·kicad/KeeNoard-SMD.kicad_pcb

About the KeeNoard PCB

KeeNoard is an open source RP2040/RP2350 PCB design by yuburoll, published on GitHub under the MIT license. It is a 2-layer board measuring 131.5 × 99.9 mm, with 50 components from 7 distinct parts.

Its main chip is the RP2040-Zero, from the RP2040/RP2350 family. By type, the board carries 25 diodes, 20 switches, 3 transistors, 1 IC and 1 connector.

It belongs with the keyboards designs in this gallery.

From the project

38-key split keyboard with rotary encoder and single board

KeeNoard(name intended typo between B and N) is 38-key split keyboard with rotary encoder and multiple center key, with only one rp2040 zero board.

Inspired and learned many thing from the former great Cheapino, KeeNoard uses only one board and Japanese duplex matrix, and controlled ghosting with three PNP transistor and active-high matrix.

Default keymap uses customized Miryoku - with slight different mouse and navigator keys. Two center keys are mapped to left Y and right B, which are originally intended.

KeeNoard, from the project README — From the project README

Main components on the KeeNoard

RP2040-Zero

KeeNoard bill of materials (BOM)

50 components, 7 distinct parts.

Qty	Part	Footprint	Refs
1	RP2040-Zero	RP2040-Zero-OPTIMIZED	U1
2	PNP	TO-18-3-PNP_REVERSIBLE	Q1, Q2
1	PNP	SOT-23-PNP_REVERSIBLE	Q3
1	8P8C_Shielded	RJ45_Ninigi_GE_REVERSIBLE	J2_RECV1
19	SW_Push	Kailh_socket_MX_optional_reversible	SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 +11
1	RotaryEncoder_Switch	RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm_REVERSIBLE	SW20
25	D	Diode_TH_SMD_REVERSIBLE	D1, D2, D3, D4, D5, D6, D7, D8 +17

KeeNoard design files

The KiCad project lives in the yuburoll/KeeNoard repository on GitHub; these links point at the commit this page was built from.

Layoutkicad/KeeNoard-SMD.kicad_pcb
Schematickicad/KeeNoard-SMD.kicad_sch

KeeNoard: common questions

What microcontroller does the KeeNoard use?

The KeeNoard is built around the RP2040-Zero, from the RP2040/RP2350 family.

How big is the KeeNoard PCB?

The KeeNoard measures 131.5 × 99.9 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the KeeNoard?

50 components, from 7 distinct parts. The full bill of materials is listed on this page.

Where can I download the KeeNoard design files?

From the yuburoll/KeeNoard repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the KeeNoard design in my own project?

Yes, under the terms of its MIT license, which yuburoll chose for the repository.

Can I test firmware for the KeeNoard without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.