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Embaxus Steno Keyboard

MaryTennyson·Embaxus_Steno_Keyboard·hardware/embaxus-steno-keyboard.kicad_pcb

Embaxus Steno Keyboard PCB layout, top view — open source RP2040/RP2350 board by MaryTennyson

About the Embaxus Steno Keyboard PCB

Embaxus Steno Keyboard is an open source RP2040/RP2350 PCB design by MaryTennyson, published on GitHub. It is a 2-layer board measuring 273.8 × 85.7 mm, with 124 components from 7 distinct parts.

Its main chip is the RP2040_Zero, from the RP2040/RP2350 family. By type, the board carries 32 LEDs, 32 capacitors, 29 diodes, 28 switches, 1 IC and 1 connector.

It belongs with the keyboards and displays & leds designs in this gallery.

From the project

28-key stenography keyboard PCB: RP2040-Zero, MX switches, 32x SK6812MINI-E per-key RGB (KiCad 10)

A 28-key stenography keyboard PCB with per-key RGB, designed in KiCad 10.

- MCU: Waveshare RP2040-Zero (mounted on the back, USB-C at the right edge) - Switches: 28× Cherry MX-compatible, PCB mount - Lighting: 32× SK6812MINI-E reverse-mount RGB LEDs (28 under the keys + 4 standalone) - Board: 2 layers, 273.84 × 85.73 mm, 1.6 mm FR-4

The full schematic is in docs/schematic.pdf.

Embaxus Steno Keyboard, from the project README
From the project README

Main components on the Embaxus Steno Keyboard

RP2040_Zero

Embaxus Steno Keyboard bill of materials (BOM)

124 components, 7 distinct parts.

QtyPartRefs
1
RP2040_Zero
U2
1
Conn_01x08_Pin
J1
28
~
S1, S2, S3, S4, S5, S6, S7, S8 +20
32
SK6812MINI-E
LED_1, LED_2, LED_3, LED_4, LED_5, LED_6, LED_7, LED_8 +24
29
1N4148
D1, D2, D3, D4, D5, D6, D7, D8 +21
32
100nF
C1, C2, C3, C4, C5, C6, C7, C8 +24
1
330
R1

Embaxus Steno Keyboard design files

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

Embaxus Steno Keyboard: common questions

What microcontroller does the Embaxus Steno Keyboard use?

The Embaxus Steno Keyboard is built around the RP2040_Zero, from the RP2040/RP2350 family.

How big is the Embaxus Steno Keyboard PCB?

The Embaxus Steno Keyboard measures 273.8 × 85.7 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Embaxus Steno Keyboard?

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

Where can I download the Embaxus Steno Keyboard design files?

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

Can I use the Embaxus Steno Keyboard design in my own project?

The repository has no license, so all rights stay with MaryTennyson. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Embaxus Steno Keyboard 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.

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