HardLabs

Tao Te Ching

sudo-apt-install-tap·TaoTeChing·PCB/Tao Te Ching.kicad_pcb

Tao Te Ching PCB layout, top view — open source RP2040/RP2350 board by sudo-apt-install-tap
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About the Tao Te Ching PCB

Tao Te Ching is an open source RP2040/RP2350 PCB design by sudo-apt-install-tap, published on GitHub. It is a 2-layer board measuring 278.2 × 89.7 mm, with 98 components from 3 distinct parts.

Its main chip is the XIAO-nRF52840-DIP, from the RP2040/RP2350 family. By type, the board carries 48 switches, 48 diodes and 2 ICs.

It belongs with the keyboards designs in this gallery.

From the project

A open-source split keyboard made for ergonomics!! Made to feel minimalist. This is a ortholinear keyboard.

Split keyboard. Ortholinear grid with column stagger. Built for comfort and long sessions.

See renders and PCB files for exact spacing and geometry.

Plates can be 3D-printed (PLA works) or CNCed.

Tao Te Ching, from the project README
From the project README

Main components on the Tao Te Ching

XIAO-nRF52840-DIP

Tao Te Ching bill of materials (BOM)

98 components, 3 distinct parts — part numbers from the project's BOM.

QtyPartRefs
2
XIAO-nRF52840-DIP
U1, U2
48
SW_Push_45deg
SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 +40
48
D
D1, D2, D3, D4, D5, D6, D7, D8 +40

Tao Te Ching design files

The KiCad project lives in the sudo-apt-install-tap/TaoTeChing repository on GitHub; these links point at the commit this page was built from.

Tao Te Ching: common questions

What microcontroller does the Tao Te Ching use?

The Tao Te Ching is built around the XIAO-nRF52840-DIP, from the RP2040/RP2350 family.

How big is the Tao Te Ching PCB?

The Tao Te Ching measures 278.2 × 89.7 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Tao Te Ching?

98 components, from 3 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Tao Te Ching design files?

From the sudo-apt-install-tap/TaoTeChing repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Tao Te Ching design in my own project?

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

Can I test firmware for the Tao Te Ching 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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