HardLabs

Zerowriter Keyboard

zerowriter·zerowriter_ink·design/zw_keyboard/Kicad/CAD/Zerowriter Keyboard.kicad_pcb

Zerowriter Keyboard PCB layout, top view — open source ESP32 board by zerowriter
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About the Zerowriter Keyboard PCB

Zerowriter Keyboard is an open source ESP32 PCB design by zerowriter, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 271.2 × 93.4 mm, with 136 components from 14 distinct parts.

Its main chip is the ESP32-WROOM-32U, from the ESP32 family. By type, the board carries 61 diodes, 5 switches, 3 capacitors, 2 relays, 1 IC and 1 resistor.

It belongs with the keyboards designs in this gallery.

From the project

General repo for all things Zerowriter Ink

General repo for all things Zerowriter Ink.

Note that the current public firmware is 1.30. If you are using a factory Zerowriter Ink, you may experience some bugs.

For those field testing or using new units, consider opening an issue if you find bugs. You can do that here: (https://github.com/zerowriter/zerowriter_ink/issues)

This repo will be updated with the source code, documentation, and design files for ZW Ink.

Main components on the Zerowriter Keyboard

ESP32-WROOM-32U

Zerowriter Keyboard bill of materials (BOM)

136 components, 14 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ESP32-WROOM-32U
U1
50
choc_v1_SW_HS
CH1, CH2, CH3, CH4, CH5, CH6, CH7, CH8 +42
2
choc_v1_SW_HS
CH15, CH28
1
choc_v1_SW_HS
CH29
8
choc_v1_SW_HS
CH54, CH55, CH56, CH57, CH58, CH59, CH60, CH61
1
HC-1.25-6PWT
K1
1
NOVA_programmer_header
K2
2
RESET
RST1, RST2
4
choc_stab
S1, S2, S3, S4
1
choc_stab
S5
61
D
D1, D2, D3, D4, D5, D6, D7, D8 +53
1
10u
C1
2
0.1uF
C2, C3
1
10K
R1

Zerowriter Keyboard design files

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

Zerowriter Keyboard: common questions

What microcontroller does the Zerowriter Keyboard use?

The Zerowriter Keyboard is built around the ESP32-WROOM-32U, from the ESP32 family.

How big is the Zerowriter Keyboard PCB?

The Zerowriter Keyboard measures 271.2 × 93.4 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Zerowriter Keyboard?

136 components, from 14 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 Zerowriter Keyboard design files?

From the zerowriter/zerowriter_ink 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 Zerowriter Keyboard design in my own project?

Yes, under the terms of its GPL-3.0 license, which zerowriter chose for the repository.

Can I test firmware for the Zerowriter Keyboard without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.

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