2 layers248 × 76.3 mm Polyglot Keyboard, the printed circuit board in 3D

Polyglot Keyboard

Size: 248 × 76.3 mm
Copper layers: 2
Thickness: 1.6 mm
Parts: 97
Nets: 65
Pads: 320
Tracks, vias: 290, 1
Routed: Yes
KiCad: KiCad 10.0 (file 20260206)
Created: 24 Jun 2026
Updated: 30 Jul 2026

Overview

Polyglot Keyboard is an open-source printed circuit board by SabhyaAggarwal, from the SabhyaAggarwal/Polyglot-Keyboard repository on GitHub. It is a 2-layer board of 248 × 76.3 mm with 97 parts on 65 nets, routed with 290 tracks and 1 via.

It is built around the RP2040-ZERO. Its parts include 42 diodes, 42 switches and 1 IC. It belongs with the keyboards and input boards and the RP2040 boards of this library.

Main components

RP2040-ZERO
-- Development Boards & Kits ROHSWaveshareDevelopment Boards & Kits

README

README.md

Polyglot-Keyboard

This is a keyboard made by me that can change between stenography mode and QWERTY mode. It is basically a cheaper version of the Polyglot Keyboard by Steno Keyboards. It uses the QMK Firmware. The PCB was made in KiCad. The case was designed in OnShape. It is quite effective and also very beautiful. The design and shape are customised for my personal use...

BOM

Name	Description	Quantity	Total Cost	Link	Distributor
PCB	Main PCB(includes payment fee)	1	$1.36	https://aivon.com/	AIVON
RP2040 Zero	Main Dev Board(cost includes shipping)	1	$4.73	https://robu.in/product/waveshare-rp2040-zero-without-header/	robu
MX Switches	MX switches(pack of 10 and 4 of them = 40 keys and rest 2 keys given by another HackClubber)	4	$2.86	https://meckeys.com/shop/accessories/keyboard-accessories/key-switches/regular-switch-3pin/?attribute_pa_key-switches=regular-black	meckeys
Keycaps	Blank Keycaps(pack of 5)	9	$8.58	https://meckeys.com/shop/accessories/keyboard-accessories/keycaps/blank/blank-dsa-keycaps-1u/?attribute_pa_variations=black	meckeys
1N4148 Diode	1N4148 Diode(price not include shipping as shipping is shared with the RP2040 Zero)	42	$0.55	https://robu.in/product/1n4148-1w-zener-diode-pack-of-50/	robu
M3x3mm Heatset Insert	M3 X 3mm Brass Threaded Inserts(includes shipping cost)	3	$0.94	https://onlyscrews.in/products/m3-x-3mm-brass-threaded-inserts?variant=49729062273337	onlyscrews
M3x5mm Screws	Screws(shipping grouped with inserts)	3	$0.06	https://onlyscrews.in/products/m3-x-5mm-phillips-pan-head-ss-304-screw-dia-3mm-length-5mm?variant=50614141059385	onlyscrews

Images

Keymap in Stenography mode

Keymap in QWERTY mode

3D Render of the assembled keyboard

Case

Note: You can find the OnShape link here...

PCB Schematic

PCB Design

PCB 3D Render

Category and platform

Keyboards and input RP2040

Project files

Show this board on your page

https://pcbkit.io/boards/SabhyaAggarwal/Polyglot-Keyboard

The board's own page, for a message or a post.

Source

Repository: SabhyaAggarwal/Polyglot-Keyboard
Board file: PCB/Polyglot-Keyboard.kicad_pcb
Commit: 2fd52fb
Licence: Not stated

Parts

Qty	Value	Footprint	References
42	1N4148	Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal	D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +26
42	SW_Push	PCM_marbastlib-mx:SW_MX_1u	SW1, SW2, SW10, SW11, SW12, SW13, SW14, SW15, SW16, SW17, SW18, SW19, SW20, SW21, SW22, SW23 +26
8	LOGO	Polyglot_footprints:20mm_Sabhya	G*, G, G, G, G, G, G, G*
3	MountingHole	MountingHole:MountingHole_3.2mm_M3	H1, H2, H3
1	LOGO	Polyglot_footprints:40mm_Sabhya	G***
1	RP2040-ZERO	Polyglot_footprints:MODULE_RP2040-ZERO	U1

Similar boards

2 layers132.3 × 94.9 mm
Cheapino
tompi/cheapino
An affordable split 36 keys keyboard
59 parts1.2kCC-BY-4.0
2 layers321 × 92.3 mm
Mx40
zzeneg/stront
Split keyboards with 38 or 40 keys, LCD display and Cirque trackpad
181 parts353MIT
2 layers255.9 × 99.3 mm
Zerosprey42
beekeeb/zerosprey42
Zerosprey42 Keyboard is a wired, beginner friendly, choc hotswap, MonoBlockSplit (Unibody), column-staggered, DIY mechanical keyboard.
96 parts140
2 layers146.3 × 69.5 mm
Stress
GroooveBob/Stress
Pocket Arcade Fight Pad
22 parts102MIT
2 layers54 × 64 mm
DonConIOmini
ravinrabbid/DonCon2040
RP2040 based firmware and hardware for DIY Taiko no Tatsujin Drum Controllers
96 parts66MIT
2 layers52 × 50 mm
RP2040-TestPatternGenerator VGA
nmur/RP2040-TestPatternGenerator
A simple test pattern generator running on the RP2040 microcontroller
12 parts64GPL-3.0
2 layers120 × 40 mm
Buinchiez40
ChrisChrisLoLo/bunchiez40
A pocket keyboard that makes use of mouse switches to achieve a miniscule size
90 parts56GPL-3.0
2 layers305.2 × 76.2 mm
Soroka
kapee1/soroka
40% DIY-keyboard with base kit support
126 parts47Unlicense

Questions

How big is the Polyglot Keyboard PCB?

It measures 248 × 76.3 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Polyglot Keyboard use?

97 parts, built around the RP2040-ZERO. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.

Where can I download the Polyglot Keyboard KiCad files?

From the SabhyaAggarwal/Polyglot-Keyboard repository on GitHub, at the commit this page was made from: the board is PCB/Polyglot-Keyboard.kicad_pcb and its schematic PCB/Polyglot-Keyboard.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Polyglot Keyboard design in my own project?

Its repository states no licence, so its author keeps all rights: ask SabhyaAggarwal before reusing the design.