2 layers317.8 × 133.5 mm Seed75, the printed circuit board in 3D

Seed75

A hand crafted 75% mechanical keyboard

Size: 317.8 × 133.5 mm
Copper layers: 2
Thickness: 1.6 mm
Parts: 172
Nets: 116
Pads: 978
Tracks, vias: 616, 14
Pours: 1
Routed: Yes
KiCad: KiCad 9.0 (file 20241229)
Created: 11 Oct 2025
Updated: 5 Jan 2026

Overview

Seed75 is an open-source printed circuit board by ikrishagarwal, from the ikrishagarwal/Seed75 repository on GitHub, published under the AGPL-3.0 licence. It is a 2-layer board of 317.8 × 133.5 mm with 172 parts on 116 nets, routed with 616 tracks and 14 vias.

Its parts include 83 diodes, 83 switches and 1 connector. It belongs with the keyboards and input boards and the RP2040 boards of this library.

README

README.md

Seed75

A completely hand made 75% mechanical keyboard from PCB to case, even the firmware.

Seed75

Features

75% Layout
Hot Swappable Sockets
Sleep Design
Customizable Push Knob
USB C Port
Detachable Angle Elevation
Sandwich Mount
Wrist Rest

Images

PCB Schematics

PCB

PCB Front Layer

PCB Back Layer

PCB Rendered Front

PCB Top

PCB Rendered Back

PCB Back

Complete Case

Case

Bottom Case

Top Case

Plate

Elevator

Wrist Rest

Knob

BOM

Item	Quantity	Cost (USD)*	Purchase Link
1N4148 Diodes	90 Pack	1.52	https://stackskb.com/store/1n4148-through-hole-diode/
Akko Bittersweet Switch	90 Pack	33.40	https://stackskb.com/store/akko-bittersweet-switch-pack-of-45/
EC11 Rotary Encoder	1	0.43	https://www.flyrobo.in/ec11-rotary-encoder-half-shaft-handle-potentiometer-15mm
Orpheus Pico	1		Hack Club
Gateron Hotswap Sockets	90 Pack	10.00	https://stackskb.com/store/gateron-hotswap-sockets/
Durock v2 Stabilizers Set	1	17.98	https://stackskb.com/store/durock-clear-screw-in-stabilizers-v2/?attribute_combination=4%2B1+Set&attribute_spacebar-size=6.25U
Keycap Set	1	22.21	https://curiositycaps.in/products/camp-picnic-xvx-p-profile-dye-sub-doubleshot-combination-keycap
M3x20 Hex CSK Screws	6x2	0.20	https://omrook.com/ss-allen-csk-m3-x-20mm-dia-3mm-length-20mm-stainless-steel-ss202-allen-socket-countersunk-screws/
M3x6 Hex CSK Screws	4x2	0.05	https://omrook.com/ss-allen-csk-m3-x-6mm-dia-3mm-length-6mm-stainless-steel-ss202-allen-socket-countersunk-screws/
M3 X 3mm Brass Threaded Inserts	10x2	0.83	https://omrook.com/m3-x-4-brass-threaded-inserts-nut-50pc/
Bottom Case, Top Case, Plate, Knob, Elevator, Wrist Rest	1		(3D Printed)
PCB	1	56.87	https://www.pcbpower.com/

Cost is as of 01/01/2026

Software Used

KiCAD
Fusion 360

Author

Krish

License

This project is licensed under the AGPL-3.0 License.

Parts

172

Qty	Value	Footprint	References
83	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 +67
71	SW_Push	CF_Switch_MX_Hotswap:SW_Hotswap_Kailh_MX_Plated_1.00u_With_Switch	SW1, SW2, SW10, SW11, SW12, SW13, SW14, SW16, SW17, SW18, SW19, SW20, SW21, SW22, SW23, SW24 +55
3	SW_Push	CF_Switch_MX_Hotswap:SW_Hotswap_Kailh_MX_Plated_1.25u_With_Switch	SW74, SW75, SW76
3	Stabilizer_Cherry_MX_2.00u	PCM_Mounting_Keyboard_Stabilizer:Stabilizer_Cherry_MX_2.00u	ST29, ST58, ST60
2	SW_Push	CF_Switch_MX_Hotswap:SW_Hotswap_Kailh_MX_Plated_2.25u_With_Switch	SW58, SW60
2	SW_Push	CF_Switch_MX_Hotswap:SW_Hotswap_Kailh_MX_Plated_1.75u_With_Switch	SW46, SW71
2	SW_Push	CF_Switch_MX_Hotswap:SW_Hotswap_Kailh_MX_Plated_1.50u_With_Switch	SW31, SW44
1	Conn_01x06_Pin	Connector_Wago:Wago_734-136_1x06_P3.50mm_Vertical	J1
1	RaspberryPi_Pico	ScottoKeebs_MCU:Raspberry_Pi_Pico	A1
1	RotaryEncoder_Switch	ScottoKeebs_Scotto:Encoder_EC11_MX_Combo	SW15
1	SW_Push	CF_Switch_MX_Hotswap:SW_Hotswap_Kailh_MX_Plated_2.00u_With_Switch	SW29
1	SW_Push	CF_Switch_MX_Hotswap:SW_Hotswap_Kailh_MX_Plated_6.25u_With_Switch	SW77
1	Stabilizer_Cherry_MX_6.25u	PCM_Mounting_Keyboard_Stabilizer:Stabilizer_Cherry_MX_6.25u	ST77

Questions

How big is the Seed75 PCB?

It measures 317.8 × 133.5 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Seed75 use?

172 parts. 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 Seed75 KiCad files?

From the ikrishagarwal/Seed75 repository on GitHub, at the commit this page was made from: the board is PCB/seed75.kicad_pcb and its schematic PCB/seed75.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Seed75 design in my own project?

Its repository publishes it under the AGPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).

Category and platform

Keyboards and input RP2040

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/ikrishagarwal-seed75" title="Seed75 in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe>

A picture

<img src="https://pcbkit.io/embed/boards/ikrishagarwal-seed75.jpg" alt="Seed75" width="1200" height="900">

A picture that opens the board, for a README

[![Seed75](https://pcbkit.io/embed/boards/ikrishagarwal-seed75.jpg?size=s)](https://pcbkit.io/boards/ikrishagarwal-seed75)

Source

Repository: ikrishagarwal/Seed75
Board file: PCB/seed75.kicad_pcb
Commit: 25d6d88
Licence: AGPL-3.0

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