2 layers395 × 123.4 mm Mechanical LP Keyboard, the printed circuit board in 3D

Mechanical LP Keyboard

A Almost Full Sized Mechanical Keyboard

Size: 395 × 123.4 mm
Copper layers: 2
Thickness: 1.6 mm
Parts: 368
Nets: 214
Pads: 1,468
Tracks, vias: 2,789, 746
Pours: 1
Routed: Yes
KiCad: KiCad 9.0 (file 20241229)
Created: 15 Jun 2026
Updated: 21 Jun 2026

Overview

Mechanical LP Keyboard is an open-source printed circuit board by Tirthak-bot, from the Tirthak-bot/Mech-Keeb repository on GitHub. It is a 2-layer board of 395 × 123.4 mm with 368 parts on 214 nets, routed with 2,789 tracks and 746 vias.

It is built around the SK6812MINI-E. Its parts include 181 diodes, 90 capacitors, 90 switches and 1 IC. It belongs with the keyboards and input boards and the RP2040 boards of this library.

Main components

SK6812MINI-E
SMD-40℃~+85℃ 0.6mA 1.78mm 120mcd~240mcd 120° 160mcd~320mcd 1kHz 2.8mm 2000V 3.2mm 3.7V~5.5V 460nm~470nm 515nm~525nm 620nm~625nm 800Kbit/s 815mcd~1275mcd Semi-transparent lens SMD RGB LEDs(Built-in IC) ROHSOPSCO OptoelectronicsRGB LEDs(Built-In IC)

README

README.md

Mech-Keeb

A Almost Full Sized Mechanical Keyboard, Hot Swappable Switches and coded in KMK Firmware!

Making this keyboard because i don't have a *almost full sized decent Keyboard!

Using this is pretty straight forward obviously blehh, just connect it to the computer, flash the firmware once and it should just work like a regular keeb moving forward :)

Schematic

The Schematic was made in KICAD!

Layout

The layout was designed on https://www.keyboard-layout-editor.com/, The firmware hasn't yet been edited to match this layout and is currently sitting with placeholders, I will do it once i get the parts irl. Also the Blank keys will be used as arrow keys and macro keys.

PCB

The PCB was designed in KICAD!

Case

The case was designed in Fusion. PCB to the bottom case and bottom case to top case all is joined by M3 Screws!

Anyways, here is a ugly ahh blue render of the case bleh :3

Firmware

As mentioned above, the firmware is written in python using the KMK Libraries. It will be pushed to the microcontroller using circuit python.

BOM

SR.NO	ITEMS	QUANTITY	UNIT PRICE	TOTAL PRICE	URL
1	PCB	5	$25	$125	https://www.lioncircuits.com/
2	1N4148 1W Zener Diode	100	$0.016	$1.67	https://robu.in/product/1n4148-1w-zener-diode-pack-of-50/
3	1N5819 1W Diode	5	$0.03	$0.15	https://robu.in/product/1n5819-1w-diode-pack-of-30/
4	0402 100nf Capacitors SMD	100	$0.021	$2.1	https://robu.in/product/tcc0402x7r104j500at-cctc-smt-ceramic-capacitors-0402-x7r-104j100nf%C2%B15-0-rated-voltage50v-thickness0-50mm-tape/
5	SK6812 Mini-E	200	$0.13	$27	https://desertcart.in/products/690911592
6	RPI PICO	1	$4.1	$4.1	https://robu.in/product/raspberry-pi-pico/
7	0.96 inch I2C OLED Display	1	$2.12	$2.12	https://robu.in/product/0-96-inch-i2c-iic-oled-lcd-module-4pin-with-vcc-gnd-blue/
8	Cherry MX Style Switches	2 Sets	$16	$32	https://stackskb.com/store/akko-fairy-pro-switch-pack-of-45/
9	EC11 Rotary Encoder	1	-	-	Self Sourced
10	Hot Swap Sockets	90	$0.11	$9.6	https://stackskb.com/store/gateron-hotswap-sockets/
11	Keyboard Stabilizers	1 Set	(4 + 1; 6.25U)	$17	$17
12	Keycaps	1 Set	$14	$14	https://stackskb.com/store/veekos-gradient-keycaps-cherry-profile-135-keys/
13	Assorted M3 Screws	-	-	-	Self Sourced
14	M3 Heat Inserts	-	-	-	Self Sourced
15	Filament Spool(For 3D Printing the case)	1 Roll	$8	$11	https://india.numakers.com/products/pla-metallic#
16	A Set of tweezers	1 Set	$2	$2	https://robu.in/product/anti-static-tweezers-6pcs-set-vetus-bga-esd/
	TOTAL:		$250

Category and platform

Keyboards and input RP2040

Project files

Show this board on your page

https://pcbkit.io/boards/Tirthak-bot/Mech-Keeb

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

Source

Repository: Tirthak-bot/Mech-Keeb
Board file: PCB/Mechanical LP Keyboard.kicad_pcb
Commit: a462ddf
Licence: Not stated

Parts

368

Qty	Value	Footprint	References
91	D	Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal	D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D180 +75
90	C	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder	C1, C2, C10, C11, C12, C13, C14, C15, C16, C17, C18, C19, C20, C21, C100, C101 +74
90	SK6812MINI-E	SK6812 E / MINI E:SK6812MINI-E_fixed	D100, D101, D102, D103, D104, D105, D106, D107, D108, D109, D110, D111, D112, D113, D114, D115 +74
74	SW_Push_45deg	KEYS:MX-Hotswap-1U	SW1, SW2, SW10, SW11, SW12, SW13, SW14, SW15, SW16, SW17, SW19, SW20, SW21, SW22, SW23, SW24 +58
7	SW_Push_45deg	KEYS:MX-Hotswap-1.25U	SW79, SW80, SW81, SW82, SW84, SW85, SW86
4	MountingHole	MountingHole:MountingHole_3.2mm_M3	H1, H2, H4, H5
2	SW_Push_45deg	KEYS:MX-Hotswap-2.25U-ReversedStabilizers	SW65, SW66
2	SW_Push_45deg	KEYS:MX-Hotswap-1.5U	SW36, SW49
1	DM-OLED096-636	OLED:MODULE_DM-OLED096-636	U1
1	LOGO	LOGO	G***
1	RaspberryPi_Pico	Module:RaspberryPi_Pico_Common_Unspecified	A1
1	RotaryEncoder_Switch	Rotary_Encoder:RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm_CircularMountingHoles	SW18
1	SW_Push_45deg	KEYS:MX-Hotswap-6.25U-ReversedStabilizers	SW83
1	SW_Push_45deg	KEYS:MX-Hotswap-2.75U-ReversedStabilizers	SW77
1	SW_Push_45deg	KEYS:MX-Hotswap-1.75U	SW53
1	SW_Push_45deg	KEYS:MX-Hotswap-2U-ReversedStabilizers	SW32

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Questions

How big is the Mechanical LP Keyboard PCB?

It measures 395 × 123.4 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Mechanical LP Keyboard use?

368 parts, built around the SK6812MINI-E. 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 Mechanical LP Keyboard KiCad files?

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

Can I use the Mechanical LP Keyboard design in my own project?

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