HardLabs

MechanicalKeyboard75

NotXander4211·MechanicalKeyboard75·PCB/75Mechanical.kicad_pcb

MechanicalKeyboard75 PCB layout, top view — open source RP2040/RP2350 board by NotXander4211

About the MechanicalKeyboard75 PCB

MechanicalKeyboard75 is an open source RP2040/RP2350 PCB design by NotXander4211, published on GitHub. It is a 2-layer board measuring 290.5 × 161.9 mm, with 169 components from 14 distinct parts.

Its main chip is the RaspberryPi_Pico, from the RP2040/RP2350 family. By type, the board carries 83 diodes, 77 switches, 7 capacitors, 1 module and 1 resistor.

It belongs with the keyboards designs in this gallery.

From the project

Main repository for my custom 75% mechanical keyboard

This project is a mechanical keyboard that I want to be able to use daily! It can be used as a standard keyboard with a knob. It can also do anything you can dream of, as long as the firmware exists!

Fully created and designed by Lucas Escobar

I decided to create a mechanical keyboard because it seems like a somewhat beginner friendly project that still will challenge you. It also happens that I currently don't own any mechanical keyboards, so I wanted to make one! Electrical circuits and programming has always facinated me, but I never really knew how, or had the means to do it. After I…

Main components on the MechanicalKeyboard75

RaspberryPi_Pico

MechanicalKeyboard75 bill of materials (BOM)

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

QtyPartRefs
1
RaspberryPi_Pico
A1
60
SW_Push
SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 +52
1
SW_Push
SW28
2
SW_Push
SW29, SW42
1
SW_Push
SW43
2
SW_Push
SW55, SW56
1
SW_Push
SW67
7
SW_Push
SW68, SW69, SW70, SW72, SW73, SW74, SW75
1
SW_Push
SW71
2
RotaryEncoder_Switch
SW76, SW77
75
1N4148
D1, D2, D3, D4, D5, D6, D7, D8 +67
8
SK6812MINI
D76, D77, D78, D79, D80, D81, D82, D83
7
0.1uF
C1, C3, C4, C5, C6, C7, C8
1
330
R1

MechanicalKeyboard75 design files

The KiCad project lives in the NotXander4211/MechanicalKeyboard75 repository on GitHub; these links point at the commit this page was built from.

MechanicalKeyboard75: common questions

What microcontroller does the MechanicalKeyboard75 use?

The MechanicalKeyboard75 is built around the RaspberryPi_Pico, from the RP2040/RP2350 family.

How big is the MechanicalKeyboard75 PCB?

The MechanicalKeyboard75 measures 290.5 × 161.9 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the MechanicalKeyboard75?

169 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 MechanicalKeyboard75 design files?

From the NotXander4211/MechanicalKeyboard75 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 MechanicalKeyboard75 design in my own project?

The repository has no license, so all rights stay with NotXander4211. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the MechanicalKeyboard75 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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