HardLabs

Meimei

luteron6·meimei·PCB/meimei.kicad_pcb

Meimei PCB layout, top view — open source board by luteron6

About the Meimei PCB

Meimei is an open source PCB design by luteron6, published on GitHub under the MIT license. It is a 2-layer board measuring 288.1 × 135.7 mm, with 150 components from 11 distinct parts.

Other key parts include the Nice_Nano_V2. By type, the board carries 75 switches, 74 diodes and 1 IC.

It belongs with the keyboards and iot & wireless designs in this gallery.

From the project

a 75% keyboard

It's suggested to run ZMK as the firmware for bluetooth, so I learned ZMK for this keyboard. Previously I've used QMK, but ZMK is quite different as it uses a Github Actions workflow to compile the firmware file. The firmware for this keyboard lives in this repository. Simply go to the Actions tab, open the most recent workflow, download the firmware Artifact, unzip the firmware, and flash it to the nice!nano.

Meimei, from the project README
From the project README

Main components on the Meimei

Nice_Nano_V2

Meimei bill of materials (BOM)

150 components, 11 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
Nice_Nano_V2
U1
59
SW_Push_45deg
SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 +51
2
SW_Push_45deg
SW27, SW52
1
SW_Push_45deg
SW40
2
SW_Push_45deg
SW53, SW64
1
SW_Push_45deg
SW65
7
SW_Push_45deg
SW66, SW67, SW68, SW73, SW74, SW75, SW76
1
SW_Push_45deg
SW69
1
RotaryEncoder_Switch
SW70
1
SW_Push_45deg
SW77
74
D
D1, D2, D3, D4, D5, D6, D7, D8 +66

Meimei design files

The KiCad project lives in the luteron6/meimei repository on GitHub; these links point at the commit this page was built from.

Meimei: common questions

How big is the Meimei PCB?

The Meimei measures 288.1 × 135.7 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Meimei?

150 components, from 11 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 Meimei design files?

From the luteron6/meimei 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 Meimei design in my own project?

Yes, under the terms of its MIT license, which luteron6 chose for the repository.

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