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What is it?

A 30%-sized, compact, on-the-go mechanical keyboard PCB for keyboard enthusiasts.

  • Ortholinear
  • 32 keys (2U space bar or 1U + 1U configurations)
  • Atmega32u4 MCU
  • SMD components
  • 7 + 10 underglow RGB LEDs
  • QMK supported



Download official release

Go to the release page and download miuni32-default.hex file.

Compile from source

Download the official qmk-firmware source code before proceeding.


Simply run the following from the top directory:

$ make miuni32
QMK Firmware 0.6.211              
Making miuni32 with keymap default [OK]        

You will find miuni32_default.hex in your qmk_firmware directory!



First, hit the reset button on Miuni32. Then run the following commands from the directory you stored the firmware:

sudo dfu-programmer atmega32u4 erase
sudo dfu-programmer atmega32u4 flash miuni32_default.hex
sudo dfu-programmer atmega32u4 start

Bill of Materials

Comment Description Designator Quantity Octopart URL
18 pF 18 pF, 0603 C1, C2 2
0.1 µF 0.1 uF, 0603 C3, C4, C5, C8, C9, C10, C11, C12, C13, C14, C15, C16, C17, C18, C19, C20, C21, C22, C23, C24 20
1 µF 1µF, 0603 C6, C7 2
1N4148W 2 A 100 V 400 mW - SOD-123 D1_1, D1_2, D1_3, D1_4, D1_5, D1_6, D1_7, D1_8, D1_9, D1_10, D1_11, D2_1, D2_2, D2_3, D2_4, D2_5, D2_6, D2_7, D2_8, D2_9, D2_10, D2_11, D3_1, D3_2, D3_3, D3_4, D3_5, D3_6, D3_7, D3_8, D3_9, D3_10, D3_11 33
22 Ohm 22 Ohm, 0603 R1, R2 2
1 k Ohm 1 k Ohm, 0603 R3 1
470 Ohm 470 Ohm, 0603 R4, R5 2
0 Ohm 0 Ohm 0603 RGB_2ND or RGB_ext (default) 1
Omron XM7D-0512 USB Connector; Type: mini-B-type socket; Number of Contacts: 5; Terminal Shape: Right-angle DIP terminals J1 1
Texas Instruments ESD122DMYR ESD Suppressors TVS 3-Pin X2SON T/R 1
TE Connectivity / AMP 8-1437565-0 Switch Tactile OFF (ON) SPST Round Button Gull Wing 0.02A 15VDC 1.57N SMD T/R SW1 1
WS2812B RGB LED U0, U1, U2, U3, U4, U5, U6, U7, U8, U9, U10, U11, U12, U13, U14, U15, U16 17
TPD1E10B06DPYR ESD in 0402 Package 1 Channel, -40 to +125 degC, 2-pin X2SON (DPY) U17 1
TXC 7B-16.000MAAJ-T CRYSTAL 16.000MHZ 18PF SMD Y1 1