HardLabs

0xCB-micro

0xCB-dev·0xCB-micro·rev1.0/micro.kicad_pcb

0xCB-micro PCB layout, top view — open source AVR/Arduino board by 0xCB-dev
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About the 0xCB-micro PCB

0xCB-micro is an open source AVR/Arduino PCB design by 0xCB-dev, published on GitHub under the Custom license license. It is a 4-layer board measuring 25 × 29.6 mm, with 29 components from 18 distinct parts.

Its main chip is the ATMEGA32U4, from the AVR/Arduino family. Other key parts include the USBLC6-2SC6. By type, the board carries 10 capacitors, 9 resistors, 2 ICs, 2 diodes, 1 transistor and 1 crystal.

It belongs with the keyboards designs in this gallery.

From the project

1% - 65% keyboard controller with RGB underglow and a backlight driver

Licence | OSHWA :-------------------------:|:-------------------------: | [](https://certification.oshwa.org/de000115.html)

qmk clone cd qmkfirmware export LTO=Y To go to bootloader hold the ESC key (row0 col0 / the key on the PCB) while plugging in (or short RST from the ISP header to GND). make 0xcb/micro:via:flash

You can use the humanpnp to easily place components.

0xCB-micro, from the project README
From the project README

Main components on the 0xCB-micro

USBLC6-2SC6ATMEGA32U4

0xCB-micro bill of materials (BOM)

29 components, 18 distinct parts.

QtyPartRefs
1
USBLC6-2SC6
U1
1
ATMEGA32U4
U2
1
FDS9926A
Q1
1
16MHz
Y1
1
USB
J1
1
1A
F1
1
MX-LED
MX1
1
1N4148WT
D1
1
WS2812B
D2
1
600R
FB1
1
10u
C1
5
100n
C2, C3, C4, C5, C10
2
1u
C6, C9
2
22p
C7, C8
2
5.1k
R1, R2
2
22
R3, R4
3
10k
R5, R6, R8
2
330
R7, R9

0xCB-micro design files

The KiCad project lives in the 0xCB-dev/0xCB-micro repository on GitHub; these links point at the commit this page was built from.

0xCB-micro: common questions

What microcontroller does the 0xCB-micro use?

The 0xCB-micro is built around the ATMEGA32U4, from the AVR/Arduino family.

How big is the 0xCB-micro PCB?

The 0xCB-micro measures 25 × 29.6 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the 0xCB-micro?

29 components, from 18 distinct parts. The full bill of materials is listed on this page.

Where can I download the 0xCB-micro design files?

From the 0xCB-dev/0xCB-micro repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the 0xCB-micro design in my own project?

It is published under Custom license, which limits how it may be reused; read the license before building on it.

Can I test firmware for the 0xCB-micro without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug AVR/Arduino firmware against it before you order a PCB.

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