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Bgkeeb

sadekbaroudi·bgkeeb·pcb/choc/bgkeeb.kicad_pcb

Bgkeeb PCB layout, top view — open source AVR/Arduino board by sadekbaroudi

About the Bgkeeb PCB

Bgkeeb is an open source AVR/Arduino PCB design by sadekbaroudi, published on GitHub. It is a 2-layer board measuring 98.4 × 90.7 mm, with 102 components from 9 distinct parts.

Its main chip is the ProMicro, from the AVR/Arduino family. Other key parts include the TRRS. By type, the board carries 74 diodes, 22 switches, 3 ICs, 2 resistors and 1 connector.

It belongs with the keyboards designs in this gallery.

From the project

This is a reversible 100mm x 100mm pcb with support for mx or choc switches (no hotswap), per key led, rotary encoders, and exposes the SDA/SCL/GND/VCC lines in the form of the pimoroni trackball pins (meaning you can add that as well, though the case doesn't support it, so you'l

This is a reversible 100mm x 100mm pcb with support for mx or choc switches (no hotswap), per key led, rotary encoders, and exposes the SDA/SCL/GND/VCC lines in the form of the pimoroni trackball pins (meaning you can add that as well, though the case doesn't support it, so you'll need to devise your own mechanism).

Given the pcb is so small, pcb prototype manufacturers will fab this for very cheap, or even free. As of this writing, nextpcb will ship fab and ship this keyboard 100% for free (in green only). jlcpcb will fab and ship these for $2 (USD).

Bgkeeb, from the project README
From the project README

Main components on the Bgkeeb

ProMicroTRRS

Bgkeeb bill of materials (BOM)

102 components, 9 distinct parts.

QtyPartRefs
1
ProMicro
U1
2
TRRS
U3, U4
1
Pimoroni
J1
18
SW_Push
SW1, SW2, SW3, SW4, SW5, SW6, SW11, SW12 +10
2
RotaryEncoder_Switch
SW7, SW42
2
SW_Push
SW8, SW41
38
1N4148W
D1, D2, D3, D4, D5, D6, D7, D8 +30
36
SK6812MINI-E
D38, D39, D40, D41, D42, D43, D44, D45 +28
2
10k
R1, R4

Bgkeeb design files

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

Bgkeeb: common questions

What microcontroller does the Bgkeeb use?

The Bgkeeb is built around the ProMicro, from the AVR/Arduino family.

How big is the Bgkeeb PCB?

The Bgkeeb measures 98.4 × 90.7 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Bgkeeb?

102 components, from 9 distinct parts. The full bill of materials is listed on this page.

Where can I download the Bgkeeb design files?

From the sadekbaroudi/bgkeeb repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Bgkeeb design in my own project?

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

Can I test firmware for the Bgkeeb 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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