HardLabs

CoquiKeyboard

coquizen·CoquiKeyboard·pcb/CoquiKeyboard.kicad_pcb

CoquiKeyboard PCB layout, top view — open source AVR/Arduino board by coquizen

About the CoquiKeyboard PCB

CoquiKeyboard is an open source AVR/Arduino PCB design by coquizen, published on GitHub. It is a 2-layer board measuring 307.2 × 79 mm, with 128 components from 28 distinct parts.

Its main chip is the ATMEGA32U4-AU, from the AVR/Arduino family. By type, the board carries 56 LEDs, 54 diodes, 7 capacitors, 6 resistors, 1 IC and 1 crystal.

It belongs with the keyboards designs in this gallery.

From the project

This is a 40% keyboard with a Clueboard-like layout. Much like the coqui frog, it is small but sings loudly.

- Table of Contents - About The Project - Built With - Getting Started - Prerequisites - Installation - Usage - Contributing - License - Contact - Acknowledgements

Distributed under the GPL License. See LICENSE for more information.

[license-shield]: https://img.shields.io/badge/license-GPL-blue.svg?style=flat-square [license-url]: https://choosealicense.com/licenses/mit [keyboard-layout]: https://i.imgur.com/pRL0Bjm.png\ [keyboard-layout2]: https://i.imgur.com/WaaT3K5.png

CoquiKeyboard, from the project README
From the project README

Main components on the CoquiKeyboard

ATMEGA32U4-AU

CoquiKeyboard bill of materials (BOM)

128 components, 28 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ATMEGA32U4-AU
ATmega32U4-AU
U1
1
16MHZ
16MHz
Y1
1
USB_C_Plug_USB2.0
P1
1
500MA
500mA
F1
1
SW_Push
SW1
36
MX-1U
MX1, MX4, MX5, MX6, MX7, MX9, MX10, MX11 +28
5
MX-1U
MX-1.25U
MX2, MX8, MX15, MX36, MX40
1
MX-1U
MX-1.75U
MX3
4
MX-1.25U
MX-1U
MX16, MX42, MX45, MX50
1
MX-1U
MX-2.25U
MX19
2
MX-1.75U
MX-1U
MX28, MX30
1
MX-1U
MX-2.75U
MX29
1
MX-1.25U
MX41-1
1
MX-1U
MX42-1
1
MX-1.25U
MX-1.75U
MX46
1
MX-2.25U
MX-1U
MX47
1
MX-2.75U
MX-1U
MX48
1
MX-1.25U
MX49
54
D
D1, D2, D3, D4, D5, D6, D7, D8 +46
3
0.1UF
0.1uF
C1, C2, C3
Show 8 more
QtyPartRefs
1
10UF
10uF
C4
2
22PF
22pF
C5, C6
1
1UF
1uF
C7
1
10K
5k1
R1
1
5k1
R2
1
22
R3
1
10K
22
R4
2
10k
R5, R6

CoquiKeyboard design files

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

CoquiKeyboard: common questions

What microcontroller does the CoquiKeyboard use?

The CoquiKeyboard is built around the ATMEGA32U4-AU, from the AVR/Arduino family.

How big is the CoquiKeyboard PCB?

The CoquiKeyboard measures 307.2 × 79 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the CoquiKeyboard?

128 components, from 28 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 CoquiKeyboard design files?

From the coquizen/CoquiKeyboard repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the CoquiKeyboard design in my own project?

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

Can I test firmware for the CoquiKeyboard 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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