HardLabs

Keyboard3-L

e04·will60·pcb/L/Keyboard3-L.kicad_pcb

Keyboard3-L PCB layout, top view — open source AVR/Arduino board by e04

About the Keyboard3-L PCB

Keyboard3-L is an open source AVR/Arduino PCB design by e04, published on GitHub. It is a 2-layer board measuring 130.8 × 111 mm, with 78 components from 15 distinct parts.

Its main chip is the ATmega32U4-A, from the AVR/Arduino family. By type, the board carries 31 switches, 31 diodes, 7 resistors, 5 capacitors, 2 connectors and 1 IC.

It belongs with the keyboards designs in this gallery.

From the project

DIY Keyboard

Will60 is a mechanical keyboard that has below feature:

- Splited - 60 Keys - Kailh Choc V1 - USB Type-C - ATmega32u4 - Plateless - Thinnest (with Kailh Choc V1)

There are KiCad project data and QMK firmware in this repo.

Keyboard3-L, from the project README
From the project README

Main components on the Keyboard3-L

ATmega32U4-A

Keyboard3-L bill of materials (BOM)

78 components, 15 distinct parts.

QtyPartRefs
1
ATmega32U4-A
U1
1
CSTCE16M0V53-R0
Y1
1
PJ-313D
J1
1
USB_C_Receptacle_USB2.0
J2
30
SW_Push
SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 +22
1
SW_Push
SW31
30
1N4148W
D1, D2, D3, D4, D5, D6, D7, D8 +22
1
LED
D31
3
0.1u
C1, C2, C3
1
4.7u
C4
1
1u
C5
2
10k
R1, R4
2
22
R2, R3
1
1k
R5
2
5.1k
R6, R7

Keyboard3-L design files

The KiCad project lives in the e04/will60 repository on GitHub; these links point at the commit this page was built from.

Keyboard3-L: common questions

What microcontroller does the Keyboard3-L use?

The Keyboard3-L is built around the ATmega32U4-A, from the AVR/Arduino family.

How big is the Keyboard3-L PCB?

The Keyboard3-L measures 130.8 × 111 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Keyboard3-L?

78 components, from 15 distinct parts. The full bill of materials is listed on this page.

Where can I download the Keyboard3-L design files?

From the e04/will60 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Keyboard3-L design in my own project?

The repository has no license, so all rights stay with e04. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Keyboard3-L 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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