HardLabs

Macr0

Clewsy·macr0·hardware/pcb/macr0.kicad_pcb

Macr0 PCB layout, top view — open source AVR/Arduino board by Clewsy

About the Macr0 PCB

Macr0 is an open source AVR/Arduino PCB design by Clewsy, published on GitHub under the MIT license. It is a 2-layer board measuring 44.5 × 44.5 mm, with 24 components from 15 distinct parts.

Its main chip is the ATmega32U4, from the AVR/Arduino family. By type, the board carries 10 resistors, 5 switches, 4 capacitors, 2 connectors, 1 IC and 1 transistor.

From the project

Mirrored from gitlab.

4-button HID compliant USB macro keypad.

A bunch of extra info can be found at [clews.pro][linkclewsmacr0].

Goals for this project: - [X] HID compliant USB peripheral using an ATmega32U4 microcontroller. - [X] Keys will be mechanical Gateron switches - these are pin-compatible Cherry MX clones. - [X] Keys will all be LED back-lit. - [X] Back-light illumination will be adjustable. - [X] Connectivity (and power) will be via a USC-C connector, configured for USB 2.0.

Main components on the Macr0

ATmega32U4

Macr0 bill of materials (BOM)

24 components, 15 distinct parts.

QtyPartRefs
1
ATmega32U4
U1
1
PNP
Q1
1
16MHz
Y1
1
usb-c
J1
1
AVR-ISP
J2
1
DIMMER
S0
4
SW_Push_LED
S1, S2, S3, S4
2
22pF
C1, C2
1
1uF
C3
1
10uF
C4
1
10k
R01
2
5k1
R02, R03
2
22
R04, R05
1
7k5
R6
4
50
R07, R08, R09, R10

Macr0 design files

The KiCad project lives in the Clewsy/macr0 repository on GitHub; these links point at the commit this page was built from.

Macr0: common questions

What microcontroller does the Macr0 use?

The Macr0 is built around the ATmega32U4, from the AVR/Arduino family.

How big is the Macr0 PCB?

The Macr0 measures 44.5 × 44.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Macr0?

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

Where can I download the Macr0 design files?

From the Clewsy/macr0 repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Macr0 design in my own project?

Yes, under the terms of its MIT license, which Clewsy chose for the repository.

Can I test firmware for the Macr0 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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