HardLabs

Macrocat

catmunch·macrocat·pcb/macrocat.kicad_pcb

Macrocat PCB layout, top view — open source AVR/Arduino board by catmunch
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About the Macrocat PCB

Macrocat is an open source AVR/Arduino PCB design by catmunch, published on GitHub under the MIT license. It is a 2-layer board measuring 78.7 × 97.3 mm, with 52 components from 16 distinct parts.

Its main chip is the ATMEGA32U4-MU, from the AVR/Arduino family. By type, the board carries 16 diodes, 7 capacitors, 6 resistors, 1 IC, 1 crystal and 1 connector.

It belongs with the keyboards designs in this gallery.

From the project

A cat like macro keyboard/numpad.

Macrocat, from the project README
From the project README

Main components on the Macrocat

ATMEGA32U4-MU

Macrocat bill of materials (BOM)

52 components, 16 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ATMEGA32U4-MU
ATmega32U4-M
U1
1
16M
Y1
1
USB-C Connector
J1
1
500mA
F1
1
RotaryEncoder_Switch
KNOB1
16
MX-NoLED
MX1, MX2, MX3, MX4, MX5, MX6, MX7, MX8 +8
1
SW_Push
RESET1
1
OLED
OL1
16
1N4148W
D1, D2, D3, D4, D5, D6, D7, D8 +8
3
0.1uF
C1, C4, C6
2
22pF
C2, C3
1
1uF
C5
1
10uF
C7
2
22
R1, R2
2
10k
R3, R4
2
5.1K
R5, R6

Macrocat design files

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

Macrocat: common questions

What microcontroller does the Macrocat use?

The Macrocat is built around the ATMEGA32U4-MU, from the AVR/Arduino family.

How big is the Macrocat PCB?

The Macrocat measures 78.7 × 97.3 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Macrocat?

52 components, from 16 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 Macrocat design files?

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

Can I use the Macrocat design in my own project?

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

Can I test firmware for the Macrocat 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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