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Macropad

hujohn1·keyboardstuff·Macropad/macropad.kicad_pcb

Macropad

About the Macropad PCB

Macropad is an open source AVR/Arduino PCB design by hujohn1, published on GitHub. It is a 2-layer board, with 45 components from 25 distinct parts.

Its main chip is the ATmega32U4-M, from the AVR/Arduino family. Other key parts include the USBLC6-2SC6. By type, the board carries 13 capacitors, 9 resistors, 6 switches, 5 diodes, 4 LEDs and 2 ICs.

It belongs with the keyboards designs in this gallery.

From the project

record of my mechanical keyboard builds

v1: Jul 28, 2026 Changed resistors from 5k to 5.1k Added status LED Changed multiple global labels to net labels Rewired WS2812s Changed resistor and capacitor namings

Main components on the Macropad

ATmega32U4-MUSBLC6-2SC6

Macropad bill of materials (BOM)

45 components, 25 distinct parts.

QtyPartRefs
1
ATmega32U4-M
U1
1
USBLC6-2SC6
U2
1
Crystal_GND24
Y2
1
AVR-ISP-6
J2
1
USB_C_Receptacle_USB2.0_14P
J3
1
Polyfuse
F1
1
RotaryEncoder_Switch
SW1
1
SW_Push
SW3
4
SW_Push
SW6, SW7, SW8, SW9
1
TP_GND
TP1
1
TP_VCC_FUSED
TP2
4
WS2812_2020
LED1, LED2, LED3, LED4
1
STATUS
D1
4
SOD-123
D8, D9, D10, D11
2
22pF
C1, C2
5
0.1u
C3, C5, C6, C8, C9
1
1uF
C4
1
10u
C7
4
100nF
C10, C11, C12, C13
1
10k
R1
Show 5 more
QtyPartRefs
2
22
R2, R3
2
5k1
R4, R5
2
5k
R6, R7
1
330
R8
1
2k2
R9

Macropad design files

The KiCad project lives in the hujohn1/keyboardstuff repository on GitHub; these links point at the commit this page was built from.

Macropad: common questions

What microcontroller does the Macropad use?

The Macropad is built around the ATmega32U4-M, from the AVR/Arduino family.

How big is the Macropad PCB?

The Macropad has 2 copper layers and is 1.6 mm thick.

How many components are on the Macropad?

45 components, from 25 distinct parts. The full bill of materials is listed on this page.

Where can I download the Macropad design files?

From the hujohn1/keyboardstuff repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Macropad design in my own project?

The repository has no license, so all rights stay with hujohn1. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Macropad 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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