2 layers66.7 × 81 mm Macropad v1.0, the printed circuit board in 3D

Macropad v1.0

3x3 macropad with 2 rotary encoders using STM32

Size: 66.7 × 81 mm
Copper layers: 2
Thickness: 1.6 mm
Parts: 52
Nets: 61
Pads: 206
Tracks, vias: 495, 146
Pours: 9
Routed: Yes
KiCad: KiCad 8.0 (file 20240108)
Created: 24 May 2025
Updated: 13 Oct 2025

Overview

Macropad v1.0 is an open-source printed circuit board by benpegg23, from the benpegg23/ParPad repository on GitHub. It is a 2-layer board of 66.7 × 81 mm with 52 parts on 61 nets, routed with 495 tracks and 146 vias.

It is built around the STM32F072C8T6, USBLC6-2SC6 and 1N4148W. Its parts include 12 switches, 11 capacitors, 10 diodes, 8 resistors and 3 ICs. It belongs with the keyboards and input boards and the STM32 boards of this library.

Main components

README

README.md

ParPad

ParPad is an STM32-based macropad featuring a 3×3 layout and two rotary encoders.

Features

3×3 mechanical key matrix
Dual EC11 rotary encoders with push functionality
Cherry MX switch support
USB-C connectivity
STM32F072C8T6 Microcontroller
Custom firmware (coming soon)

Images

parpadbannersidestuff parpadbanner1 parpad1 parpadbelow parpad_down ParPad_HeadOn ParPad_SideView parpad_layout

Parts

Qty	Value	Footprint	References
9	1N4148W	Diode_SMD:D_SOD-123	D2, D3, D4, D5, D6, D7, D8, D9, D10
9	Keyswitch	ScottoKeebs_MX:MX_PCB_1.00u	S1, S2, S3, S4, S5, S6, S7, S8, S9
6	5.1k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder	R2, R3, R5, R6, R7, R8
5	100nF	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder	C1, C2, C3, C5, C8
4	MountingHole	MountingHole:MountingHole_2.2mm_M2	H1, H2, H3, H4
3	1uF	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder	C7, C10, C11
2	4.7uF	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder	C4, C9
2	LOGO	LOGO	G*, G*
2	Rotary Encoder	Rotary_Encoder:RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm	SW2, SW3
1	10k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder	R1
1	10nF	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder	C6
1	1k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder	R4
1	500mA	Fuse:Fuse_1206_3216Metric_Pad1.42x1.75mm_HandSolder	F1
1	RED	LED_SMD:LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder	D1
1	STM32F072C8T6	Package_QFP:LQFP-48_7x7mm_P0.5mm	U2
1	SW_Push	ScottoKeebs_Components:Button_TL3342	SW1
1	USBLC6-2SC6	Package_TO_SOT_SMD:SOT-23-6	U1
1	USB_C_Receptacle_USB2.0_14P	Connector_USB:USB_C_Receptacle_HRO_TYPE-C-31-M-12	J1
1	XC6206PxxxMR	Package_TO_SOT_SMD:SOT-23-3	U3

Questions

How big is the Macropad v1.0 PCB?

It measures 66.7 × 81 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Macropad v1.0 use?

52 parts, built around the STM32F072C8T6, USBLC6-2SC6 and 1N4148W. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.

Where can I download the Macropad v1.0 KiCad files?

From the benpegg23/ParPad repository on GitHub, at the commit this page was made from: the board is hardware/macropad_v1.0/macropad_v1.0.kicad_pcb and its schematic hardware/macropad_v1.0/macropad_v1.0.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Macropad v1.0 design in my own project?

Its repository states no licence, so its author keeps all rights: ask benpegg23 before reusing the design.

Category and platform

Keyboards and input STM32

Topics

macropad mechanical-keyboard pcb stm32

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/benpegg23-parpad" title="Macropad v1.0 in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe>

A picture

<img src="https://pcbkit.io/embed/boards/benpegg23-parpad.jpg" alt="Macropad v1.0" width="1200" height="900">

A picture that opens the board, for a README

[![Macropad v1.0](https://pcbkit.io/embed/boards/benpegg23-parpad.jpg?size=s)](https://pcbkit.io/boards/benpegg23-parpad)

Source

Repository: benpegg23/ParPad
Board file: hardware/macropad_v1.0/macropad_v1.0.kicad_pcb
Commit: 8e8b188
Licence: Not stated

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