2 layers48.3 × 40.6 mm Macropad, the printed circuit board in 3D

Macropad

Size: 48.3 × 40.6 mm
Copper layers: 2
Thickness: 1.6 mm
Parts: 45
Nets: 44
Pads: 206
Tracks, vias: 466, 140
Pours: 1
Routed: Yes
KiCad: KiCad 9.0 (file 20241229)
Created: 18 Apr 2025
Updated: 13 May 2025

Overview

Macropad is an open-source printed circuit board by CodeOnSunday, from the CodeOnSunday/MacroPad-HW repository on GitHub. It is a 2-layer board of 48.3 × 40.6 mm with 45 parts on 44 nets, routed with 466 tracks and 140 vias.

It is built around the MAX490ESA+, MCP2551-I/SN-HG and RS485, with the AP62250WU among its other parts. Its parts include 15 capacitors, 11 resistors, 10 connectors, 4 ICs and 2 switches. It belongs with the keyboards and input boards and the STM32 boards of this library.

Main components

Parts

Qty	Value	Footprint	References
8	100n	Capacitor_SMD:C_0603_1608Metric	C1, C3, C4, C5, C8, C9, C13, C21
4	10k	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R1, R7, R15, R16
3	120	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R4, R6, R9
2	22uF	Capacitor_SMD:C_1206_3216Metric	C6, C7
2	4.7u	Capacitor_SMD:C_1206_3216Metric	C10, C14
2	Reset	Button_Switch_SMD:SW_SPST_B3U-1000P	SW10, SW11
1	0	Resistor_SMD:R_0603_1608Metric	R5
1	10k	Resistor_SMD:R_0603_1608Metric	R3
1	10n	Capacitor_SMD:C_0603_1608Metric	C11
1	1k	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R17
1	1u	Capacitor_SMD:C_1206_3216Metric	C12
1	2.2uH	Inductor_SMD:L_Taiyo-Yuden_NR-50xx	L1
1	22u	Capacitor_SMD:C_1206_3216Metric	C2
1	31.6k	Resistor_SMD:R_0603_1608Metric	R2
1	AP62250WU	Package_TO_SOT_SMD:TSOT-23-6	U1
1	CAN	Library:Conn_Edge_x04	J9
1	Extra	Library:Conn_Edge_x08	J7
1	Keyboard 1	Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Vertical	J11
1	Keyboard 1	Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Vertical_SMD_Pin1Left	J4
1	Keyboard 2	Connector_PinHeader_2.54mm:PinHeader_1x07_P2.54mm_Vertical_SMD_Pin1Left	J12
1	Keyboard 2	Connector_PinHeader_2.54mm:PinHeader_1x07_P2.54mm_Vertical	J13
1	LOGO	LOGO	G***
1	MAX490E	Package_SO:SOIC-8_3.9x4.9mm_P1.27mm	U3
1	MCP2551-I-SN	Package_SO:SOIC-8_3.9x4.9mm_P1.27mm	U4
1	PNP	Package_TO_SOT_SMD:SOT-23	Q1
1	RS485	Library:Conn_Edge_x06	J6
1	STM32F042K6Tx	Package_QFP:LQFP-32_7x7mm_P0.8mm	U2
1	SWD	Library:Conn_Edge_x05	J1
1	UART	Library:Conn_Edge_x04	J5
1	USB_A	Connector_USB:USB_Micro-B_Wuerth_629105150521_CircularHoles	J8

Questions

How big is the Macropad PCB?

It measures 48.3 × 40.6 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Macropad use?

45 parts, built around the MAX490ESA+, MCP2551-I/SN-HG, RS485 and AP62250WU. 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 KiCad files?

From the CodeOnSunday/MacroPad-HW repository on GitHub, at the commit this page was made from: the board is Mainboard/macropad.kicad_pcb and its schematic Keyboard/keyboard.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Macropad design in my own project?

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

Category and platform

Keyboards and input STM32

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/codeonsunday-macropad-hw-macropad" title="Macropad 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/codeonsunday-macropad-hw-macropad.jpg" alt="Macropad" width="1200" height="900">

A picture that opens the board, for a README

[![Macropad](https://pcbkit.io/embed/boards/codeonsunday-macropad-hw-macropad.jpg?size=s)](https://pcbkit.io/boards/codeonsunday-macropad-hw-macropad)

Source

Repository: CodeOnSunday/MacroPad-HW
Board file: Mainboard/macropad.kicad_pcb
Commit: 9e0bdc7
Licence: Not stated

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