2 layers129.5 × 106.7 mm Buttonarray, the printed circuit board in 3D

Buttonarray

This repository contains documentations, pcb designs and fpga designs of the console

Size: 129.5 × 106.7 mm
Copper layers: 2
Thickness: 1.6 mm
Parts: 103
Nets: 99
Pads: 345
Tracks, vias: 890, 31
Pours: 2
Routed: Yes
KiCad: KiCad 6 (file 20211014)
Created: 24 Oct 2022
Updated: 27 Jan 2026

Overview

Buttonarray is an open-source printed circuit board by Mission-DMX, from the Mission-DMX/hardware repository on GitHub. It is a 2-layer board of 129.5 × 106.7 mm with 103 parts on 99 nets, routed with 890 tracks and 31 vias.

It is built around the LM2575-3.3BT and MCP23016-I/SO. Its parts include 36 resistors, 17 diodes, 17 switches, 16 transistors and 4 capacitors.

Main components

README

README.md

hardware

This repository contains documentations, pcb designs and fpga designs of the console

Parts

103

Qty	Value	Footprint	References
17	1N5819	Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal	D1, D2, D3, D4, D5, D6, D7, D8, D10, D11, D12, D13, D14, D15, D16, D17 +1
16	2N2219	Package_TO_SOT_THT:TO-39-3	Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, Q10, Q11, Q12, Q13, Q14, Q15, Q16
16	330 Ohm	Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder	R8, R9, R10, R14, R15, R16, R20, R21, R22, R24, R27, R28, R30, R33, R34, R36
16	3K	Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder	R5, R6, R7, R11, R12, R13, R17, R18, R19, R23, R25, R26, R29, R31, R32, R35
16	SW_Push_LED	Mission_DMX_Footprint_Library:MXOnly-1U	SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8, SW9, SW10, SW11, SW12, SW13, SW14, SW15, SW16
3	10K	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R1, R2, R3
1	100 uF	Capacitor_THT:CP_Radial_D6.3mm_P2.50mm	C3
1	1000uF	Capacitor_THT:CP_Radial_D13.0mm_P5.00mm	C2
1	3.9K	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder	R4
1	330 uH	Inductor_THT:L_Radial_D12.5mm_P7.00mm_Fastron_09HCP	L1
1	330uF	Capacitor_THT:CP_Radial_D10.0mm_P5.00mm	C4
1	33pF	Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder	C1
1	Addr_DIP_SW	Button_Switch_THT:SW_DIP_SPSTx03_Slide_9.78x9.8mm_W7.62mm_P2.54mm	SW17
1	CtrlPins	Connector_IDC:IDC-Header_2x08_P2.54mm_Latch_Vertical	J1
1	LM2575-3.3BT	Package_TO_SOT_THT:TO-220-5_Vertical	U1
1	mcp23016	Mission_DMX_Footprint_Library:mcp23016	GPIOEXP1

The 94 most common of 103 parts.

Questions

How big is the Buttonarray PCB?

It measures 129.5 × 106.7 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Buttonarray use?

103 parts, built around the LM2575-3.3BT and MCP23016-I/SO. 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 Buttonarray KiCad files?

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

Can I use the Buttonarray design in my own project?

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

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/mission-dmx-hardware" title="Buttonarray 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/mission-dmx-hardware.jpg" alt="Buttonarray" width="1200" height="900">

A picture that opens the board, for a README

[![Buttonarray](https://pcbkit.io/embed/boards/mission-dmx-hardware.jpg?size=s)](https://pcbkit.io/boards/mission-dmx-hardware)

Source

Repository: Mission-DMX/hardware
Board file: buttonarray/buttonarray.kicad_pcb
Commit: e24a9b2
Licence: Not stated

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