4 layers

Mixer

Control Surface for Behringer X18

Copper layers: 4
Thickness: 1.6 mm
Parts: 14
Nets: 52
Pads: 170
Tracks, vias: 52, 0
Routed: Yes
KiCad: KiCad 9.0 (file 20241229)
Created: 16 Jul 2024
Updated: 18 Mar 2026

Overview

Mixer is an open-source printed circuit board by jchilds0, from the jchilds0/x18-surface repository on GitHub, published under the GPL-3.0 licence. It is a 4-layer board with 14 parts on 52 nets, routed with 52 tracks and 0 vias.

It is built around the MAX7219M. Its parts include 2 ICs and 2 switches. It belongs with the audio and music boards of this library.

Main components

MAX7219M
SOP-24-300mil10MHz 150uA 3-Wire Serial Interface 30mA 320mA 4V~5.5V 8 Segment x 8 Digit Built-in display RAM、PWM dimming、BCD input latch function、Power-up display blanking、Lamp test function、Cascadable function SOP-24-300mil Digital Tube Drivers ROHSHGSEMIDigital Tube Drivers

README

README.md

x18-surface

Control Surface for Behringer X18

Parts

Qty	Value	Footprint	References
4	HDSP-4832_2	Display:HDSP-4832	LowerLED1, LowerLED2, UpperLED1, UpperLED2
4	SW_SPST_LED	mixer:SW_SPST_LED_9mm	mute1, mute2, solo1, solo2
2	~	mixer:RotaryEncoder	SW9, SW10
2	~	mixer:oled	oled1, oled2
1	MAX7219	Package_DIP:DIP-24_W7.62mm	U6
1	MCP23017_SP	Package_DIP:DIP-28_W7.62mm	U4

Questions

What parts does the Mixer use?

14 parts, built around the MAX7219M. 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 Mixer KiCad files?

From the jchilds0/x18-surface repository on GitHub, at the commit this page was made from: the board is kicad/mixer.kicad_pcb and its schematic kicad/buttons.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Mixer design in my own project?

Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).

Category and platform

Audio and music

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/jchilds0-x18-surface" title="Mixer 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/jchilds0-x18-surface.jpg" alt="Mixer" width="1200" height="900">

A picture that opens the board, for a README

[![Mixer](https://pcbkit.io/embed/boards/jchilds0-x18-surface.jpg?size=s)](https://pcbkit.io/boards/jchilds0-x18-surface)

Source

Repository: jchilds0/x18-surface
Board file: kicad/mixer.kicad_pcb
Commit: 9e8701c
Licence: GPL-3.0

Similar boards

2 layers181 × 97 mm
OpenDeck r3.1.2
shanteacontrols/OpenDeck
A platform for building interactive control and sensing devices using MIDI and OSC built with Zephyr RTOS.
262 parts960Apache-2.0
2 layers482.6 × 35.6 mm
Precision clock
mitxela/PrecisionClock-Hardware
PCB design for the Precision Clock Mk III
49 parts41
2 layers85.6 × 41 mm
Hl alyx glove
StarGate01/hl-alyx-glove
Firmware and Hardware for a Half-Life: Alyx Gravity Glove Replica
38 parts21MIT
2 layers191.8 × 48.4 mm
Matrixclock gnm-19881-bsg
WiseLord/matrixclock
4x1 LED matrix 8x8 clock
35 parts16
2 layers542.3 × 27.3 mm
Glowboardng
Eigenbaukombinat/glowboard
The Glowboard Plotter plots images using 64 UV LEDs attached in a line moved over a 120cmx60cm glow-in-the-dark sheet by a stepper.
69 parts6
2 layers70 × 50.1 mm
Doom clock
stecman/avr-doomclock
GPS clock on an ATTiny with MAX7219 7-segment driver
24 parts5MIT
2 layers91.4 × 119.4 mm
Painel pcb1
ArqueologiaDigital/PatinhoFeio_Painel_KICAD

63 parts4
2 layers142.2 × 64.4 mm
Fcu mb
VirtualGit/HomeCockpitA320
A320 Home Cockpit project
69 parts4