DJC-DIY is an open-source DJ controller that you can make at home without special tools, skill or knowledge.

It works with Mixxx (open-source DJ software).

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🎓 Tutorial

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🔩 Parts List

3D Printed Parts

x1 | Case

x1 | Front Panel

x1 | Arduino Spring

x2 | Jog Wheel

x2 | Play/Pausse

x2 | Cue

x4 | Performance Pad

x1 | Crossfader

x2 | Tempo Fader

x4 | Knob

x4 | Feet

Electronic Components

x1 | 🧠 Microcontroller | Arduino Pro Micro - ATmega32U4 - USB Type C

x8 | 🔘 Buttons | B3F-4055 - 12x12x7.3mm

x4 | 🎛️ Rotary Potentiometers | R0902N - B103 - 10kΩ - 23mm shaft lenght - D shaft

x3 | 🎚️ Slide Potentiometers | 60mm - B103 - 10kΩ - 15mm handle lenght

x2 | 🔄 Rotary Encoders | EC11 - 15mm shaft lenght - D shaft - without push button

x4 | ➖ Resistor | 1/4W - 10kΩ

|🔌 Wires | 24 AWG - Red, Black, Blue, Green, Yellow

💻 Required Software

Download and install required software

Arduino IDE - an open-source development environment for programming Arduino boards - DOWNLOAD

Mixxx - an open source DJ software - DOWNLOAD

🛠️ Assembly Guide

1. Acquire electronic components

Acquire all electronic components from the electronic components list.

I personally bought everything from Aliexpress and had no problems.

2. 3D print parts

3D print all parts from the 3D printed parts list.

I used max speed, 15% infill, .2mm layer height. Use support where needed.

If something can't be pulled onto a part, try printing it at 105% scale.

3. Wire electronics in the case

Here you can see an illustrated schematic.

Solder everything as shown.

This is the layout of the electronic components.

First solder left rotary encoder.

At the beginning, solder the pins from the bottom side of the Arduino.

Use this opportunity to leave more space on the top side for later, because once several electronic components are soldered in place, the Arduino will no longer be movable, and soldering from the bottom side of the pins will no longer be possible.

Then solder right rotary encoder.

Also solder the pins from the bottom side.

Next are buttons for the left deck.

Then buttons for the right deck.

And the last are potentiometers.

It should look like this when everything is soldered.

4. Install firmware

Open firmwar.ino with Arduino IDE.

Select your board (some Pro Micro clones can only be used stably as Arduino Leonardo boards).

Install MIDIUSB library from Gary Grewal.

Then upload the code.

5. Install mapping files

Copy ”DJC-DIY.xml” and ”DJC-DIY-scripts.js” to

”C:\Users\username\AppData\Local\Mixxx\controllers”.

Select mapping files by going to the preferences. (Options > Preferences or Ctrl + P)

Go to the controllers tab and choose something like Arduino/ProMicro/Leonardo.

Then go to the load mapping and select DJC-DIY.

6. Test the device

Test your device before assembling rest 3D printed parts.

7. Assemble the rest 3D printed parts

Assemble the rest 3D printed parts.

Feel free to use glue where needed.