The Traktorino is a low-cost DIY MIDI controller for DJs! It's totally open-source, based in the Arduino platform.
In this video I will show you how you can assemble the PCB, soldering all its components in the easiest and fastest way.

Traktorino Website: http://www.musiconerd.com/traktorino
Buy the Traktorino: http://www.musiconerd.com/shop

Components:
1x Traktorino PCB
1x Arduino Uno
11x b10k vertical rotary pots
3x b10k slide pots (C3031N-1A2-B10K-GP)
1x Rotary Encoder
2x cd4067 multiplexers
3x 74hc595 bit shifters
13x tactile buttons
24x 220ohm resistors 1x 1k resistor
11x 3mm blue leds 10x 3mm green leds
2x 3mm yellow leds
2x 3mm red leds

#2

In this video I will show you how you can program the Arduino board.

Arduino IDE: https://www.arduino.cc/en/Main/Software
Traktorino Github: https://github.com/silveirago/traktorino

In this video I will show you how you can make any Arduino Uno, or Mega, that has an ATmega16U2 a true USB MIDI class compliant device.

DFU programmer: https://www.arduino.cc/en/Hacking/DFUProgramming8U2
Pimp my mocoLUFA: https://moco-lufa-web-client.herokuapp.com/#/

In this video I will show you how you can assemble the Traktorino's enclosure!

What you need:
1 Enclosure
11 round diffusers
2 long diffusers
6 hex spacers 6mm
6 hex spacers 20mm
6 M3x10 screws
6 M3x3 nuts
11 rotary knobs
3 slide knobs
13 button caps
4 Rubber feet