One of my friends, David, has just bought a second hand Berlinogo. It’s a great car but doesn’t have any modern multimedia connection capabilities, only a CD player. I took it upon myself to start doing “radio shows” with the free DJ software Mixxx and burning them to CDs. The look on my friends’ faces when my voice came over the car speakers was priceless! Controlling the faders, volume levels and buttons with a mouse is tricky and I wanted something a bit more professional so I made this little gizmo. The case is made from 3mm plywood cut with a laser cutter (file here), the white knobs are 3D printed and the microcontroller is an Leonardo Arduino.