Quantity   Component name
1 × Rotary dial from an old telephone
1 × Teensy 2.0 microcontroller (Arduino IDE compatible)
1 × Custom circuit board, 24-pin socket, 0.1 uf capacitors, 12K resistors
1 × Sheet clear acrylic, 12" x 6"
1 × Wooden board for base, cut to 6.25" x 6.25"
1 × USB cable, mini-D to A (connect to PC)