Quantity   Component name
1 × Doomsday device Bought from Japan.
1 × Espruino Pico / Teensy 2.0 I first considered using Teensy 2.0, but Espruino Pico runs JavaScript and is therefore twice as nice.
1 × USB cable A short USB cable to connect the Espruino Pico to the USB hub of the device, and thus to the computer.