After mining through a small mountain of off-the-shelf components, we strike a vein of Valve-designed gold.

Behind the "Big Button" on the front of the Machine lies a board containing 12 LEDs—for illuminating the circumference of the power switch—plus the clicky button itself.

The board is wrangled by an NXP LPC11U24F 32-bit ARM Cortex-M0 microcontroller.