The littleBits slide dimmer control requires a +5VDC and ground power supply to properly operate it. The Arduino's +5VDC power can easily operate the littleBits electronic module. The proto-board is used to wire the slide dimmer control to the Arduino's onboard +5VDC power supply. The slide dimmer control analog signal is wired to "A0" Arduino pin. Additional information about the proto-boards terminal blocks' definitions is shown below. To provide additional support for the slide dimmer and the proto-board, place them on a littleBits mounting board.