The almost-a-rainbow’s-worth of LEDs are mounted on circular PCB, which is mounted to a stepper motor through a gear train. This allows the instrument to scan through all six colors, shining ...

The Arduino UNO and Arduino Mega 2560 update the Duemilanove and Mega ... Geared toward designers, the kit has PCB modules that include a joystick, soft pots, transistor, relay, power MOSFET ...