I spent my week at BlueStamp building this miniPOV3 from the adafruit kit. The resistors, 20 pin socket, diodes, connecter, wires connected to the battery case, and 8 LEDs were soldered onto the PCB. The resistors prevent the device from frying. The 20 pin socket connected the microcontroller, which is the “brain” of the device, to the PCB. The diodes allow an electric current to pass through in one direction while preventing a current from passing through in the other direction. The connector allowed the device to be connected to a computer so that the POV could be programmed. The LEDs on the persistence of vision device were programmed on the computer to flash quickly in a certain order to allow the brain to register the message “XX 2011-14” when the device is moved quickly.