Arduino-Powered Pumpkin

Step 2 Build the circuit

At this step, you're just completing the connections made in the previous step. However, you'll notice that instead of three LEDs, I've got two perfboards with four LEDs each and also one LED that lives on the breadboard. The perfboards are an implementation of the multiple LED schematic from Arduino playground. The connection is almost exactly like hooking up an LED to the Arduino, except that you have an extra connection to +5v, shown in the photo notes, in addition to the usual digital pin and GND connection.