Fritzing Creator Kit - #02 Chaser Lights
LED chaser circuit
We will now build an LED chaser circuit. Connect eight LEDs each to a resistor and a digital output . If possible, don't use pins 0 and 1 (RX and TX). They are needed to transfer data to the computer.
The topmost and bottommost rows of the breadboard are used for power distribution. This is where you connect and distribute the GND and +5 V from the Arduino board. The holes on the inside of the breadboard are connected in columns pointing to the board centre (see picture).
Try to make the chaser lights run from both sides inwards.