I changed the code from 1000(1sec) to 500(.5) so that the light goes by faster by .5sec and not 1 sec.
Circuit 2
A potentiometer is a variable resistor. When its connected with 5 volts across its two outer pins, the middle outputs a voltage of between 0 and 5. depending on the position of the knob on the potentiometer.
Circuit 3
This circuit is making the light on the Arduino board change from one color to another.
Circuit 6
This is the manual tune to circuit 6, showing that if I touch the Photoresistor the light brightens.
Circuit 8
Circuit 9
I changed the audio to a song from a game.