Here we have the breadboard setup with the voltage regulator and the meter showing 5 volts.
This is the LED lighting up with the momentary switch being pressed.
Behold the wonders of LED's in series! When I added a third LED they did not light to full brightness. I don't think that there was enough current to power them all.
The potentiometer is dimming the 3 LED's in parallel.
Here is an attempted creative project. I set up these three LED's to look like a traffic light and made switches with bare wires coming out of the board. When you squeeze the wires together you can turn on the traffic signals. They turn on one at a time or all at once if you wanted to cause an accident.
