The Arduino Starter Kit Project 2- Non LED-light

[LarryD]

Your switch might not be making good contact in the solderless breadboard.

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Remove the white wire going to Arduino pin 2 pin 3.

Connect the Anode of the Green LED to 5V, does the Green LED turn ON ?

If it doesn't, reverse the Green LED.

Do similar with the other two LEDs.

After you get the LEDs tested as above, re-wire them as in your post #1.

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BTW

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Two Quick Hints Over sized flat component leads can be difficult to plug into solderless breadboards. These oversized leads can even damage the springs in the breadboard conductors. It takes only a few seconds to modify these component leads so they can be accommodated better. Flat leads are bent at 90 degrees, so their orientation lines up with the breadboard spring mechanism. Use the plastic standoffs from male headers on other components to stabilize them and lift the component off t…

• Use diagonal switch leads on switches like this.