How to Control an RGB LED With an Arduino

In this Instructable, I'll be showing you how to control an RGB LED with an Arduino.

To complete this project, you'll need:

1x Arduino (I'm using the Arduino Uno R3)

1x RGB LED

3x 150-220 ohm resistors

4x Jumper Wires

1x Breadboard

1x Computer with Arduino IDE installed.

So lets get working...

To begin with, you're going to need to connect your RGB LED any where on the breadboard. Just make sure that all four pins are available.

Next, we're going to connect the ground wire to the LED. If you're not sure what pin the ground is, pull the LED put again and find the longest pin; it is the ground pin. See the diagram above.

Now plug three 150-220 ohm resistors into the three remaining pins.

Now for the fun part. Connect three jumper wires to the red, green, and blue pins of the LED. I used jumper wires of the same color as the pins I was connecting them to.

If you're confused, pin 1 on the LED is blue, pin 2 is ground, pin 3 is green, and pin 4 is red.

Finally, you're going to need to connect all the wires to the Arduino's corresponding pins. The ground wire from the led connects to the GND pin on the Arduino, and the colored pins connect to pins 9,10, and 11 on the Arduino. It should look like the diagram above.

Now, plug the arduino into the computer's USB port.

Open the Arduino IDE software that I'm assuming you've downloaded an installed already. You'll have to download the code from the button below. (sorry, the text editor kept squishing all the code into a paragraph. :-0)

If you did everything right, the led should now be fading through all the colors!

Enjoy!