Fading RGB LED (Arduino)

In this Instructable I'm going to show you how to make a simple fading RGB Led.
It can be used as a nice night lamp or as mood lighting.

Step 1 Parts

To make it you'll need:
- an Arduino ( I'm using an Arduino UNO R3, but others may work aswell )
- an RGB Led ( I used a common anode one, common cathode will work too )
- a Breadboard
- some wire
- 2 resistors 180 ohm  ( Brown, Grey, Brown, Gold )
- 1 resistor 330 ohm ( Orange, Orange, Brown, Gold )

Comments

[adammary]

Hi, your tutorial looks great and I'm going to try it soon.
I don't have the components yet, but for now I'm trying to understand the code.

In the first for loop, the LED slowly fades from green to red right?
But from what i understand in the second for loop, the LED fades from blue to green. Don't you need a for loop that fades the LED from red to blue before starting the second for loop to make sure smooth fading?

In other words, shouldn't the 3rd and 2nd for loops need to switch places so that the color fading is in order?

This is what I understand from the code. Correct me if i'm wrong.

[adammary]

oh wait nevermind i got it now. i didn't realize that all three pins are initially set to high

[on6mj]

Great!!!!!

[cyragia]

Thanks !

[on6mj]

OK, but your program is short and verry efficient.
Realy smooth color changing.
Realy nice.
Best WE,
Jean.

[jborgne]

this is a good instructable. Very clear and easy todo, and does not require a ton of parts to complete. Keep up the good tut's.

[cyragia]

Thanks !

[Higgs Boson]

In the schematic it appears the LEDs have a common anode. but I've read that RGB LEDs have a common cathode.

[cyragia]

you have both common anode and common cathode rgb-leds.
in my schematic i used a common anode one because i only have common anode ones.

[Higgs Boson]

Okay. thank you.

[cyragia]

No Problem :)
What do you think of my instructable ?
Any ways i can improve it ?

[Higgs Boson]

It seems to have everything you would need to make this project. I think it is very good. I'll probably make it sometime soon.

[Higgs Boson]

I just made it, and it works great.

[cyragia]

:D