Instructables
Picture of Arduino RGB led controller
i recently got an arduino and the first project i tried was oomlouts instructable. there was to much work to do on the code so i made a simpler one.
 
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Step 2: Setup

Picture of setup

this is how you setup your led for common cathode of you have the other type go to step 3

red pin to resistor to pin 9
green pin to resistor to pin 10
blue pin to resitor to pin 11
longest pin to ground

DI is blue pin

D2 is green pin

D3 is red pin
 

Step 4: Programing

here is the code for it

it is since to edit the code to make the different colour combinations
using a colour code chart or random colours

Step 5: Enjoy


i hope you liked my instructable
AzurusNova4 years ago
I have been looking for a way to do this but to safely use my arduino to control the RGB lighting in my room with the 12V 3A power supply without burning out my arduino and using the PWM for the control. Do you have any advice?
PoisonMondo (author)  AzurusNova4 years ago
Try connecting it to a optoisolator or transistor. with the arduino on one side and 12V 3A on the other.
Also try MOSFETS
diy_bloke3 years ago
I cld be mistaken but isn't the Arduino capable of sinking the LED current and therefore you wld not really need the transistors?
Its for say driving more than 1 rgb led
Nyox4 years ago
Shouldn't be better to use a led driver for an rgb led with different voltages for every channel? Someone said using resistors is not safe for the led lifetime.
PoisonMondo (author)  Nyox4 years ago
works fine with with me though i wanted to keep it cheap
Is the diagram correct for the direction of the diodes? It looks like the triangles are facing the wrong direction.
Yes the dirgram for the diodes is wrong reverse them
Snuletek3 years ago
isnt this a picture of a common anode?
Abaud44 years ago
The code isn't downloading as the correct file, everytime I try to run it out the folder it won't open.
PoisonMondo (author)  Abaud43 years ago
click save target as then click save type as the add .pde to the end
(removed by author or community request)
PoisonMondo (author)  Ladycartoonist4 years ago
you right click and click save target or save target as.

.PDE is for arduino IDE
PoisonMondo (author)  PoisonMondo4 years ago
or you click the file and copy the code to arduino IDE
Adam Manick4 years ago
What arduino is this?
a duemilanove with, looks to be, 328.