My name is Steve and I am new to arduino, I am really amazed about what the possibilities are with this controller!
So I wanted to just turn on and off a 3w led star with arduino, but I am not able to find the solution here in the forum, so I decided to post the inquiry.
This is the way I am lighting this 3w Cree led right now, I am using an LM317t as a driver, with a 1,8ohm x1w resistor, to send 700ma to the led at 3v.http://img101.imagevenue.com/img.php?image=063040863_3wled_122_556lo.jpg
The lm317t will use 3v and the led another 3v, so I decided to use a Power Supply of 6v.
The circuit is tested and works perfectly, but now I want to turn it on and off with this driver and with the Arduino.
I have the Arduino Mega 1280.
With some lines of code I want to be able to turn it on and off, is it possible?
Where should I plug the arduino in this circuit?
Also, Is it possible to fade on and off this led with another really simple circuit and this LM317t using pwm ?
Thank you in advance!