In need of an Arduino education: LED Wiring etc...

Hey everyone, I'm in need of some information ranging from extremely general to pretty specific. So here it goes. I am building a canopy for my aquarium using Cree XP LEDs. I have a 24V, 6.5A Potrans power supply running two 1000mA Wired Buckpucks W/ Pots, which each drive a string of 6 XP-G's and XP-E's mounted on star boards. Here is a schematic of my circuit. See next Post. I have included links to all of my components below for reference information.

So I'm thinking I can hook up the 0-5v line on the driver to a PWM port on an arduino, I just don't know what to do with the other one? I also want to have these all reference a real time value, so I can independently have each string fade in at out at certain time intervals.

My first string of questions being: 1| Where would the Arduino fit in all this? Can I run it off the 24V supply? 2| How can I attach the Pucks to the Arduino for control? 3| Im interested in possibly adding one more string for moonlights, that in mind, which Arduino would be best for me? 4| Is there a real time chip or shield that I would need to get?

I'm doing my share of reading, i'm not the best with electrical stuff, so its requiring quite a learning curve before a lot of even the basic reading makes full sense.

Thanks in advance! Brian

Wouldn't let me attach images or links in my first post here.


Reference pages: Power supply: http://www.mpja.com/prodinfo.asp?number=16854+PS Drivers: http://ledsupply.com/03023-d-e-1000p.php LEDs:http://www.mpja.com/prodinfo.asp?number=16854+PS http://ledsupply.com/docs/XLampXP-E-1.pdf

1| Where would the Arduino fit in all this? Can I run it off the 24V supply?
No you can’t run the Arduino off anything greater than 5V.

2| How can I attach the Pucks to the Arduino for control?

Use the external dimmer control input fed with smoothed PWM.
http://www.thebox.myzen.co.uk/Tutorial/PWM.html

3| Im interested in possibly adding one more string for moonlights, that in mind, which Arduino would be best for me?
As good as anything else.

4| Is there a real time chip or shield that I would need to get?
NO NO NO.

1| Where would the Arduino fit in all this? Can I run it off the 24V supply? No you can't run the Arduino off anything greater than 5V.

2| How can I attach the Pucks to the Arduino for control?

Use the external dimmer control input fed with smoothed PWM. http://www.thebox.myzen.co.uk/Tutorial/PWM.html

3| Im interested in possibly adding one more string for moonlights, that in mind, which Arduino would be best for me? As good as anything else.

4| Is there a real time chip or shield that I would need to get? NO NO NO.

Thanks for the reply, could you or someone elaborate more on 3 & 4? Are you saying any board will work? Is the stock board capable of running a real time function like I have described then? Thanks for the link, I'll add it to my, "to read" list tonight.

Are you saying any board will work?

Yes any arduino or any other sort of embedded processor.

Is the stock board capable of running a real time function

Yes all controller run in real time that is the point of them, there is no operating system to get in the way unless you are stupid enough to load one on.

Your name is well deserved sir. Thank you for putting up with my idiot questions, im sure you guys get a ton. I'll work from this and see what happens.

You can put up to 12v in to the arduino's voltage regulater, but no less then 7v. But no more then 5 directly to the board.