Lasers and stuff

Just before I make the plunge... can this laser be controlled thru digital out just like an LED is? http://www.sparkfun.com/commerce/product_info.php?products_id=594 Also, I have 3 PIR sensors with the make controller controlling an art installation. It seems like no matter how I wire it, there is always noise in the signal. The PIR sensors are supposed to output only when they are triggered and I am getting wacky numbers on their inputs. Since there are all kinds of other wires and electronics all around this installation, can that be the problem? Is interference common on the make board? Is there a way I can wire this to elimiate that? thanks

For the laser, it looks like the 2 leads coming out of there are just for power so running some current through that circuit would turn it on and disconnecting it would turn it off. For the interference, the biggest culprits are usually high power lines (power supplies, etc.) so you would definitely increase your chances of success by separating those as much as possible. Generally, I wouldn't expect much trouble from 3 PIR sensors connected in a more isolated environment. Do you have a convenient way of just testing that to make sure that's not your problem?

Yes and no. It looks like an isolated rewire would fix everything. Do you suggest a certain wire for me?

About the Laser, Is this one compatible with MC? It as 4 connector and can be control using TTL.

http://www.robotshop.ca/accueil/produits/pieces-robots/electronique/eclairage/module-laser-rouge-ttl-sfe.html

Thanks

Claude

Hi

I am answering my self. I found the way to use the 4 wire laser.

Looking at the diagram of the module i saw that two of the 4 connectors are ground (green and black), one (red) is the 5v input and the other (white) seems to be the controll input. So i plug the red wire to the VOut1, tie the green and black together into the ground and plug the white to the digital out 0. And it's works but sending a 1 to the out close the laser and 0 open it.

Claude

Awesome! thanks for your help man.