Quote Originally Posted by jukingeo View Post
I found this on Amazon, so apparently you can even get the two devices together. The Arduino board connects right to the Sainsmart relay module. The difference is that this isn't USB, but network.

http://www.amazon.com/SainSmart-Cont...FZEEYXJAQ073ME



As far as I can tell the relays use a positive reference and the outputs going low will complete the circuit. Here is the schematic (see attached .pdf)

Keep in mind, I am going to use 2 4 channel boards instead of 1 8 channel board. The reason for this is so I can locate the boards in different places.

It is getting very close to Halloween now, so I am going to use the Renard48LSD for now. But if an Arduino setup could be used in the future then I would go that route.

Thank You,

Geo
Yeah, the arduino option is pretty cost effective. Pm me if you want me to help you out.