ok to be a little more clear...
The switch I'm trying to "bypass" or replicate however you want to imagine it is a simple SPST momentary switch.
Pressing it the garage door activates... press it again the door stops, 3rd time starts again in opposite direction or initial press
If I completely remove the switch mechanism and just have the 2 bare wires that lead into it I get the same results when "pressing" the wires together.
I need to close the circuit when the correct RFID tag is read and the "access granted" function executes...
Can this be done purely with the arduino? (I don't think so...)
If I need a relay(which I believe I do) which of these rat shack beauties would work?
5v 1a SPDT
http://www.radioshack.com/product/index ... nSession=1
12v 1a SPDT
http://www.radioshack.com/product/index ... nSession=1
12V/125V 10a SPDT
http://www.radioshack.com/product/index ... nSession=1
7-9v 12a SPDT
http://www.radioshack.com/product/index ... nSession=1
5v 1a SPST Reed
http://www.radioshack.com/product/index ... nSession=1
And finally... should my circuit look like this one in figure one:
http://www.dnatechindia.com/index.php/T ... acing.html
I have some 1n4004 diodes and npn transitors I just want to make sure thats correct