Here’s a quick thought and a question – it looks like this can be done by connecting one of the OpenSprinkler stations to a simple 24vac NO relay placed on the line that goes to the button inside the garage. Some garage openers are more complicated, but some are so basic that they use a doorbell to close the circuit.
Anyway if that’s the case could I use the following HTTP commands to open / close the door?
http://x.x.x.x/cv?pw=password&mm=1 ‘switch to manual mode (required to manually turn on a station)
http://x.x.x.x/sn1=1&t=2 ‘activate the relay for 2 seconds
http://x.x.x.x/cv?pw=password&mm=0 ‘switch back to program mode
Also, what effect does changing to manual mode have if the system is currently in the middle of a program? Does the program stop?