When I run this code above I would expect to hear my relays latch. That does not seem to be the case.
Does the relay have to be wired to latch on & off ?
If so, I am trying to control a 12VDC can someone give me an idea how that would be wired. I would assume I would just have 2 wires going into it and when the relay latched it would make the connection.
I guess that when Gus is talking about powering the relays, it is not on the “secondary” of the relay, but more on the “primary”, that means : How do you power the BOARD !
Effectively, relay consomption can absorb some power, and maybe you power supply is not sufficient for both the Spider and the relay board !
Regarding to the secondary also, you only need to wire the 1 and 2 for Normally Open, or 2 and 3 for Normally closed, where pin 2 is the common of the relay as shown in your example.