Maximum Number of Zones

[astrogerard]

I had it installed but removed it when the anomalies appeared. Reinstalled it but doing so caused n1 on the first relay module LED to energize so I removed it again. I was not able to turn it off via the SIP app. Was installed it above the last SHIFT REGISTER.

It should be placed on the first hc595 at the connection point of the Pi. Even better is a 100ohm resistor in series. Something like this

Code:

Pi ---[ R100 ]---|-----> to hc595
                 = 0.1u
         |    
Gnd -------------------

Also, never connect wires or components while powered on. I assume you do know this but want to mention it anyway.

Without the right measuring equipment it is trial and error. You will get there I'm sure :-)