Recent content by scarfie

Can anyone recommend a proximity sensor to help me train sneaky dogs? Scenario: dogs sneak into the laundry room and jump up on the counter to eat the cat food (and "snack" in the litter). We leave the door cracked 4 inches so the cats can get in, but the dogs can push by the obstruction with...

Considering the wired approach, how long can that run be? I've thought about monitoring this, but I'm 1000 feet from my water meter so I never got real serious with it. Also, what is the potential for a power spike on this wire blowing out your comm port?