Aquarium (or general purpose) controller

Author	Message
Mixtel90 Guru Joined: 05/10/2019 Location: United Kingdom Posts: 7865	Posted: 10:11am 04 Mar 2024       Those two are directly switched by the RH OFF-ON toggle switches, not via the ULN2003. I only used relays to give isolation from the toggles, which are going to be operated by wet fingers!