Constant live sockets

[craigarty]

Hi

I have been using Reef Pi for about 3 years but decided to buy new tank so I decided to start again with the parts layout and start from a clean install including Bullseye.

Everything was working, sockets connected to the relay and turning on and off with the app. 24hrs into operation I couldn't turn the equipment off, the relays stayed live and stopped clicking when selecting on/off. I presumed that the relay was bad and changed it. Started working again but about 24 hrs later this did the same thing.

I cannot work out what is going on with the reef pi as I never had the issue before. The Pi is 3b+ and I've also tried a zero 2 w and it does the same thing.

I've attached a photo of a badly drawn
Setup and was wondering if I've done something wrong this time?

Thanks in advance for any suggestions or solutions on how to fix this.

 

[Red_Beard]

Sounds like something is getting either shorted or that it is missing a drain on the I/O pin, like a pull up/ pull down resistor(and that it is correct for application, up or down). That is where I would start looking. I don't see anything glaringly obvious at issue with your schematic.