The relay, junction boxes and raspberry pi are mounted on a small sheet of plywood... Is it something to do with the relay starting a fire? I'll make up some sort of steel heatsink for it if necessary.
Hi I've a quick question to any Europe based homebrewers who've built one - is my wiring ok here; I'm not sure if i've converted the 110v schematic to 220v correctly and I don't want to start a fire! I haven't added the Raspi, Arduino & temperature sensors yet but I will once i've checked out...