I am still thinking about the relay. Some people say you don't need it, others say the float switches could get stuck on if you use them directly. The relay was so cheap I decided to use it. I forgot the holder, I think I'll find some way to make it by heating and bending acrylic or some kind of plastic.
[IMG]http://i.imgur.com/JcpA4p6.gif[/IMG] [IMG]http://i.imgur.com/JcpA4p6.gif[/IMG] [IMG]http://i.imgur.com/JcpA4p6.gif[/IMG] [B][URL="http://s92552857.onlinehome.us/temp.html"]Click here[/URL] to view my Raspberry Pi Aquarium Controller![/B] :what: :what: :what: