First of all, sorry if lately my posts are published less often than before, but I'm quite busy with several other things and my time for hobbies is quite limited...
Today I will show you a project made for request.
One friend have a small fish tank and he wished to make a really small system, just to check the temperature, pilot lights and few other things .
One Raspberry Pi model A+ was perfect to manage the fish tank with those features, so I decided to start this project and I finished it in few days.
Now this system has been named Aquarius and it's working as it was requested, with some small addition made by myself.