Temperature controlled fan

I noticed that the media furniture where I have most of my media related devices (bluray-player,gaming consoles, etc.) was getting very warm whenever I was using one of these.I felt the urge to “geek-out” on this to make a something that is both fun and at the same time practical.

The system is divided in 2 sub-circuits; 5V and 12V.

I am using a 5V relay that is connected to the Raspberry Pi to control the higher voltage system where the fan is connected.

The Raspberry Pi reads its data from a temperature sensor that is placed inside the media furniture. This sensor is pulled for new data at a constant interval and will activate the high voltage circuit when the temperature becomes too hot.

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