This project has required the design and development of several custom sensors. This is the first one to have been built. It uses 5 one-wire temperature sensors attached to an AVR. The AVR then runs code to interface with the sensors. In order to connect to the main sensor node the AVR uses RS-485. This means that it can be away from the main node, and because of the multi-drop nature of RS-485 multiple such devices could be attached. The other sensor nodes also interface using RS-485 so each node could have different types of remote sensor attached.