Temperature Measurement

The Temperature Sensor

There are a number of temperature sensors on the market that we could use for this project, but I have settled for one of the more common ones, the DS18S20 from Maxim Integrated Products. For the initial prototype device, I will be using the though-hole version (the TO-92 package) of the sensor so that it can be plugged into a breadboard (see image on the right – Trivia: it says ‘Dallas’ on the image as it was originally made by Dallas Semiconductor which was acquired by Maxim in 2001).

The Setup

DS18S20 temperature sensor
ATmega168 microcontroller
RFM12B wireless module