Raspberry Pi Tempreature Sensor with Scratch

So far I've been using LED's and micro switches in my prototyping, I wanted to take it to the next level and see if I could use an integrated circuit.  I thought this would be a good challenge to take to the Bournemouth Christmas hack day!

I bought some DS18B20 temperature sensors and using the documentation on the pridopia.co.uk website configured my raspberry pi and scratch to read the temperature data.

Using RDP/xrdp to connect to the raspberry pi, I connected using the root logon which you might need to enable.

I needed to run the following commands in the terminal window:
sudo modprobe w1-gpio
sudo modprobe w1-therm

Here's what my breadboard looks like with the temperature sensor.

The pridopia instructions have you setup and run a mesh host which handles reading the data, when you run Scratch you can then join the mesh to get access to the devices.

Here's a screenshot of the scratch program running and displaying the temperature

Will demo this at the next Code Club meeting.