README

This is a software package to log temperatures from [DS18B20](http://www.maximintegrated.com/datasheet/index.mvp/id/2812) sensors and 
display the temperatures with [dygraphs](http://dygraphs.com/).

I started out using the project here:
http://learn.adafruit.com/adafruits-raspberry-pi-lesson-11-ds18b20-temperature-sensing/hardware

I modified the code they point to to log to a text file and used cron to log temperatures every minute.
Then I used dygraphs to display the temperature via a python web server. 

These commands must be added to the crontab: 


# Log the temperature every minute:
* * * * * python /home/pi/webserver/temper.py >> /home/pi/templog/temper.log 2>&1

# Find the days maximum & minimum on each device:
58 23 * * * /bin/bash /home/pi/webserver/maxmin.sh >> /home/pi/templog/maxmin.log 2>&1

# Start the web server at boot.
@reboot cd /home/pi/webserver && echo "SERVER START AT $(date)" >> /home/pi/templog/server.log && python simpleServerWithCameraHandlerREST.py >> /home/pi/templog/server.log 2>&1 &