RaspberryPi Temperature Sensor: Difference between revisions
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cd 10-000802ad5087<ref>This will differ, since this is the UID of my device.</ref> | cd 10-000802ad5087<ref>This will differ, since this is the UID of my device.</ref> | ||
cat w1_slave | cat w1_slave | ||
39 00 4b 46 ff ff 03 10 9c : crc=9c YES | 39 00 4b 46 ff ff 03 10 9c : crc=9c YES |
Revision as of 21:50, 19 June 2013
Time to build a temperature sensor with my Pi.
Schematics
Configure the Pi
Update the OS
This not necessary, but generally a good idea.
apt-get update apt-get ugrade
Install missing packages
If you have already installed them, you can skip that step.
apt-get install bc apt-get install gnuplot
Setup kernel modules for GPIO and 1-wire device
modprobe w1-gpio modprobe w1-therm
Check setup
Check whether there is now our sensor device:
cd /sys/bus/w1/devices ls -1
10-000802ad5087[1] w1_bus_master1
See it's content (values):
cd 10-000802ad5087[2] cat w1_slave
39 00 4b 46 ff ff 03 10 9c : crc=9c YES 39 00 4b 46 ff ff 03 10 9c t=28562[3]
Code
This is how I read the device and generate a nice plot using GNUplot:
TBD
And this is how it looks:
TBD