RaspberryPi Temperature Sensor: Difference between revisions
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apt-get update | apt-get update | ||
apt-get ugrade | apt-get ugrade | ||
==== Install missing packages ==== | |||
If you have already installed them, you can skip that step. | |||
apt-get bc | |||
? | |||
==== Setup kernel modules for GPIO and 1-wire device ==== | ==== Setup kernel modules for GPIO and 1-wire device ==== |
Revision as of 21:46, 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 bc ?
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
Result:
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: