Monitor raspberry pi cpu temperature how to#

That script gets the Pi’s CPU temperature from a system file under /sys/class/… and the GPU temperature from vcgencmd (in Celsius), then converts the CPU number to Fahrenheit (for Americans like me) with help from the ‘awk’ utility, since a bash script by itself can’t do floating point hat.

Message='Pi temp $far2 degrees F - as of 'Įcho $message $currentdatestamp > /home/pi/www/html/pitemp.txt # get the CPU temp in Celsius as a numberĬpu=$( $(/opt/vc/bin/vcgencmd measure_temp)'įar=$(echo - | awk -v cpu=$cpu '')Ĭurrentdatestamp=`date +'%A, %b %d, %Y %I:%M %p'`

Add this script in the nano text editor:.

Execute this command to create the shell script:.

Get yourself into the Pi user’s home folder:.Add some JavaScript and HTML to the Pi’s web page which reads that text file and then adds that info to the page.Īnd here are the details (these steps assume you have Raspbian running as the operating system on the Pi but if not, you will need to adjust to use whatever text editor or other things you have).Run that on a regular basis via cron (a crontab file really).Write a shell script to get the temp and save it into a text file.Here’s what that looks like now that it’s all setup: A cool 98 degrees Fahrenheit

Monitor raspberry pi cpu temperature how to#

So I then figured out how to get the Pi’s html home web page to include that info. I recently figured out how to determine the core CPU and GPU temperatures for my new Raspberry Pi 4 by way of a shell script, and it didn’t take long before I got tired of running that manually.