- RASPBERRY PI 4 CPU TEMP MONITOR HOW TO
- RASPBERRY PI 4 CPU TEMP MONITOR FULL
- RASPBERRY PI 4 CPU TEMP MONITOR SOFTWARE
- RASPBERRY PI 4 CPU TEMP MONITOR CODE
RASPBERRY PI 4 CPU TEMP MONITOR HOW TO
# Program to demonstrate how to obtain the current value of the CPU temperature.Įcho Current CPU temperature is $cputemp degrees Celsius. Head -n 1 /sys/class/thermal/thermal_zone0/temp | xargs -I") Basically, this offers an alternative to the Raspbian vcgencmd measure_temp command. Let’s start off with a terminal one-liner. The follow sections present specific examples of this for several popular programming languages. Finally, divide that number by 1000 to get the actual temperature in degrees Celsius.
RASPBERRY PI 4 CPU TEMP MONITOR SOFTWARE
With this in mind, it becomes clear how to read the CPU temperature in a software program: Start by reading the first line in this file. In the screenshot you can see that the my current Raspberry PI CPU temperature is 34.563 degrees Celsius. Nano /sys/class/thermal/thermal_zone0/temp That is to say, you can simply open this file with the Nano editor and look at the CPU temperature: It turns out that the file /sys/class/thermal/thermal_zone0/temp holds the CPU temperature in degrees Celsius with a factor of 1000. However, an alternative method exists that also works on other Linux based distributions. CPU temperature under LinuxĪs a result of a little research into measuring CPU temperatures, I learned that the vcgencmd measure_temp only works under the Raspbian operating system.
RASPBERRY PI 4 CPU TEMP MONITOR CODE
For those that want to get to the code snippets right away, you can find them in PragmaticLinux’s CpuTemp GitHub repository. For adding this functionality to your own software program, you can easily copy-and-paste these code snippets. How can you obtain the CPU temperature from a Python program? And once you figured that out, how can you do the same in other programming languages? This article presents you with code snippets in several programming languages for obtaining the Raspberry PI CPU temperature. Now that the topic of checking the Raspberry PI CPU temperature piqued my interest, my curiosity led me to research a bit further. A quick Google search shows you that you can run the vcgencmd measure_temp command. Being a programmer at heart, I set out to search for a way to measure the CPU temperature through software. This means that as long as the CPU temperature stays below this threshold, the chip doesn’t get damaged. The design of the Raspberry PI 4 board and the selection of its components allow the CPU to run fine up to 85 degrees Celsius. But how do you know for sure if this is needed?
In this case active cooling by means of a fan could be required. However, this might not be enough if you place the board in some sort of housing. When running the board in the open air, without an enclosure, gluing a few passive heat-sinks on the black chips suffices. The Raspberry PI board has a harder time dissipating CPU chip generated heat. Raspberry PI 4 heat generationĪs it turns out, all the wonderful new processing power the quad-core 64-bit 1.5 GHz Cortex-A72 CPU offers, comes at a price. With this in mind, I touched the black Broadcom BCM2711 chip and thought “Ouch”. Since I didn’t connect the fan, I figured I should probably double-check that the chip doesn’t run too hot. After playing around with the Raspberry PI 4 through an SSH session and configuring it such that I can login with an SSH key, I opened the enclosure. When I saw the fan, I though to myself “Wait, why would I need a fan? Surely a fan is superfluous”. Included in the packaging of the enclosure were a few passive heat-sinks and a fan. To make the board more appealing to look at and to protect it, I placed the Raspberry PI 4 in plastic enclosure.
RASPBERRY PI 4 CPU TEMP MONITOR FULL
After all, I wanted to verify the presence of the full 4 GB of RAM. The first command I ran was of course htop. With raised excitement levels, I booted the Raspberry PI 4 for the first time. All ready to setup the Raspberry PI 4 as a headless server. In a matter of minutes my micro SD-card contained the Raspbian Lite image.
BackgroundĪfter my newly ordered Raspberry PI 4 board arrived in the mail, I dropped everything to take it for a spin. You can use these to build functionality into your own software programs for monitoring the Raspberry PI CPU temperature. This article presents you with code snippets in several programming languages for obtaining the Raspberry PI CPU temperature. Noticed that the Raspberry PI 4 runs a bit hotter than previous models? That is the unfortunate side effect of packing an increased amount of processing power in the same small board form factor.
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