I will add heatsinks once the frame is built and mounted. Thank you.

Do you have heat sinks on the CPU and GPU? If not, they are pretty cheap to buy and you can find them on amazon. It might make a difference for you.

Even though it’s below 80c, the thermometer flickers.

Like I said, I have some iframe modules loading cameras, but I wouldn’t think that is intensive?

Right now it’s showing around 80C.

Hmm, that’s far too high for normal operating conditions. Are we talking about a Pi 3 ? Are there other processes making demands other than your OS and MagicMirror? Also, some modules are more labor intensive than others. Too many of these would cause your system load to rise dramatically, and so your CPU temp.

Assuming there is no physical defect in your Pi, you need to determine what is causing the problem in order to correct it.

I took off the top part of the case and it dropped 2 degrees. Right now it’s showing around 80C.

I only use the bottom half of my case to actually hold the Pi. The fan sits right on top where the other half of the case would be.

What is the actual temp of your CPU?

My Pi was running at 60°C, which is well under the maximum that I discovered. Still, I took it upon myself to add a fan (I have spare parts lying around) and connected it to a 5V pin and a GRD pin on the GPIO header. I’ve been running the mirror for months now without a hitch and my CPU temp is nearly 20°C cooler.

Note: It’s a 12v fan from an old Apple G5 power supply, yet it runs fine, so if you have something laying around you can try that.

vcgencmd measure_temp

Thank you very much. It’s reading at 82.7F.

I have some streaming cameras that refresh every few minutes. But, not overclocking or doing anything else but MM.

You’ll see a half-filled thermometer when the CPU reaches 80° C (CPU throttling will engage), and a full thermometer at 85° C (max recommended temperature). These are unusually high operating temperatures.

You can see the current CPU temp by running the command vcgencmd measure_temp in the terminal. If you’re seeing a normal temperature (50 - 60°), yet the icon is still showing up, then something weird is going on.

If you’re confident that your Pi is operating at a normal temperature, you can disable the icon altogether by putting avoid_warnings=1 in your /boot/config.txt file. But I’d only do this if you’re REALLY sure that the CPU is not overheating.

I hope this helps!