NanoPi M4: Tips for Keeping IoT Projects Stable

[jeffreestar]

Hello everyone,

I am testing a small IoT project using NanoPi M4 combined with a temperature/humidity sensor (DHT22) and a USB camera for recording. My system works quite well but when running for a long time (about 24–48 hours), the CPU often heats up quickly and sometimes there is a phenomenon of thermal throttling.

Currently, I have tried a few ways:

Adding a heat sink and mini fan.

Reduce unnecessary services in the background (disable cronjobs).

Limiting the camera FPS to reduce the load.

However, I still want to optimize further to make the device operate durably, especially in outdoor environments.

I opened this topic to ask for opinions from the community:

Besides the heatsink/fan, is there any solution to help NanoPi M4 maintain a stable temperature when running continuously?

Is there any firmware or kernel specifically optimized for IoT + camera workloads?

Can anyone who has used battery and solar power to power NanoPi share their schematics or design experience?

I look forward to receiving advice from everyone to complete this project.

Thanks for reading and hope this topic is also useful for those who are researching NanoPi applications in IoT!

edit by that's not my neighbor

[waxahe5809]

From my experience with NanoPi M4, besides cooling you’ll get better thermal stability by underclocking/undervolting via CPU governor settings, using a lightweight headless OS, and ensuring proper case airflow (or even passive vented enclosures for outdoor use), while mainline kernels with optimized drivers tend to handle long-running IoT + camera workloads more efficiently.
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