Lauwenmark

Ok, I've made quick tests (I've got guests home today ). I've tested four different USB PSUs, all rated 5V >=2A. With two of them, I get 48°C idle. With the next two others, I get 51°C, so I'd say that although there may be some effect due to the PSU itself, there isn't any significant variation. After that, I've retried the first PSU (the one that got me 60°C results), and now I get constant 49°C! What I'm wondering is that if somehow, the higher temperature wasn't caused by the first run of the Debian? Maybe some sort of background process was left running that caused it? I have three other OPi Zeros, so I'll definitely test things further. I admit this left me with some head-scratching

Okaie, thanks. In the meantime, I've also tried replacing the power supply by another one (also a 5V 2.5A), and with the exact same setup, I now only get 49°C idle! So maybe the first power brick I used was not very good. I'll try to get a hold on better ones or design my custom regulated 5V psu block. Your readings are indeed reassuring. I'll put a small heatsink on the Zero, and it should do it. I don't plan any heavy duty on those anyway. Thanks a lot for your answer!

It is quite warm - I can leave my thumb for several seconds on it, but I wouldn't leave it for a whole minute. When I leave my finger for a couple seconds, the temperature gets a little lower, to around 61°C.

Hello, I've received my OPi Zero a few days ago. I've installed Armbian 3.4.113 (Debian Jessie) on it. Everything seems to be working fine. However, I'm worried by the temperature of the thing. With just the default installation and no extra installed, I get the following: root@orangepizero:/home/sysadmin# armbianmonitor -m Stop monitoring using [ctrl]-[c] Time CPU load %cpu %sys %usr %nice %io %irq CPU 11:53:58: 912MHz 0.00 1% 0% 0% 0% 0% 0% 67°C^C root@orangepizero:/home/sysadmin# armbianmonitor -m Stop monitoring using [ctrl]-[c] Time CPU load %cpu %sys %usr %nice %io %irq CPU 12:00:13: 912MHz 0.00 0% 0% 0% 0% 0% 0% 66°C 12:00:18: 240MHz 0.00 0% 0% 0% 0% 0% 0% 66°C 12:00:23: 240MHz 0.00 0% 0% 0% 0% 0% 0% 67°C 12:00:28: 240MHz 0.00 0% 0% 0% 0% 0% 0% 66°C 12:00:34: 240MHz 0.00 0% 0% 0% 0% 0% 0% 67°C 12:00:39: 240MHz 0.00 0% 0% 0% 0% 0% 0% 67°C 12:00:44: 240MHz 0.00 0% 0% 0% 0% 0% 0% 66°C 12:00:49: 240MHz 0.00 0% 0% 0% 0% 0% 0% 67°C Ambient temperature is around 25°C, and I've not put any cooling device on. Power supply is through the microUSB port using a 5V 2A USB charger. I've read at various places on this forum that the expected temperature in that case should rather be in the 30-40°C range. Should I worry, or is it a perfectly normal temperature? If not, what could I try to lower it? Thanks in advance!