does it has issues on all different OS ?
Hi, with the others OS was work the wifi but not do the ethernet, the eth0 always be down.
I have given up using it, now i use external power supply
maybe something wrong with the PoE-HAT. An alternativ would be using a POE Splitter
Hi again.
I’m working with Raspberry 3 and POE HAT a couple off years they work very good. Now with the Raspberry 4 this is not possible.
I have several Raspberry and several POE HAT all of this doing the same.
But now i was installed “chromiumos_test_image_r77r2-rpi4b” into the Raspberry PI 4 with de POE HAT installed and all work right
but if I understood right, this is not working on standard Raspberry OS as well. Correct?
That’s correctly the POE HAT was works right with Chrome OS but not with Raspbian OS
OK than it’s an issue of Raspberry OS. As DietPi is using Raspberry OS as base image (for RPi boards), your PoE-HAT is not working on DietPi as well.
Hi All,
I have a Raspebbry Pi 3B+ and I have attached a fan to it. The fan is just a fan, with two wires coming out of it. It is NOT a PoE-HAT with a fan. The fan is on the whole time running at full speed.
Is it possible to control the fan?
Thanks
Nope, if the fan is just connected to the board, it will spin whole time until you removed power. To have it controlled, you need additional stuff. There are a couple of guides on the web. Just search for “raspberry fan control”
Quick and dirt fix:
You can add a resistor to lower the speed (and the noise).
Opening this thread back up.
It seems after installing the latest DietPI OS update (7) the POE fans on all of my pis have stopped working completely.
No additional config was done to them. It just worked out of the box.
I can see them jitter for a moment when booting up, which they already do, but they never run after.
Temps are in the red and I’m getting warnings.
DietPi is not an own OS, it’s a set of scripts on top of Raspberry OS (in your case)
For testing purposes, I use the official RPi fan heat as well on a RPi1 and there it is working well without issues.
Did you checked values inside /boot/config.txt
dtoverlay=gpio-fan,gpiopin=14,temp=50000
I checked. Settings are still there. Seems that something got borked on the 7 update.
I was able to fix it though. Performing a sudo apt-get update then upgrade fixed whatever was going on and it’s working perfect now.
running apt is updating all apt managed packages. As apt is the standard Debian package manager, it is not really something DietPi is influencing. However dietpi-update invoke apt update && apt upgrade in front of DietPi scripts update.
Question, did you have done a reboot after updating DietPi?
There was a kernel package update somewhere between yesterday and today, I guess that has to do with it 
.
could be, at least the fan was working on my RPi1 using the new kernel 5.10.17 already. Good that RPi devs fixed it so fast 
For testing purposes, I downgrade to last stable kernel 5.10.11 and fan was working still