JSelec is an technical blog started by Jan en Stefan, who are passionate about electronics.
We spend lots of time on this hobby together realizing great projects which involves computers, Arduino, Raspberry Domoticz etc.
We’re both ham radio operators. We’re trying to get as much as possible of our projects on this website.

As computer enthousiast and plays a lot with webservers, virtual machines, and for example domotics.
You may find many random notes on this site. Feel free to you this info for your own projects.
Did you like what you see, feel free to support. You find a donate button on the right.

Your questions are also welcome!

pfSense – Update Realtek driver v1.95

Download driver:
jselec mirror: https://jselec.nl/wp-content/uploads/2019/01/if_re.zip

Unzip & Place “if_re.ko” file at “/boot/kernel

Change ownership and permissions on the if_re.ko file

chown root:wheel if_re.ko
chmod 0555 if_re.ko

Then edit “/boot/loader.conf” to add this line:



Then go to diagnostics > command prompt in the WebGUI

Run the command


If you did everything properly you’ll see “if_re.ko” in the list that comes up. If not, the driver isn’t loaded.

(i didn’t get it loaded myself. Added the line of code to /boot/defaults/loader.conf Then it worked for me)

OTGW iSense Calenta Return water temperature

Is your OTGW (Opentherm Gateway) not returning the return water temperature?
Issue the following command:

Check in the list of devices. The actual temperature should now be reported.


Proxmox gui not responding

It could happen that the Proxmox GUI is not responding to http request.
One reason could be that the webdaemon is not running or has crashed.

Try restart of the service:

service pveproxy restart