Temperature sensor with wired ethernet to connect to a switch

Hardware
1

Hi there!

I am looking for a sensor that can be connected to a ethernet switch right away. I’ve been looking for it in the web, but I could not find anything.

My problem is that I cannot use wifi to connect the devices to my Home Assistant, that’s why it has to be wired (up to 150 ft).

Thank you very much for your help!

2

Hi, are you looking for a DIY solution or out of the box?
For DIY maybe you could use something like this as a starting point:


Out of the Box, maybe somethin like that?

https://www.ute.de/produkte/ueberwachung/serverraum-ueberwachung/ip-thermometer.html?gclid=Cj0KCQjwp5_qBRDBARIsANxdcimsJjyRIN0LCq0CTtKPHD4il5vjMHNt8VOqdqNDD3rlqODfKoL3Ly8aApLzEALw_wcB
(sorry, text is in german, but I hope google translate can help :slight_smile: )
But I don’t have any experience with them…
3

The DIY solution is the one I was looking for. I didn’t realize I could use the Arduino for that.

Thanks a lot.

4

Keystudio builts an Uno formfactor board which is basically an Uno with integrated Ethernet shield.

https://wiki.keyestudio.com/Ks0304_Keyestudio_W5500_ETHERNET_DEVELOPMENT_BOARD_(WITHOUT_POE)

Great for stuff like this to avoid having to use another shield or wire an Ethernet interface to a Nano.

About $20 on eBay.

5

I have used this to track hot water system temps on a Pi Zero. Could be modified maybe?
https://temperature-machine.com/docs/