I wanted to share this opinion on Hackaday about a topic that is the usefulness of a something that has become ubiquitous relatively fast.
This techonolgyy has a lot of potential, what do you think?
I wanted to share this opinion on Hackaday about a topic that is the usefulness of a something that has become ubiquitous relatively fast.
This techonolgyy has a lot of potential, what do you think?
I wish PoE would get more love. Networking and power in one package. Voltage is high enough that you can run it around your house without too much power loss, but not so high that you are supposed to have a licensed electrician do it. The equipment for it is getting cheaper. It’s easily powerful enough to run smart LED lights without wireless network nonsense. Plus, you can give your PoE switch its own dedicated UPS, and now your lights are all on battery backup.
It was born for a corporate IT environment for running VoIP phones and security cameras, and mostly ignored for residential customers. Good news is that used 48 port switches with full PoE are cheap on eBay.
I love PoE, but there are some hard limitations to that idea. Mainly cost per meter of cable, but also in the amount of runs that would need to be completed to accomplish that. I cant splice two ethernet cables together and run one to a nearby light or other device without a switch, which means more equipment or more cable to make it work. Also, being 48v, it will have a lower overall efficiency compared to direct wiring with 110-220v, especially with the higher resistance of ethernet vs 14ga romex. That being said, I’d love to see 48v dc in home outlets.
310m poe cat5 won’t be more as sixty bucks will it?
For CCA.
If you give me a couple pennys, a tootsie roll, and 24 hours, I could shit out a better cable for you.
Can I videotape that?
The cost has shot up and down post COVID. Cat6 is typically the better option as it uses thicker conductors. Cat6 is 23ga iirc. I paid $85 for 1000ft on my last project
I’d buy for that price :)
Oh boy do I have something for you. The single pair ethernet standards. Connect 8 devices on the same line as a bus.
That would only allow PoE+, which limits devices to 25.5W. Speed would be limited to 100Mbps. Still enough for lights, though.
Didn’t realize that was part of the spec. But wouldn’t that be 4 devices? 2 wires per device for tx/rx and power +/-.
No. It’s a single twisted pair wire to connect at least 8 devices over a minimum distance of 25m. However the speed is only 10MBit. The spec is called base10-t1s
If we’re talking about hiring someone to run AC wires, then the cost of extra equipment can be offset by the labor costs.
(I have definitely hired a master electrician for every outlet added to my house. Definitely.)
PoE is terrible. I threw mine away and went to 802.11ac wireless and it was 10x faster. The problem is the circuit breakers, washing machines, or anything that generates EMI screw with the quality. Ethernet>wifi>PoE, at least for most use cases.
Are you talking about the adapters that let you run network through your electrical circuits? Because that’s different from PoE. PoE is running power through the network cables so you get power and network with one plug, so kind of the opposite of that.
I can confirm that using electrical infrastructure for network is really not great.