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257 points voxadam | 3 comments | 16 Oct 25 14:09 UTC | HN request time: 0s | source

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skopje ◴[22 Oct 25 00:53 UTC] No.45663732[source]▶

PoE is awesome. My custom home security system is all CCTV PoE with a gstreamer backend running on four-core fanless linux box. Way to go. Complete control. No batteries, no wares spying on me, no personal data getting scraped by big guys. (Cloud connectivity sucks because I have segmented mp4s and jogging through them hurts but I only care for events after they happen, not while they happen.)

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shadowpho ◴[22 Oct 25 03:44 UTC] No.45664711[source]▶

>>45663732 #

Poe is great for many things, but it’s not as efficient as direct connection (for both low and high power.)

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rjdj377dhabsn ◴[22 Oct 25 07:31 UTC] No.45665889[source]▶

>>45664711 #

Why's that?

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1. jansper39 ◴[22 Oct 25 08:53 UTC] No.45666423[source]▶

>>45665889 #

You have to convert the power to 48v and back down to whatever you need on the other end which has losses, plus you have losses over the cable too.