On the first one, yeah, TI's got chips (so do a few other vendors), but I'm not competent at designing (or building) ethernet circuits, so I need someone else to put a 10Base-T1L PHY back to back with a 10Base-T PHY, and do those other things.
Pace1KL looks interesting, but the price (seems to be $129 each) is too high for me, especially since I'd need to supply PoE on both sides. In an ideal world, I'd get one unit which was powered and was a PSE (power sourcing equipment), and the other unit was a PD (powered device), so I didn't need to find a safe place to tap power where my line ends. Of course, in an even more ideal world, I'd have two pairs so I could run standard ethernet :)
Generally focused in the industrial space:
* https://e2e.ti.com/blogs_/b/analogwire/posts/how-10base-t1ls...
* https://www.altronix.com/products/Pace1KL
On the first one, yeah, TI's got chips (so do a few other vendors), but I'm not competent at designing (or building) ethernet circuits, so I need someone else to put a 10Base-T1L PHY back to back with a 10Base-T PHY, and do those other things.
Pace1KL looks interesting, but the price (seems to be $129 each) is too high for me, especially since I'd need to supply PoE on both sides. In an ideal world, I'd get one unit which was powered and was a PSE (power sourcing equipment), and the other unit was a PD (powered device), so I didn't need to find a safe place to tap power where my line ends. Of course, in an even more ideal world, I'd have two pairs so I could run standard ethernet :)
Single-pair wire can deliver power in addition to 10Mbps:
* https://en.wikipedia.org/wiki/Power_over_Ethernet#PoDL
* https://blog.siemon.com/standards/ieee-p802-3cg-10-mbs-singl...
Not sure what kind of distance-dropoff trade-off there is:
> For example, at 55V and 1000m, 7.7W can be delivered to the endpoint. At shorter distances, 55V and 150m, 52W can be delivered to the endpoint.
* https://ethernetalliance.org/wp-content/uploads/2021/07/EA_T...
Eval board here:
* https://www.analog.com/en/products/adin1100.html#product-eva...
All of this is meant for bulk purchases in the industrial/embedded/automation/SCADA space, so small-batch hobbyist purchases may be expensive.