@flameport I've just realised by coincidence I've previously watched your youtube channel including one on the sonoff strip down and you've been commenting on this thread. Thanks! Great vids btw !
Hi:
I understand commercially why companies would go down the propitiatory route but are there also mainstream open standard light switches that exist that are IP based using Ethernet (not wireless) and possibly even powered using PoE?
I wouldn't use ethernet for very low speed data like light switches, it seems overkill. You've plenty of other standards that may be more appropriate and use fewer wires: RS485, 1-wire, CANBUS etc...
If you used for instance 1-wire DS2408, you could poll each addressable light switch every 10ms to see if it changed. You could have a bunch of these daisy-chained through the house.