Why don't I see more posts about eia-485? RS-485 - Wikipedia I would like to use this on the spare (yellow and black) telephone wires for home automation/security but am wary because there aren't many posts about people using it. Are there problems I have yet to read about?
No problems !
It's really easy to use rs485 drivers to extend serial coms. IC are very cheap, an dusing it is quite easy.
Even old post about rs485 will learn you a lot of things.
What is your project with 485 ?
Home security/automation specifically. Moving up in the world from an apartment to a house, and to start, I would like to monitor some of the HVAC equipment, then add security, etc, as I go and in time. I planned on using mcu's but wireless seems like a waste for a three floor house with all this unused phone cabling. I realize I would need to terminate the lines.