I don't need simultaneous communication in both directions, but I do need communication in both directions. I only say this because I do not think there will be any overlapping instructions being sent from either end, therefore half-duplex should be fine. I say I do not "think" because the system is not fully developed and I have not thought through every single avenue of communication, but as far as I have come so far, I can't see there being a need for simultaneous communication.
I looked up the MX614 and the 73K302 and they both seem reasonable, although they state they are made for telephone or dial-up lines, is it still OK that I would be using them with a straight DC power line?
Please excuse my ignorance on this topic, but while I probably could figure out how to interface these chips with my arduino, how do I actually:
1) Put one of these things on either end of the power line?
2) Interface the little chip with the fat power line?
As far as 1) goes, it seems the 73K302 at least uses a simple TX and RX line, so I guess you would do the typical setup there (assuming those are the lines that transmit across the power line). But, when it comes to 2), how do I actually connect them up? I realize I'm pretty sure I'm putting this thing somewhere in parallel with the line, but it is the physical parts that stump me. I realize this may be a little vague, but all my knowledge is theory with no practice, as in I might be able to know everything about how the Bell 202 interface works as well as these microchips, but actually using them is a different story (when it comes to actually putting something together in the real world). Unfortunately I don't completely know everything about those chips yet but I will do some reading.