I want to have a remote monitoring unit send out a data stream of some repetitive sort, either pulses or data or some such, and then monitor that that is being received.
if there is garbled data, then a handshake of some sort to make sure there are no problems.
I was thinking that the mini on the remote sends our a pulse every couple seconds, then the uno in the house receives that and they both go merrily on their way.
if the pulse does not come, then the uno would send out a request and the mini would respond. and then they would go back to the mini sending out pulses at intervals.
is there a canned way to do this ? any suggestions ?
I will have power ground and 2 data lines. ideally, only one data line for a 3 wire connection.