I have a serial network setup on RS 485. Each device in another Arduino that has a hard-coded address, sort of like a mini MAC address.
I want to periodically query the network to determine if there is a new Arduino. If I simply send a command I don't want all the Arduinos to reply so how would I set it up to add new devices one by one?
I just need a push in the right direction as I've hit a wall.