This is a problem i was working out in my head (inspired my a earlier problem). There is no code or device written fr it (yet). I am just trying to figure out the best way to do it.
8 "satellite" Uno boards.
1 "master" Uno board.
All 9 boards communicate via Serial (not I2C, SPI, etc). The "satellite" boards send their sensor data to the "master"
one at a time: Round Robin.
I am trying to see how I can "hook" one of the 8 "satellite" board's UART to the "master's" UART one at a time, this way the master board can get a copy of any board's data, then move on t the next board and so on. I could of course make a mechanical disk that can rotate slowly with brushed contacts and all as a rotary switch might do.
But I rather do this electronically: solid state technique to open a exclusive channel for each satellite board one at a time to talk to the master.
I tried with transistors but did not work out.
Any help is apreciated.