Hi my name is Mikernick and I am new to Arduino and the forum.
I need a device that allows me to write data from a single RS232 port to 1 of 4 RFID writers. this will be done in sequence.
That is my program enters a subroutine and writes data with a date time stamp to RFID writer 1. it the re-enters the subroutine and writes similar data to RFID writer 2.
This sequence is repeated 4 times.
Can anybody assist with a device I can use that will programmtically switch this output.
Thanks. 