The (short) scenario: I'm working through developing a project that will end up using RS-485 and Modbus RTU. So far I have been developing the master and two slaves (one at a time) using just TTL. Master and Slave 1 works. Master and Slave 2 works. Now I need to combine them, but would like to do s…

ATMega328 and 7400 chips

LarryD April 20, 2018, 7:28pm 2

Show us a good schematic of your circuit.

Show us a good image of your wiring.