It is the next.
* PCB for relay : one or three type of relays ???? help me (see picture)
* ARDUINO Shield : adapter for Breadboard with 3,3v 5v and Vin (10V)
* ATM328 with usb interface (ARDUINO) or normal programmer
* Negatif power (-Vin or -5v) on other Breadboard line.
* RS232 and RS485 on same PCB (project) DB9 male or femelle ???? help me