Hi all!
i m a beginner in Microcontroller and i want to know how can i create a Bus system for connect 1040 AVR or PIC microcontrollers to my Arm board whats your idea , you think i must use RS485 or another system please guide me?
my big project is control of opening and closing 1040 doors that every door have a serial number and my user enter door number and his password to open his door.what system is better here, my distance from doors is at most 20 to 30 meters thanks a lot.
i m a beginner in Microcontroller and i want to know how can i create a Bus system for connect 1040 AVR or PIC microcontrollers to my Arm board whats your idea , you think i must use RS485 or another system please guide me?
my big project is control of opening and closing 1040 doors that every door have a serial number and my user enter door number and his password to open his door.what system is better here, my distance from doors is at most 20 to 30 meters thanks a lot.