hello all, I am creating a small system of temperature and humidity detection using arduino in different places located several tens of meters between them. So that the temperature sensors lose the signal after a few meters would then implement a system in such a way that the sensors communicate with arduino via a RS485 cable. so I have to create an electronic circuit where I connect the temp sensor. an ATtiny85 which sends the read data to a SN75176 then using a cable rs485 I connect to another SN75176 installed on arduino.
My problem is that I do not know how to connect the pins of the ATtiny85 pin SN75176. Have you by any chance a wiring diagram? My project is right? Other electronic parts are missing?