How do I connect several Arduinos through RS485 with the SN75176 chip? Answered
Hello, I want to connect several Arduinos together in a star network (1 Master, several Slaves), but they're too far apart, so I can't use I2C.
I researched a bit and found that I can use the serial protocol RS485 and that I can use the SN75176 or the MAX485 chips to do it.
Being the MAX485 more expensive than the SN75176, I bought the latter.
My problem is: now that I have the SN75176 (I have two, actually), what do I do?
I have no clue whatsoever.
I found some circuits for the MAX485, but I don't quite get how I should connect them to the Arduino.. Anyway, the chip I have is the SN75176...
The only thing I find with Google is about DMX - for lights and stuff like that -, but I'm not interested in that.
I just want several Arduinos to send data gathered from temperature and humidity sensors to another Arduino...
Thank you very much. :)