How to read a rs485 sensor

Projects Networking, Protocols, and Devices
1

Hi,

I have a DO (dissolved oxygen) sensor that communicate by RS485, that sensor has four pins; V+, GND, A and B. So my question is, Do someone know how to read the sensor value with arduino? Its my first time using this sensor and that sensor comes with a "Intelligent DO Transmitter" I think I can use it without the transmitter connecting directly to the arduino or using a RS485 conversor?

Thanks :slight_smile:

2

Use an RS485 interface, like this one.

3

Now that you know the hardware format, you will need to determine which protocol the software is using.