RS485 Modbus Temperature and Humidity sensor

Using Arduino Project Guidance
1

Hey ppl,
I am struggling with two RS485 temperature and humidity sensors and connecting them with my arduino.

  1. Is it possible to use this: DSD TECH SH-U12 RS485 to TTL 5V Brett with MAX13487 Chip?
  2. Can you suggest something else (the senros have 4 wires)?
  3. These are the sensros - RS485 Modbus Water Proof Temperature Humidity Sensor Probe
2

Given you use a 5V Arduino: yes.

Your forgot the link behind that. Also provide a link to the manual you got. If you didn't get a manual throw it away and buy from a vendor where you get a manual. Accessing a Modbus device without a manual is almost impossible.

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279851563_335270442040765_6837304975508667257_n
279851563_335270442040765_6837304975508667257_n851×3098 294 KB

This is the only info i got on the sensors.
My main issue is that the rs485 module has only 3 connections for out (GND, B-, A+) while the sensor has 4 wires (Power+, power-, A+, A-)
280062085_521708216099203_3635371762373261396_n
280062085_521708216099203_3635371762373261396_n1072×2160 196 KB

Thanks for the help =)

4

This should be sufficient.

Power+ and power- is the power supply of the sensor while A+ connects to A+ and A- connects to B- on the converter.

You still didn't tell us what exact type of Arduino you're using.

5

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