Yo! This project is still a Work In Progress. Instructions, board layouts and BOM might change!
Universal Inputs Modbus Module
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Attribution-ShareAlike (CC-BY-SA)
Created:
4 years ago
Updated:
4 years ago
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UMI6R2

Universal modbus inputs module

jatel.sk

Specification:
Supply: 12 - 30V / 50mA
Core: Arduino Nano
Number of inputs: 6
Input types: TTL / TTL with pull-up 2k2 / 0-10V / 1-10V / 0-20mA / 4-20mA
Number of outputs: 2
Output types: relay contact 10A/240VAC
Communication: Modbus RTU 485
Mounting: DIN 4M

The firmware for this board is not yet available and therefore the board is not even tested!
I'm looking for a person to collaborate on writing an FW for the UMI6R2 board in the Arduino IDE.

Description

Low cost universal modbus controll unit for low cost sensors and actuators from China:
NTC
Hall Flow Sensor
DHT22
DS18B20
Pressure Sensor
Electric Valve
Electric Solenoid Valve
etc...