I have a Draw Wire Linear Transducer that uses 4-20ma analog output.... I purchased a Current to Voltage 4-20mA to 0-10 volt converter (all are pictured)... After hours and hours of I can not figure out the wiring..... Can anyone provide some input on how I would wire the sensor to the converter and then the converter to the board.... PLEASE...
https://drive.google.com/open?id=1vV6dJXgAo-C7HGa_1GaqI-dv6Psy1j1a
Impossible to tell anything from that picture, I don't think you need that current to voltage converter, the UNO can do that.
Can you post a wiring diagram and links to your sensor and converter?
HowToPost
Such a conversion can be done using a single 250Ω resistor. 4-20mA signal produces 1-5V across that resistor, which can be directly read by an analog input.
Really,,, How would I wire that?
This is the only thing I can find as far as a wiring diagram.
Input Red = 24v+
Output Black = I-
The converter is really not providing consistent output...
https://drive.google.com/file/d/1z-Itvm0klBMlL59br8YGUni7p6RBXk5S/view?usp=sharing
wvmarle:
Such a conversion can be done using a single 250Ω resistor. 4-20mA signal produces 1-5V across that resistor, which can be directly read by an analog input.
marinek9:
Really,,, How would I wire that?
Have a look here.
The proposed solution enhances that OP's suggestion with some protection compnents, and also points out that a 220R may be easier to source than 250R
In that case the voltages of 0.88V and 4.4V would analogRead() as about 180 and 900.
One resistor could be dangerous for the Arduino if mistakes are made.
Better use a few more parts and Arduino's internal Aref for more stable readings.
This recent post explains it all.
Leo..
