Sensor de corriente ACS712 arduino LabVIEW

[Tizoc]

Buena tarde

Alguien de ustedes sabe cuál es la razón de que mi programa de arduino no funcione bien ya cuando lo tengo programado en LabVIEW?. En Arduino me funcioan perfecto,pero en LabVIEW no cambia el valor de la corriente que estoy sensando con el ACS712. Les agradezco,saludos.

[Nathan_B.]

You will need to provide more information about your setup.  What Arduino are you using?  Do you have the firmware installed your Arduino?  Are you using the correct baud rate?  The Mega 2560 uses a baud rate of 9600 (not 115200 like the Uno).

[Tizoc]

Thanks Nathan_B. Now I put the correct baud rate of 9600. I use the Mega 2560 and to have the LIFABASE for Labview 2009. Maybe the problem can be the convert method for the sensor. Now i seing that the real number sensor is ACS712T KLD 12AB but the number that Labview give me isn´t correct because I have a fluke for measurement current. How can do to convert with the correct method. Thanks a lot.

[Nathan_B.]

I guess you just need to find the correct conversion equation from voltage

to current.

[ara201]

how to convert voltage from ACS 712-20A to current in labVIEW?

I've tried to use this equation:

((analog read from ACS) - 2.5 ) : 0.1 = current

but actually im not sure with that.

[hrh1818]

I don't understand your formula.   "((analog read from ACS) - 2.5 ) : 0.1 = current"

You need a conversion method similar to the following.

RawValue = analogRead(analogIn);

Voltage = (RawValue / 1024.0) * 5000; // Gets you mV

Amps = ((Voltage - ACSoffset) / mVperAmp);

Where ACSoffset = 2500 mV and mV per amp = 100 mV /per amp for ACS712-20A

source  <http://henrysbench.capnfatz.com/henrys-bench/arduino-current-measurements/the-acs712-current-sensor-...>

hrh212