Good morning,

I would like to use an Arduino Duemilanove to read the voltage signal generated from a current sensor (CLSA2CD). The datasheet for this sensor can be found at http://www.scienceshareware.com/articles/measuring-current/csla2cd-current-sensor.pdf.

The problem is that the sensor requires a supply voltage of 6 to 12v. The signal output voltage is half the supply when no current flows through the sensor. I am using a 8v regulator for its supply, so the signal voltage may range from 4v (no current sensed) all the way to about 6v (about 60 amps).

Unless I'm mistaken, the arduino's analog pin can detect from 0v to 5v. So it would only accurately provide me data up to the 5v signal mark.

My questions are:

a. Would a voltage divider be a good solution to reduce the signal voltage to a range the Arduino can read? If so,

b. what would be the best resistor combination to use?

If there are better solutions than a voltage divider then please share.

Thanks very much!

Good morning,

I would like to use an Arduino Duemilanove to read the voltage signal generated from a current sensor (CSLA2CD). The datasheet for this sensor can be found here.

The problem is that the sensor requires a supply voltage of 6 to 12v. The signal output voltage is half the supply when no current flows through the sensor. I am using a 8v regulator for its supply, so the signal voltage may range from 4v (no current sensed) all the way to about 6v (about 60 amps).

Unless I'm mistaken, the arduino's analog pin can detect from 0v to 5v. So it would only accurately provide me data up to the 5v signal mark.

My questions are:

1. Would a voltage divider be a good solution to reduce the signal voltage to a range the Arduino can read? If so,

2. what would be the best resistor combination to use?

If there are better solutions than a voltage divider then please share.

Thanks very much!