• Current Sensor Carrier -30 to +30A

Current Sensor Carrier -30 to +30A

This board is a simple carrier of Allegro’s +/-30A ACS714 Hall effect-based linear current sensor. This version accepts a bidirectional current input with a magnitude up to 30 A and outputs a proportional analog voltage (66 mV/A) centered at 2.5 V with a typical error of +/-1.5%. It operates from 4.5 to 5.5 V and is intended for use in 5 V systems.

Quick Spec

  • Designed for bidirectional input current from -30 A to 30 A
  • Single 5.0 V supply operation
  • The robust sensor IC can survive up to five times the overcurrent condition
  • Conductive path internal resistance is typically 1.2 mΩ, very little power is lost in the board.
  • Use of a Hall effect sensor means the IC is electrically isolated
  • High accuracy and reliability: typical total output error of ±1.5%
  • Automotive-grade operating temperature range of -40°C to 150°C

Circuit Diagram


pololu current sensor arduino micro robotics

NOTE: This product is intended for use below 30 V. Working with higher voltages can be extremely dangerous and should only be attempted by qualified individuals with appropriate equipment and protective gear.

Resources

Connecting The Current Sensor To An Arduino

With no current the, the output voltage is 2.5V. For every extra amp of current in the positive direction, the voltage will go up 185 mV; for negative current, the output voltage will go down 185 mV per amp. For 0.67A, your output voltage would go up by about 124 mV, so your output voltage would be about 2.624V, which with a 10-bit reading and a 5V reference should be about 537 out of your ADC. Another way of looking at it is that every increment out of your ADC will correspond to about 27 mA. The zero-current reading should be about 512, but you should calibrate that for your system by looking at what you actually get at zero current.

Shipping List

  • 1 x Current Sensor Carrier -30 to +30A


Current Sensor Carrier -30 to +30A

  • Brand: Pololu Electronics
  • Product Code: 1187
  • Stock

    Warehouse Stock Status Location
    Centurion In Stock D78
    Stellenbosch In Stock C0247
  • R145.00 (Inc Tax: R166.75)


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