ACS712 Low Current Sensor Hookup Guide

This Tutorial is Retired!

Note: This tutorial is for the ACS712 Current Sensor Breakout Boards. If you are using either of the newer ACS723 Breakout Boards, please refer to the new Current Sensor Breakout (ACS723) Hookup Guide.

View the updated tutorial: Current Sensor Breakout (ACS723) Hookup Guide

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Contributors: AGlass0fMilk

Resources and Going Further

The ACS712 sensor is ideal if you need to measure a small to moderate amount of current, especially if it's AC current! For more information about the ACS712, check out the links below:

If you don't need electrical isolation and want to measure smaller currents, check out the INA169 Breakout Board. And for even higher power applications, check out the Non-Invasive Current Sensor - 30A.

SparkFun Current Sensor Breakout - INA169

SEN-12040
$13.93

Non-Invasive Current Sensor - 30A

SEN-11005
$15.95

For more power related learning, check out the tutorials below:

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Learn how to use the enclosed RTK Express product to achieve millimeter level geospatial coordinates.