Arduino Current Measurements
Measuring Power and Capacity
If you’re measuring power or battery capacity, measuring current will likely be one of the measurements you include. Fortunately, there are several devices on the market to help you to accomplish this.
I’ve played with a few and the articles listed below will introduce you to them.
ACS712 Current Module User Manual
This manual for the ACS712 Current module provides an overview, specs, connections and the datasheet for the Allegro chip upon which is based.
The module comes in three flavors: 5A, 20A and 30A.
Its not an overly complicated device. You just need to know how to interpret it.
READ THIS ARTICLEACS712 Current Module Arduino Tutorial
Using an ACS712 Current Sensor with your Arduino is really simple stuff.
This article provides you with sample code and drawings.
READ THIS ARTICLEAC Current with an ACS712 Tutorial
If you’re interested in how much power your AC powered widget is using, you will need to measure the current.
This tutorial shows you how to use your Arduino with and ACS712 to do just that.
There’s a little basic theory here, but not too much. Just enough to get you started.
READ THIS ARTICLEINA219 Arduino Current and Voltage Sensor Tutorial
This little device measures both current and voltage. It therefore gives you the ability to measure power.
The current range is up to 3.2A.
Voltages up to 26 volts can be measured as well
READ THIS ARTICLETA12-100 Arduino AC Current Sensor Tutorial
You are able to measure AC current by passing a wire through the center of the current transformer and measuring the voltage across a resistor place at the transformer output.
This device is good for up to 5A.
The tutorial shows how to hook it up and make use of it immediately.
READ THIS ARTICLEMAX471 Arduino Current Sensor Tutorial
Learn how to put this 3 amp current sensor to us in your next project.
The MAX471 is a high side sensor that is easy to implement in code.
Includes drawings, tutorial and sketch.
READ THIS ARTICLEMAX471 Arduino Power Meter
Measuring power requires at least two of the three variables found in Ohms law.
The MAX471 measures both current and voltage.
With these values, you can measure power
READ THIS ARTICLEACS758 Arduino Current Measurement Tutorial
The Allegro ACS758 has ranges from 50A to 200A.
This tutorial will allow provides a basic functional description and shows how to make a current measurement using an ACS758.
Includes pin outs, tutorial and sketch.
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