How to Measure AC Current using Hall Effect Sensor with Arduino or other common Microcontrollers

Objective: This Instructable shows how making an interface box that, when spliced into an extension cord, allows common microcontrollers like Arduino to measure AC current as a DC voltage signal proportional to AC current. My specific application is measuring refrigerator energy usage.The challenge...

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from Instructables: exploring - technology - robots http://ift.tt/1vr5R2O

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