Ac Current Measurement Using Arduino And Acs712

For this post tutorial project i am going to measure only dc current.
Ac current measurement using arduino and acs712. You just need make change in code but the rest of the concept. Dc current measurement using acs712 current sensor and arduino schematic and proteus simulation for dc current measurement is given below. As shown on lcd first line is showing measured adc value and second line is showing voltage and third line is showing measured which is exactly the same current we measured with virtual ampere meter in proteus. You can not use the below formula to measure alternating current with acs712 hall effect current sensor.
Formula which i derived and explained in the tutorial is only for direct current measurement. Simplified arduino ac current measurement using acs712 hall effect sensor. In this tutorial you will learn how to design alternating current measurement system using acs712 hall effect current sensor and arduino uno r3 but you can apply same concept to arduino mega pic microcontroller 8051 microcontroller or avr microcontroller. Ac current measurement using acs712 hall effect current sensor and arduino.
This is a simplified approach to my prior instructable regarding measuring ac current with the acs712 current sensor linksimplifications include. Please be careful if you re using the power line.