How to make a circuit for voltage and current measurement using Arduino and ACS712, ADS1015. The ADS1015 is a 12-bit analog-to-digital converter. Equipped with i2c bus and 4 channels A0-4. 

How to make a circuit for voltage and current measurement using Arduino and ACS712, ADS1015. The ADS1015 is a 12-bit analog-to-digital converter. Equipped with i2c bus and 4 channels A0-4. What is very important is also have "Internal Low-Drift Voltage Reference", which significantly simplifies the construction of precision measuring systems. ACS712 is the circuit for measuring the current using a hall effect. My version measures current from -30A to 30A.

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Arduino - voltage and current measurement ACS712, ADS1015