# How use ACS712 current sensor?

How use ACS712 current sensor? For the ACS712 current sensor, it uses indirect sensing. The direct sensing uses Ohm’s law to measure the voltage drop across the wire when current flows through it. In indirect

## How use ACS712 current sensor?

For the ACS712 current sensor, it uses indirect sensing. The direct sensing uses Ohm’s law to measure the voltage drop across the wire when current flows through it. In indirect sensing, the Faraday’s law or Ampere law is used to measure the current by calculating the magnetic field.

What is current sensor module?

The 30A range Current Sensor Module ACS712 consists of a precise, low-offset, linear Hall circuit with a copper conduction path located near the surface of the die. Applied current flowing through this copper conduction path generates a magnetic field in which the Hall IC converts into a proportional voltage.

What is the supply voltage of ACS712?

The ACS712 is a 5V device, and must be connected to the VU pin on the MBED. The 5 amp version of the ACS712 has an output range of 1.5-3.4 volts….Usage.

ACS712 Breakout MBED Circuit under test
Vout Analog pin (p18)
FILT 1nF capacitor to ground
GND GND
+ Loop Positive side of wire

### Can Arduino read voltage?

For Arduino Uno, voltages can be read in the range of 0-5V. These 0-5V values are divided into 1023 equal parts. If the voltage is 3V, for example, “614” is the closest value.

Can Arduino read current?

The answer is yes, it’s possible. You have to do it in two steps. First read the current as voltage using analogue pins and second draw it on a display. As for the second step there are a lot of modules you can buy or you can do it yourself with any display and digital lines from arduino.

How does current sensor work?

How do current sensors work? When current flows through a conductor, it creates a proportional magnetic field around the conductor. The sensor then outputs a certain voltage or current that a meter connected to the sensor can read and translate into the amount of current flowing through the conductor.

#### What is the purpose of current sensor?

A current sensor is a device that detects electric current in a wire and generates a signal proportional to that current. The generated signal could be analog voltage or current or a digital output.