In this tutorial i am going to measure dc current using acs712 hall effect based linear current sensor and arduino uno.
Arduino hall effect sensor circuit.
We have one input which is the sensor and one output which is a led.
A hall effect sensor works on the principle of well hall effect.
Hall effect sensor with arduino circuit and code hall effect sensor module interfacing with arduino this module is used to detect the presence of magnetic.
The vout or signal pin of the hall effect sensor is connected to the arduino s interrupt pin digital pin 2.
Acs712 can measure current precisely and accurately if properly managed.
Acs acs arduino arduino projects current sensor arduino interfacing current transducer symbol hall effect current sensor circuit hall effect sensor mains current sensor share on tumblr monitoring the current flow in a device.
This sensor breakout consumes power from arduino power source 5 and gnd.
The vcc of the sensor is connected to arduino s 5v power pin.
We will then connect this ic to an arduino so that we the arduino can read the voltage output by the a1302 and we can display the readings to the computer screen.
The gnd of the sensor is connected to the gnd pin on the arduino.
The only primary difference is that a hall effect sensor requires a magnet to also be employed for it to detect changes while ir and ultrasonic sensors are able to function.
The complete arduino code is just few lines and it can be found at the bottom of this page which can be directly uploaded to your arduino board if you want to know how the program works read further.
A hall effect sensor can be used in most places where you would use an ultrasonic proximity detector or an infrared sensor to detect changes or movement in the environment.
Interfacing arduino and acs712 hookup.
As per the breakout application note hall effect current sensor connected with target load and output signal is connected with well known arduino s a0 analog input pin 0.
I have gone through various blogs on internet about interfacing acs712 current sensor with arduino and other microcontrollers.
Interfacing the hall effect sensor with arduino is really simple.
That is the anode connected to the hall effect sensor and the cathode with the black line on the arduino side.
If you remember the arduino waterflow sensor tutorial we implemented earlier the main component of the water flow sensor is the hall effect ic.
Simply speaking a hall effect sensor or ic detects motion position or change in magnetic field strength of either a permanent magnet an electromagnet or any.
Whenever it will be placed in the region of magnetic field then it will detect it and will give us the output.
The hall effect sensor we will use in this circuit is an a1302 hall effect sensor manufactured by allegro.
Here two hall effect sensors pinout given the a1321 range sensor gives analog out linear sensor and us1881 range sensor gives digital out both sensors can be easily interfaced with arduino board if we use digital hall effect sensor we need to give bias from 5v to the output terminal through 10kω resistor.
Hall effect sensor arduino code.
This ic can detect magnetic fields.
