5-Minute Tutorial: Using Gravity 360 Degree Hall Angle Sensor for Angle Detection with Arduino

This tutorial demonstrates how to use hall angle sensor in 5 minutes. The sensors detect turn round and users can learn how to read the analog signal from the sensor to calculate the rotation angle.

Hardware Preparation

DFRduino UNO R3 x1
Gravity: IO Expansion Shield for Arduino V7.1 x1
Hall Angle Sensor x1
M-M/F-M/F-F Jumper wires x1

Software Preparation

Arduino IDE Click to Download Arduino IDE from Arduino®

Wiring Diagram

SEN0221 Gravity: 360 Degree Hall Angle Sensor Connection Diagram

Other Preparation Work

Sample Code

/*!
 * @file  hallAngleSensor.ino
 * @brief  This example The sensors detect turn round
 * @copyright  Copyright (c) 2010 DFRobot Co.Ltd (http://www.dfrobot.com)
 * @license  The MIT License (MIT)
 * @author  [email protected]
 * @version  V1.0
 * @date  2016-7-12
 */

void setup()
{
  Serial.begin(115200);
}

void loop()
{
  float analogValue = analogRead(A2);     //Voltage reading
  float amp = analogValue / 1024.0 * 360; //Angle calculation  (  UNO is a 10-bit AD )
  Serial.print("Angle:");
  Serial.println(amp);
  delay(500);
}

Result

The serial monitor shows the angle value.

Example Code for Arduino-Angle Detection