Adafruit AS5600 Magnetic Angle Sensor

Rotational sensing without a mechanical connection

by Liz Clark

published July 08, 2025, last edited September 04, 2025

posted in Sensors Adafruit Products Arduino Compatibles CircuitPython STEMMA

Beginner

Product guide

Arduino

Using the AS5600 breakout with Arduino involves wiring up the breakout to your Arduino-compatible microcontroller, installing the Adafruit_AS5600 library, and running the provided example code. You'll need a magnet to use the sensor.

High-strength 'rare earth' magnet

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Wiring

Wire as shown for a 5V board like an Uno. If you are using a 3V board, like an Adafruit Feather, wire the board's 3V pin to the sensor VIN.

Here is an Adafruit Metro wired up to the sensor using the STEMMA QT connector:

Board 5V to breakout VIN (red wire)
Board GND to breakout GND (black wire)
Board SCL to breakout SCL (yellow wire)
Board SDA to breakout SDA (blue wire)

Here is an Adafruit Metro wired up using a solderless breadboard:

Board 5V to breakout VIN (red wire)
Board GND to breakout GND (black wire)
Board SCL to breakout SCL (yellow wire)
Board SDA to breakout SDA (blue wire)

Library Installation

You can install the Adafruit_AS5600 library for Arduino using the Library Manager in the Arduino IDE.

Click the Manage Libraries ... menu item, search for Adafruit_AS5600, and select the Adafruit AS5600 library:

If asked about dependencies, click "Install all".

If the "Dependencies" window does not come up, then you already have the dependencies installed.

If the dependencies are already installed, you must make sure you update them through the Arduino Library Manager before loading the example!

Example Code

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/*!
 * @file AS5600_basic.ino
 *
 * Basic example for the Adafruit AS5600 library
 *
 * Written by Limor Fried for Adafruit Industries.
 * MIT license, all text above must be included in any redistribution
 */

#include <Adafruit_AS5600.h>

Adafruit_AS5600 as5600;

void setup() {
  Serial.begin(115200);
  while (!Serial)
    delay(10);

  Serial.println("Adafruit AS5600 Basic Test");

  if (!as5600.begin()) {
    Serial.println("Could not find AS5600 sensor, check wiring!");
    while (1)
      delay(10);
  }

  Serial.println("AS5600 found!");


  as5600.enableWatchdog(false);
  // Normal (high) power mode
  as5600.setPowerMode(AS5600_POWER_MODE_NOM);
  // No Hysteresis
  as5600.setHysteresis(AS5600_HYSTERESIS_OFF);

  // analog output
  as5600.setOutputStage(AS5600_OUTPUT_STAGE_ANALOG_FULL);

  // OR can do pwm!
  // as5600.setOutputStage(AS5600_OUTPUT_STAGE_DIGITAL_PWM);
  // as5600.setPWMFreq(AS5600_PWM_FREQ_920HZ);

  // setup filters
  as5600.setSlowFilter(AS5600_SLOW_FILTER_16X);
  as5600.setFastFilterThresh(AS5600_FAST_FILTER_THRESH_SLOW_ONLY);

  // Reset position settings to defaults
  as5600.setZPosition(0);
  as5600.setMPosition(4095);
  as5600.setMaxAngle(4095);

  Serial.println("Waiting for magnet detection...");
}

void loop() {
  if (! as5600.isMagnetDetected()) {
    return;
  }

  // Continuously read and display angle values
  uint16_t rawAngle = as5600.getRawAngle();
  uint16_t angle = as5600.getAngle();

  Serial.print("Raw: ");
  Serial.print(rawAngle);
  Serial.print(" (0x");
  Serial.print(rawAngle, HEX);
  Serial.print(") | Scaled: ");
  Serial.print(angle);
  Serial.print(" (0x");
  Serial.print(angle, HEX);
  Serial.print(")");

  // Check status conditions
  if (as5600.isAGCminGainOverflow()) {
    Serial.print(" | MH: magnet too strong");
  }
  if (as5600.isAGCmaxGainOverflow()) {
    Serial.print(" | ML: magnet too weak");
  }

  Serial.println();
  delay(50);
}

/*!
 * @file AS5600_basic.ino
 *
 * Basic example for the Adafruit AS5600 library
 *
 * Written by Limor Fried for Adafruit Industries.
 * MIT license, all text above must be included in any redistribution
 */

#include <Adafruit_AS5600.h>

Adafruit_AS5600 as5600;

void setup() {
  Serial.begin(115200);
  while (!Serial)
    delay(10);

  Serial.println("Adafruit AS5600 Basic Test");

  if (!as5600.begin()) {
    Serial.println("Could not find AS5600 sensor, check wiring!");
    while (1)
      delay(10);
  }

  Serial.println("AS5600 found!");


  as5600.enableWatchdog(false);
  // Normal (high) power mode
  as5600.setPowerMode(AS5600_POWER_MODE_NOM);
  // No Hysteresis
  as5600.setHysteresis(AS5600_HYSTERESIS_OFF);

  // analog output
  as5600.setOutputStage(AS5600_OUTPUT_STAGE_ANALOG_FULL);

  // OR can do pwm!
  // as5600.setOutputStage(AS5600_OUTPUT_STAGE_DIGITAL_PWM);
  // as5600.setPWMFreq(AS5600_PWM_FREQ_920HZ);

  // setup filters
  as5600.setSlowFilter(AS5600_SLOW_FILTER_16X);
  as5600.setFastFilterThresh(AS5600_FAST_FILTER_THRESH_SLOW_ONLY);

  // Reset position settings to defaults
  as5600.setZPosition(0);
  as5600.setMPosition(4095);
  as5600.setMaxAngle(4095);

  Serial.println("Waiting for magnet detection...");
}

void loop() {
  if (! as5600.isMagnetDetected()) {
    return;
  }

  // Continuously read and display angle values
  uint16_t rawAngle = as5600.getRawAngle();
  uint16_t angle = as5600.getAngle();

  Serial.print("Raw: ");
  Serial.print(rawAngle);
  Serial.print(" (0x");
  Serial.print(rawAngle, HEX);
  Serial.print(") | Scaled: ");
  Serial.print(angle);
  Serial.print(" (0x");
  Serial.print(angle, HEX);
  Serial.print(")");

  // Check status conditions
  if (as5600.isAGCminGainOverflow()) {
    Serial.print(" | MH: magnet too strong");
  }
  if (as5600.isAGCmaxGainOverflow()) {
    Serial.print(" | ML: magnet too weak");
  }

  Serial.println();
  delay(50);
}

Upload the sketch to your board and open up the Serial Monitor (Tools -> Serial Monitor) at 115200 baud. You'll see the AS5600 recognized over I2C. Then, take a magnet and rotate it above the sensor. You'll see the raw angle and scaled angle printed out to the Serial Monitor, which are 12-bit values. If the magnet is too close or too far from the sensor, you'll see a warning printed to the Serial Monitor.