Arduino Nano 33 Sense Rev2

What is theArduino IMUNano sensor?

33

IMUSense stands for: inertial measurement unit. It is an electronic device that measures and reports a body's specific force, angular rate and the orientation of the body, using a combination of accelerometers, gyroscopes, and oftentimes magnetometers. Know more.

LibraryRev2?

The IMU system on the Arduino Nano 33 BLE Sense Rev2 (often called Nano 33 Sense Rev2) is a combinationcompact, oflow-power twoIoT modules,and sensor-rich development board designed for machine learning, audio processing, motion detection, and environmental sensing.

It’s the 6-axissuccessor BMI270, andto the 3-axisoriginal BMM15.

To use the IMU (inertial measurement unit) in Nano 33 BLE Rev2Sense, improving performance, accuracy, and sensor reliability. Know more.

Rev1 vs Rev2

Component	Rev1	Rev2
IMU	LSM9DS1 (9-axis)	BMI270 (6-axis) + BMM150 (3-axis)
Temp & Humidity Sensor	HTS221	HS3003
Microphone	MP34DT05	MP34DT06JTR
Power Regulator	MPM3610	MP2322
VUSB Jumper	No	Yes
USB / SWD Test Points	No	Yes

Install board packages

1. Go to Tools - Board - Board Management
2. Search for Arduino Mbed OS Nano Boards
3. Choose and install the latest version
4. It may take a few minutes.
5. When it's done, you should be able to choose Arduino Nano 33 BLE
Sense

Rev2, you

Library Changes from Rev1 to useRev2

theArduino_BMI270_BMM150libraryofwhich is used in all example code.

Replace #include <Arduino_LSM9DS1.h> with #include <Arduino_BMI270_BMM150.h> in all existing codes if you are using

For

moreinformationlibrariesforNANO33SENSE REV2, please visit here.

Getting started - Accelerometers

To

detectrotationsandspeed.

#include "Arduino_BMI270_BMM150.h"

float x, y, z;
int degreesX = 0;
int degreesY = 0;

void setup() {
  Serial.begin(9600);
  while

Serial.println("Started"); ifto initialize IMU!"); whilesamplerate

Sensor insteadType	Rev1 Arduino_LSM9DS1Library	Rev2 boards. Library
IMU about(9-axis)	LSM9DS1	Arduino_BMI270_BMM150
Temperature & GyroscopesHumidity	Arduino_HTS221	Arduino_HS300x
Microphone (!Serial);PDM)	MP34DT05 (!IMU.begin())generic {PDM Serial.println("Failedlibrary)	MP34DT06JTR (1);same }PDM Serial.print("Accelerometerinterface)

= "); Serial.print(IMU.accelerationSampleRate()); Serial.println(" Hz"); } void loop() { float x, y, z; if (IMU.accelerationAvailable()) { IMU.readAcceleration(x, y, z); if(x > 0.1){ x = 100*x; degreesX = map(x, 0, 97, 0, 90); Serial.print("Tilting up "); Serial.print(degreesX); Serial.println(" degrees"); } if(x < -0.1){ x = 100*x; degreesX = map(x, 0, -100, 0, 90); Serial.print("Tilting down "); Serial.print(degreesX); Serial.println(" degrees"); } if(y > 0.1){ y = 100*y; degreesY = map(y, 0, 97, 0, 90); Serial.print("Tilting left "); Serial.print(degreesY); Serial.println(" degrees"); } if(y < -0.1){ y = 100*y; degreesY = map(y, 0, -100, 0, 90); Serial.print("Tilting right "); Serial.print(degreesY); Serial.println(" degrees"); } } }

Getting started - Magnetometer

To detect magnetic fields.

#include "Arduino_BMI270_BMM150.h"
float x,y,z, ledvalue;

void setup() {
  if (!IMU.begin()) {
    Serial.println("Failed to initialize IMU!");
    while (1);
  }
}

void loop() {
  
  // read magnetic field in all three directions
  IMU.readMagneticField(x, y, z);
  
  if(x < 0)
  {
    ledvalue = -(x);
  }
  else{
    ledvalue = x;
  }
  
  analogWrite(LED_BUILTIN, ledvalue);
  delay(500);
}