BNO055 BMP280 Sensors

This module combines two sensors on a single board:

• BNO055: 9-DOF absolute orientation sensor (accelerometer, gyroscope, magnetometer) with on-board sensor fusion.
• BMP280: high-precision barometric pressure and temperature sensor.

Perfect for robotics, inertial navigation, drones, environmental monitoring and IoT projects.

BNO055 + BMO280 Module

Features

• BNO055

  Feature	Description
  On-chip sensor fusion	quaternions, Euler angles, gravity vectors, etc.
  Accelerometer ranges	±2/4/8/16 g
  Gyroscope ranges	±125/250/500/1000/2000 °/s
  Magnetometer ranges	±1.3/1.9/2.5/4.0/4.7/5.6/8.1 gauss
  Protocol	I²C, UART (select via PS0/PS1)

• BMP280

  Feature	Description
  Pressure range	300…1100 hPa (±10…+1 m)
  Temperature accuracy	±1 °C
  Protocol	I²C, UART, SWD

Module Applications

Application	Description
📈 Portable weather station	Measures temperature, humidity, and pressure accurately.
🪂 Altimeter / variometer	Calculates altitude based on atmospheric pressure.
🧍 Posture tracking	Detects body tilt or rotation.
🛰️ Inertial navigation	Tracks movement and orientation without GPS.
🕹️ Augmented / virtual reality	Provides orientation for 3D environments.
🚁 Flight controller	Stabilization for drones or robots.
🤖 Gesture interface	Uses motion to control devices.
🌐 IoT environmental logging	Collects and transmits environmental conditions.

Example Code

#include <Wire.h>
#include <Adafruit_Sensor.h>
#include <Adafruit_BNO055.h>
#include <Adafruit_BMP280.h>
#include <utility/imumaths.h>

// BNO055: orientación y movimiento
Adafruit_BNO055 bno(55, 0x28, &Wire);

// BMP280: temperatura y presión
Adafruit_BMP280 bmp;
Adafruit_Sensor* bmp_temp = bmp.getTemperatureSensor();
Adafruit_Sensor* bmp_pressure = bmp.getPressureSensor();

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

  // Inicializar BNO055
  if (!bno.begin()) {
    Serial.println("{\"error\":\"BNO055 not detected\"}");
    while (1);
  }
  delay(1000);  // Estabilizar BNO055

  // Inicializar BMP280 en dirección 0x76
  if (!bmp.begin(0x76)) {
    Serial.println("{\"error\":\"BMP280 not detected at 0x76\"}");
    while (1);
  }

  bmp.setSampling(Adafruit_BMP280::MODE_NORMAL,
                  Adafruit_BMP280::SAMPLING_X2,
                  Adafruit_BMP280::SAMPLING_X16,
                  Adafruit_BMP280::FILTER_X16,
                  Adafruit_BMP280::STANDBY_MS_500);
}

void loop() {
  // Eventos del BNO055
  sensors_event_t orientation, gyro, linearAccel, magnetometer, accel, gravity;
  bno.getEvent(&orientation,    Adafruit_BNO055::VECTOR_EULER);
  bno.getEvent(&gyro,           Adafruit_BNO055::VECTOR_GYROSCOPE);
  bno.getEvent(&linearAccel,    Adafruit_BNO055::VECTOR_LINEARACCEL);
  bno.getEvent(&magnetometer,   Adafruit_BNO055::VECTOR_MAGNETOMETER);
  bno.getEvent(&accel,          Adafruit_BNO055::VECTOR_ACCELEROMETER);
  bno.getEvent(&gravity,        Adafruit_BNO055::VECTOR_GRAVITY);

  // BMP280: temperatura y presión
  sensors_event_t temp_event, pressure_event;
  bmp_temp->getEvent(&temp_event);
  bmp_pressure->getEvent(&pressure_event);

  // Calibración BNO055
  int8_t temp_bno = bno.getTemp();
  uint8_t sys, gyroCal, accelCal, magCal;
  bno.getCalibration(&sys, &gyroCal, &accelCal, &magCal);

  // JSON OUTPUT
  Serial.print("{");

  // BMP280
  Serial.print("\"bmp280\":{\"temperature\":"); Serial.print(temp_event.temperature, 2);
  Serial.print(",\"pressure\":"); Serial.print(pressure_event.pressure, 2); Serial.print("},");

  // BNO055 - orientación
  Serial.print("\"orientation\":{\"x\":"); Serial.print(orientation.orientation.x, 2);
  Serial.print(",\"y\":"); Serial.print(orientation.orientation.y, 2);
  Serial.print(",\"z\":"); Serial.print(orientation.orientation.z, 2); Serial.print("},");

  // BNO055 - giroscopio
  Serial.print("\"gyroscope\":{\"x\":"); Serial.print(gyro.gyro.x, 2);
  Serial.print(",\"y\":"); Serial.print(gyro.gyro.y, 2);
  Serial.print(",\"z\":"); Serial.print(gyro.gyro.z, 2); Serial.print("},");

  // BNO055 - aceleración lineal
  Serial.print("\"linear_accel\":{\"x\":"); Serial.print(linearAccel.acceleration.x, 2);
  Serial.print(",\"y\":"); Serial.print(linearAccel.acceleration.y, 2);
  Serial.print(",\"z\":"); Serial.print(linearAccel.acceleration.z, 2); Serial.print("},");

  // BNO055 - magnetómetro
  Serial.print("\"magnetometer\":{\"x\":"); Serial.print(magnetometer.magnetic.x, 2);
  Serial.print(",\"y\":"); Serial.print(magnetometer.magnetic.y, 2);
  Serial.print(",\"z\":"); Serial.print(magnetometer.magnetic.z, 2); Serial.print("},");

  // BNO055 - aceleración total
  Serial.print("\"acceleration\":{\"x\":"); Serial.print(accel.acceleration.x, 2);
  Serial.print(",\"y\":"); Serial.print(accel.acceleration.y, 2);
  Serial.print(",\"z\":"); Serial.print(accel.acceleration.z, 2); Serial.print("},");

  // BNO055 - gravedad
  Serial.print("\"gravity\":{\"x\":"); Serial.print(gravity.acceleration.x, 2);
  Serial.print(",\"y\":"); Serial.print(gravity.acceleration.y, 2);
  Serial.print(",\"z\":"); Serial.print(gravity.acceleration.z, 2); Serial.print("},");

  // Temperatura interna y calibración
  Serial.print("\"bno055_temp\":"); Serial.print(temp_bno); Serial.print(",");
  Serial.print("\"calibration\":{\"sys\":"); Serial.print(sys);
  Serial.print(",\"gyro\":"); Serial.print(gyroCal);
  Serial.print(",\"accel\":"); Serial.print(accelCal);
  Serial.print(",\"mag\":"); Serial.print(magCal); Serial.print("}");

  Serial.println("}");
  delay(500);
}