Hello, guys! My name is Luis, and I have some experience with coding and Arduino. I'm trying to program the BNO055 for a rocket flight computer, but when I plug in the power to my Arduino Uno Minima R4, the output values of the sensor are all 0. This also happens in the example given in the Adafruit library (#include <Adafruit_BNO055.h>). I tried to search online, but I can't understand what's going on. If someone could help me, I would be very grateful.
This is the code from the library:
#include <Wire.h>
#include <Adafruit_Sensor.h>
#include <Adafruit_BNO055.h>
#include <utility/imumaths.h>
/* This driver uses the Adafruit unified sensor library (Adafruit_Sensor),
which provides a common 'type' for sensor data and some helper functions.
To use this driver you will also need to download the Adafruit_Sensor
library and include it in your libraries folder.
You should also assign a unique ID to this sensor for use with
the Adafruit Sensor API so that you can identify this particular
sensor in any data logs, etc. To assign a unique ID, simply
provide an appropriate value in the constructor below (12345
is used by default in this example).
Connections
===========
Connect SCL to analog 5
Connect SDA to analog 4
Connect VDD to 3.3-5V DC
Connect GROUND to common ground
History
=======
2015/MAR/03 - First release (KTOWN)
*/
/* Set the delay between fresh samples */
uint16_t BNO055_SAMPLERATE_DELAY_MS = 100;
// Check I2C device address and correct line below (by default address is 0x29 or 0x28)
// id, address
Adafruit_BNO055 bno = Adafruit_BNO055(55, 0x28, &Wire);
void setup(void)
{
Serial.begin(115200);
while (!Serial) delay(10); // wait for serial port to open!
Serial.println("Orientation Sensor Test"); Serial.println("");
/* Initialise the sensor */
if (!bno.begin())
{
/* There was a problem detecting the BNO055 ... check your connections */
Serial.print("Ooops, no BNO055 detected ... Check your wiring or I2C ADDR!");
while (1);
}
delay(1000);
}
void loop(void)
{
//could add VECTOR_ACCELEROMETER, VECTOR_MAGNETOMETER,VECTOR_GRAVITY...
sensors_event_t orientationData , angVelocityData , linearAccelData, magnetometerData, accelerometerData, gravityData;
bno.getEvent(&orientationData, Adafruit_BNO055::VECTOR_EULER);
bno.getEvent(&angVelocityData, Adafruit_BNO055::VECTOR_GYROSCOPE);
bno.getEvent(&linearAccelData, Adafruit_BNO055::VECTOR_LINEARACCEL);
bno.getEvent(&magnetometerData, Adafruit_BNO055::VECTOR_MAGNETOMETER);
bno.getEvent(&accelerometerData, Adafruit_BNO055::VECTOR_ACCELEROMETER);
bno.getEvent(&gravityData, Adafruit_BNO055::VECTOR_GRAVITY);
printEvent(&orientationData);
printEvent(&angVelocityData);
printEvent(&linearAccelData);
printEvent(&magnetometerData);
printEvent(&accelerometerData);
printEvent(&gravityData);
int8_t boardTemp = bno.getTemp();
Serial.println();
Serial.print(F("temperature: "));
Serial.println(boardTemp);
uint8_t system, gyro, accel, mag = 0;
bno.getCalibration(&system, &gyro, &accel, &mag);
Serial.println();
Serial.print("Calibration: Sys=");
Serial.print(system);
Serial.print(" Gyro=");
Serial.print(gyro);
Serial.print(" Accel=");
Serial.print(accel);
Serial.print(" Mag=");
Serial.println(mag);
Serial.println("--");
delay(BNO055_SAMPLERATE_DELAY_MS);
}
void printEvent(sensors_event_t* event) {
double x = -1000000, y = -1000000 , z = -1000000; //dumb values, easy to spot problem
if (event->type == SENSOR_TYPE_ACCELEROMETER) {
Serial.print("Accl:");
x = event->acceleration.x;
y = event->acceleration.y;
z = event->acceleration.z;
}
else if (event->type == SENSOR_TYPE_ORIENTATION) {
Serial.print("Orient:");
x = event->orientation.x;
y = event->orientation.y;
z = event->orientation.z;
}
else if (event->type == SENSOR_TYPE_MAGNETIC_FIELD) {
Serial.print("Mag:");
x = event->magnetic.x;
y = event->magnetic.y;
z = event->magnetic.z;
}
else if (event->type == SENSOR_TYPE_GYROSCOPE) {
Serial.print("Gyro:");
x = event->gyro.x;
y = event->gyro.y;
z = event->gyro.z;
}
else if (event->type == SENSOR_TYPE_ROTATION_VECTOR) {
Serial.print("Rot:");
x = event->gyro.x;
y = event->gyro.y;
z = event->gyro.z;
}
else if (event->type == SENSOR_TYPE_LINEAR_ACCELERATION) {
Serial.print("Linear:");
x = event->acceleration.x;
y = event->acceleration.y;
z = event->acceleration.z;
}
else if (event->type == SENSOR_TYPE_GRAVITY) {
Serial.print("Gravity:");
x = event->acceleration.x;
y = event->acceleration.y;
z = event->acceleration.z;
}
else {
Serial.print("Unk:");
}
Serial.print("\tx= ");
Serial.print(x);
Serial.print(" |\ty= ");
Serial.print(y);
Serial.print(" |\tz= ");
Serial.println(z);
}
