All the sensors are connected to SCL and SDA.
There wasn't any error when uploading the code.
Checked using I2C scanner all addresses are different.
When using two sensors only the combination of MAX30100 and MPU6050 doesn't show any data on the serial monitor.
Code: Select all
#include <Wire.h>
#include "MAX30100_PulseOximeter.h"
#include <Adafruit_MLX90614.h>
#include <Adafruit_MPU6050.h>
#include <Adafruit_Sensor.h>
#define REPORTING_PERIOD_MS 1000
Adafruit_MLX90614 mlx = Adafruit_MLX90614();
Adafruit_MPU6050 mpu;
PulseOximeter pox;
// Time at which the last beat occurred
uint32_t tsLastReport = 0;
// Callback routine is executed when a pulse is detected
void onBeatDetected() {
Serial.println("♥ Beat!");
}
void setup() {
Serial.begin(115200);
pox.begin();
pox.setOnBeatDetectedCallback(onBeatDetected);
mlx.begin();
mpu.begin();
mpu.setAccelerometerRange(MPU6050_RANGE_8_G);
Serial.print("Accelerometer range set to: ");
switch (mpu.getAccelerometerRange()) {
case MPU6050_RANGE_2_G:
Serial.println("+-2G");
break;
case MPU6050_RANGE_4_G:
Serial.println("+-4G");
break;
case MPU6050_RANGE_8_G:
Serial.println("+-8G");
break;
case MPU6050_RANGE_16_G:
Serial.println("+-16G");
break;
}
mpu.setGyroRange(MPU6050_RANGE_500_DEG);
Serial.print("Gyro range set to: ");
switch (mpu.getGyroRange()) {
case MPU6050_RANGE_250_DEG:
Serial.println("+- 250 deg/s");
break;
case MPU6050_RANGE_500_DEG:
Serial.println("+- 500 deg/s");
break;
case MPU6050_RANGE_1000_DEG:
Serial.println("+- 1000 deg/s");
break;
case MPU6050_RANGE_2000_DEG:
Serial.println("+- 2000 deg/s");
break;
}
mpu.setFilterBandwidth(MPU6050_BAND_5_HZ);
Serial.print("Filter bandwidth set to: ");
switch (mpu.getFilterBandwidth()) {
case MPU6050_BAND_260_HZ:
Serial.println("260 Hz");
break;
case MPU6050_BAND_184_HZ:
Serial.println("184 Hz");
break;
case MPU6050_BAND_94_HZ:
Serial.println("94 Hz");
break;
case MPU6050_BAND_44_HZ:
Serial.println("44 Hz");
break;
case MPU6050_BAND_21_HZ:
Serial.println("21 Hz");
break;
case MPU6050_BAND_10_HZ:
Serial.println("10 Hz");
break;
case MPU6050_BAND_5_HZ:
Serial.println("5 Hz");
break;
}
Serial.println();
}
void loop() {
// Read from the sensor
pox.update();
// Grab the updated heart rate and SpO2 levels
if (millis() - tsLastReport > REPORTING_PERIOD_MS) {
Serial.print("Heart rate:");
Serial.print(pox.getHeartRate());
Serial.print("bpm / SpO2:");
Serial.print(pox.getSpO2());
Serial.println("%");
tsLastReport = millis();
delay(500);
}
sensors_event_t a, g, temp;
mpu.getEvent(&a, &g, &temp);
Serial.print("Accelerometer ");
Serial.print("X: ");
Serial.print(a.acceleration.x, 1);
Serial.print(" m/s^2, ");
Serial.print("Y: ");
Serial.print(a.acceleration.y, 1);
Serial.print(" m/s^2, ");
Serial.print("Z: ");
Serial.print(a.acceleration.z, 1);
Serial.println(" m/s^2");
Serial.print("Gyroscope ");
Serial.print("X: ");
Serial.print(g.gyro.x, 1);
Serial.print(" rps, ");
Serial.print("Y: ");
Serial.print(g.gyro.y, 1);
Serial.print(" rps, ");
Serial.print("Z: ");
Serial.print(g.gyro.z, 1);
Serial.println(" rps");
delay(500);
Serial.print("Ambient temperature = ");
Serial.print(mlx.readAmbientTempC());
Serial.print("°C");
Serial.print(" ");
Serial.print("Object temperature = ");
Serial.print(mlx.readObjectTempC());
Serial.println("°C");
Serial.print("Ambient temperature = ");
Serial.print(mlx.readAmbientTempF());
Serial.print("°F");
Serial.print(" ");
Serial.print("Object temperature = ");
Serial.print(mlx.readObjectTempF());
Serial.println("°F");
delay(500);
Serial.println("-----------------------------------------------------------------");
delay(1000);
}