Temperature Pressure Humidity v2

A temperature, pressure and humidity sensor based on the BME280.

Library

Go to the library manager and install the required libraries.

1. Adafruit_Sensor
2. Adafruit_BME280

Autonomo Example

Use the I2C connector, marked as SDA/SCL.

#include <Wire.h>
#include <Adafruit_Sensor.h>
#include <Adafruit_BME280.h>

#define SEALEVELPRESSURE_HPA (1013.25)

Adafruit_BME280 bme; // I2C

void setup() {
  SerialUSB.begin(9600);
  SerialUSB.println(F("BME280 test"));

  if (!bme.begin()) {
    SerialUSB.println("Could not find a valid BME280 sensor, check wiring!");
    while (1);
  }
}

void loop() {
    SerialUSB.print("Temperature = ");
    SerialUSB.print(bme.readTemperature());
    SerialUSB.println(" *C");

    SerialUSB.print("Pressure = ");

    SerialUSB.print(bme.readPressure() / 100.0F);
    SerialUSB.println(" hPa");

    SerialUSB.print("Approx. Altitude = ");
    SerialUSB.print(bme.readAltitude(SEALEVELPRESSURE_HPA));
    SerialUSB.println(" m");

    SerialUSB.print("Humidity = ");
    SerialUSB.print(bme.readHumidity());
    SerialUSB.println(" %");

    SerialUSB.println();
    delay(2000);
}

Schematic