BMP280 not working


I am doing a project where I use an Arduino Nano and a pressure and temperature sensor from Adafruit (BMP280).
It turns out that I can’t get readings, the monitor either gives a sensor error, or says it isn’t connected. I’ve experimented with two breadboards, two Arduinos and two different sensors. I have already tested the connections with a multimeter and they all have power.
Going to the code, I already tested the example of the library and I also tested code provided by a teacher and from the internet and nothing. I suspect that the IDE is not getting the libraries but I can’t be sure.

Thanks in advance for any help

Boa tarde

Estou a fazer um projeto onde utilizo um Arduino Nano e um sensor de pressão e temperatura da Adafruit (BMP280).
Acontece que não consigo obter leituras, o monitor ou dá erro do sensor, ou diz que não está ligado. Já experimentei com duas breadboard, dois arduinos e dois sensores diferentes. Já testei as ligações com um multímetro e todas passam corrente.
Indo para o código, já testei o exemplo da biblioteca e também já testei código fornecido por um professor e que encontrei online e nada. Desconfio que o IDE não esteja a inserir as bibliotecas mas não consigo ter a certeza.

Agradeço desde já qualquer ajuda

  This is a library for the BMP280 humidity, temperature & pressure sensor

  Designed specifically to work with the Adafruit BMP280 Breakout

  These sensors use I2C or SPI to communicate, 2 or 4 pins are required
  to interface.

  Adafruit invests time and resources providing this open source code,
  please support Adafruit andopen-source hardware by purchasing products
  from Adafruit!

  Written by Limor Fried & Kevin Townsend for Adafruit Industries.
  BSD license, all text above must be included in any redistribution

#include <Wire.h>
#include <SPI.h>
#include <Adafruit_BMP280.h>

#define BMP_SCK  (13)
#define BMP_MISO (12)
#define BMP_MOSI (11)
#define BMP_CS   (10)

Adafruit_BMP280 bmp; // I2C
//Adafruit_BMP280 bmp(BMP_CS); // hardware SPI
//Adafruit_BMP280 bmp(BMP_CS, BMP_MOSI, BMP_MISO,  BMP_SCK);

void setup() {
  Serial.println(F("BMP280 test"));

  if (!bmp.begin()) {
    Serial.println(F("Could not find a valid BMP280 sensor, check wiring!"));
    while (1);

  /* Default settings from datasheet. */
  bmp.setSampling(Adafruit_BMP280::MODE_NORMAL,     /* Operating Mode. */
                  Adafruit_BMP280::SAMPLING_X2,     /* Temp. oversampling */
                  Adafruit_BMP280::SAMPLING_X16,    /* Pressure oversampling */
                  Adafruit_BMP280::FILTER_X16,      /* Filtering. */
                  Adafruit_BMP280::STANDBY_MS_500); /* Standby time. */

void loop() {
    Serial.print(F("Temperature = "));
    Serial.println(" *C");

    Serial.print(F("Pressure = "));
    Serial.println(" Pa");

    Serial.print(F("Approx altitude = "));
    Serial.print(bmp.readAltitude(1013.25)); /* Adjusted to local forecast! */
    Serial.println(" m");


If the IDE does have the library needed, you should get a compilation error.

Sounds like a connection error.

Are you using SPI or I2C ?

I've tried both I2C and SPI and none of them worked. The sensor is not soldered, I think that might be the problem

Could you post a schematic of your connections? If the soldering does not rectify the problem.

I also use the same lib but additionally, this lib too;