HotSystems:
Dann solltest du mal deinen Sketch zeigen, 30 sek. sind unüblich lang und wohl nicht nur vom Sensor abhängig.
Den Sketch in Code-Tags setzen, damit dieser von allen gut lesbar ist.
Edit:
Oder schaltest du gar die Spannung des Sensors ab ?
der Standard Test von Adafruit:
/***************************************************************************
This is a library for the BMP280 humidity, temperature & pressure sensor
Designed specifically to work with the Adafruit BMP280 Breakout
----> Adafruit BMP280 I2C or SPI Barometric Pressure & Altitude Sensor [STEMMA QT] : ID 2651 : $9.95 : Adafruit Industries, Unique & fun DIY electronics and kits
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.begin(9600);
Serial.println(F("BMP280 test"));
if (!bmp.begin(0x76)) {
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.print(bmp.readTemperature());
Serial.println(" *C");
Serial.print(F("Pressure = "));
Serial.print(bmp.readPressure()/100);
Serial.println(" Pa");
Serial.print(F("Approx altitude = "));
Serial.print(bmp.readAltitude(1017.25)); /* Adjusted to local forecast! */
Serial.println(" m");
Serial.println();
delay(1000);
}