BMP280 Barometric Pressure

Pressure Range

300 to 1100 hPa

Operating Temperature Range

-40 to +85 °C

Operating Voltage Vdd

1.71 to 3.6 V

Operating Voltage Vddio

1.2 to 3.6 V

Interface

I2C, SPI

Current Consumption Sleep

0.1 to 0.3 µA

Current Consumption Forced Mode 1hz

2.7 µA

Relative Accuracy Pressure

±0.12 hPa

Absolute Accuracy Pressure

±1 hPa

Resolution Pressure Ultra High

0.0016 hPa

Resolution Temperature

0.01 °C

Package

8-pin LGA

I2c Address

0x76 or 0x77

I2c Speed

up to 3.4 MHz

Spi Speed

up to 10 MHz

Start Up Time

2 ms

VDD is 1.71-3.6 V and VDDIO 1.2-3.6 V (per the datasheet specs) — a 3.3 V pressure/temperature sensor on I2C or SPI (no humidity, unlike the BME280).

• Barometric pressure and altitude sensing
• Weather stations
• Drone/flight altitude reference

• Not 5 V-tolerant — level-shift with 5 V MCUs.
• I2C address is 0x76 or 0x77 via the SDO pin.
• Add SDA/SCL pull-ups if your module lacks them.

• ESP32 DevKitC (WROOM-32)Espressif · ESP32-WROOM-32
• Raspberry Pi PicoRaspberry Pi · RP2040
• BME280 Humidity/Pressure/TempBME280 · Bosch

Community starter examples — minimal, unofficial, and provided to get you wiring fast. Verify against the manufacturer datasheet before relying on them.

// BMP280 pressure + temperature (I2C) — community starter example
#include <Wire.h>
#include <Adafruit_BMP280.h>

Adafruit_BMP280 bmp;  // I2C

void setup() {
  Serial.begin(115200);
  Wire.begin();
  if (!bmp.begin(0x76)) {        // many modules are 0x76; Adafruit is 0x77
    Serial.println("BMP280 not found");
    while (1) delay(10);
  }
}

void loop() {
  Serial.print("T="); Serial.print(bmp.readTemperature()); Serial.print(" C  ");
  Serial.print("P="); Serial.print(bmp.readPressure() / 100.0F); Serial.println(" hPa");
  delay(1000);
}

# BMP280 (ESP32) — community starter example
# lib: bmp280.py (e.g. dafvid/micropython-bmp280)
from machine import Pin, I2C
from bmp280 import BMP280
import time

i2c = I2C(0, scl=Pin(22), sda=Pin(21))
bmp = BMP280(i2c)

while True:
    print(bmp.temperature, "C", bmp.pressure, "Pa")
    time.sleep(1)