BMP280 Barometric Pressure and Temperature Sensor Module

Bosch precision barometric pressure and temperature sensor over I2C/SPI, used for altitude and weather sensing.

₹95 + 18% GST

SKU: BOTBIT-SEN-04 · Best for: Altitude sensing for drones, quadcopters and model rockets

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Overview

About BMP280 Barometric Pressure and Temperature Sensor Module.

The BMP280 is a Bosch precision barometric pressure and temperature sensor that communicates over I2C or SPI. It is a compact, low-power successor to the classic BMP180 and is extremely popular for altitude sensing, weather monitoring and drone flight controllers because of its high pressure resolution and small size.

Unlike the BME280, the BMP280 does not measure humidity; it focuses on very accurate pressure and temperature. Its fine pressure resolution allows altitude changes of well under a metre to be detected, which is why it appears in many hobby altimeters and quadcopter builds.

For Indian makers, the BMP280 is the affordable choice when you need barometric pressure and altitude but not humidity. It is well supported by Adafruit and Bosch libraries and works with Arduino, ESP32/ESP8266 and Raspberry Pi.

Key features

Why it stands out.

High-precision barometric pressure and temperature measurement

Fine pressure resolution enabling sub-metre altitude detection

I2C and SPI interfaces for flexible wiring

Very low power draw, ideal for battery and drone applications

Small Bosch LGA package on a compact breakout board

Supported by Adafruit BMP280 and Bosch libraries across Arduino, ESP and Pi

Specifications

Selection facts.

Measurements	Barometric Pressure and Temperature
Manufacturer	Bosch Sensortec BMP280
Pressure Range	300 to 1100 hPa
Pressure Accuracy	+/-1 hPa (absolute), +/-0.12 hPa relative
Temperature Range	-40 to 85 degC (+/-1 degC accuracy)
Interface	I2C (up to 3.4 MHz) and SPI (up to 10 MHz)
I2C Address	0x76 or 0x77 (selectable)
Supply Voltage	3.3V (modules often accept 3.3V-5V via onboard regulator)
Current	~2.7 uA at 1 Hz in typical use
Package	2.0 x 2.5 x 0.95 mm LGA on breakout board

Applications

Where it is used.

Altitude sensing for drones, quadcopters and model rockets
Weather stations and barometric-pressure trend logging
Indoor navigation and floor-level detection
Hobby altimeters and variometers
IoT environmental nodes needing pressure and temperature
GPS-assist and dead-reckoning height reference on flight controllers

Buying guide

How to choose.

Choose the BMP280 when you need accurate barometric pressure and altitude but do not need humidity, for example drone flight controllers, altimeters and weather-pressure logging. If you also need humidity, step up to the BME280 (they share the same footprint and libraries family).

Check the I2C address (0x76 or 0x77) to avoid conflicts on a shared bus with other sensors. The Bosch chip is 3.3V; most breakout boards add a regulator and level shifting so they run on 3.3V or 5V, but verify your specific module before connecting to a 5V Arduino.

Pair it with an ESP32/ESP8266 for wireless weather nodes, or with a flight controller/Arduino for altitude. Use the Adafruit BMP280 library to get pressure, temperature and calculated altitude in a few lines of code.

FAQ

Common questions.

Does the BMP280 measure humidity?

No. The BMP280 measures only pressure and temperature. If you need humidity as well, choose the BME280, which is nearly identical but adds a humidity element.

How does it measure altitude?

It reads barometric pressure and, given a reference sea-level pressure, libraries compute an estimated altitude. Its fine resolution can detect altitude changes below one metre, which is why drones use it.

I2C or SPI, and how do I wire it?

Both are supported. For I2C connect VCC, GND, SDA and SCL and select address 0x76 or 0x77. For SPI use the SCK, SDI, SDO and CS lines. I2C is the most common for hobby projects.

Which library should I use?

The Adafruit BMP280 library for Arduino is the most popular; Bosch also provides an official driver. Both give pressure, temperature and calculated altitude.

Is it available in India and how do I tell it from a BME280?

Yes, it is widely stocked in India and cheaper than the BME280. Physically the boards look similar; the BMP280 chip is smaller and the board will not report humidity. Buy from a trusted seller to be sure of what you receive.