BMP280 3.3V sensor module with its loose 6-pin header, pads labelled VCC, GND, SCL, SDA, CSB and SDO

BMP280 Barometric Pressure Temperature Sensor Module 3.3V

$2.89 NZD
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BMP280 3.3V sensor module with its loose 6-pin header, pads labelled VCC, GND, SCL, SDA, CSB and SDO
  • BMP280 3.3V sensor module with its loose 6-pin header, pads labelled VCC, GND, SCL, SDA, CSB and SDO
  • Example BMP280 pressure, temperature and altitude readings on a serial monitor, an OLED and a 16x2 LCD
  • BMP280 compatibility chart: suits 3.3V boards such as ESP32 and Raspberry Pi Pico, 5V boards need a level shifter
  • BMP280 wiring diagram for I2C and SPI connections to the six pins
  • BMP280 3.3V module outline diagram showing approximate width, height and board thickness
  • What's included: one BMP280 3.3V module and one 6-pin male header strip
BMP280 Barometric Pressure Temperature Sensor Module 3.3V
SKU: BMP280-3V3

BMP280 Barometric Pressure Temperature Sensor Module 3.3V

$2.89 NZD
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A BMP280 barometric pressure and temperature sensor on a small 3.3V breakout board, marked GY-BME/PM 280. Use it for weather logging, altitude and pressure projects with an ESP32, Raspberry Pi Pico or Raspberry Pi. It connects over I2C or SPI, has no onboard regulator, and comes with a 6-pin header for you to solder on. For a 5V Arduino Uno or Nano, choose our GY-BMP280 5V or 3.3V module instead.

Specifications

SensorBMP280, chip ID 0x58
Supply3.3V only, no regulator
InterfaceI2C or SPI
I2C address0x76 (SDO to GND) or 0x77 (SDO to 3.3V)
Pressure range300 to 1100 hPa
Pressure accuracy±1 hPa typical, ±0.12 hPa relative (about ±1 m)
Temperature range-40 to +85°C
Temperature accuracy±1.0°C from 0 to 65°C
Board sizeApprox. 11.7 x 15.1 mm, 2.54mm pin pitch

Datasheets

Full technical datasheet PDF

What's in the box

1×
BMP280 3.3V sensor module

Plus one 6-pin male header strip, not soldered.

Great for

Logging air pressure and temperature in an ESP32 weather station
Measuring height change for a drone or model rocket altimeter
Watching pressure trends to see weather changes coming
Adding pressure readings to a Raspberry Pi Pico project

Wiring & getting started

  1. Solder the header

    Fit the 6-pin header to the pads and solder each pin.

  2. Connect power

    VCC to 3.3V and GND to GND. Do not connect VCC or any data pin to 5V.

  3. Connect I2C

    On an ESP32, SCL to GPIO22 and SDA to GPIO21. On a Pico, SCL to GP5 and SDA to GP4.

  4. Set the address

    Connect CSB to 3.3V and SDO to GND for address 0x76. Do not leave SDO unconnected.

  5. Run a test

    Install the Adafruit BMP280 library and start it with bmp.begin(0x76). The library looks at 0x77 unless you say otherwise.
Related guide DHT22 vs DS18B20 vs BMP280: Which Sensor Should You Choose?Choose a sensor for air temperature, humidity, remote temperature or pressure. Compare DHT22, DS18B20 and BMP280, with practical wiring and placement checks.

Frequently Asked Questions

Answers to the questions buyers ask most.

Is this a BMP280 or a BME280?
It is a BMP280, so it measures pressure and temperature but not humidity. The board is printed GY-BME/PM 280 because the same board is used for both sensors. Reading register 0xD0 returns 0x58 on a BMP280.
Can I use it with an Arduino Uno or Nano?
Not directly. This board has no regulator or level shifter, and the sensor's pins are not 5V tolerant. Use our GY-BMP280 5V or 3.3V module, or add a level shifter between the Arduino and this board.
Which I2C address does it use?
0x76 when SDO is connected to GND, or 0x77 when SDO is connected to 3.3V. Do not leave SDO unconnected, because the address is then undefined. The Adafruit library uses 0x77 unless you pass 0x76.
How accurate is the altitude reading?
Changes in height can be measured to about 1 m, because relative pressure accuracy is ±0.12 hPa. Absolute altitude also needs today's local sea-level pressure, which changes with the weather.
Why does it read a little warmer than the room?
The temperature channel measures the sensor chip itself, so it includes a small amount of self-heating and any warmth from nearby parts. Use forced mode and mount it away from regulators for the closest reading.
Does it work with SPI?
Yes. Use SCL as clock, SDA as data in, SDO as data out and CSB as chip select. Once CSB has been pulled low the sensor stays in SPI mode until the power is cycled.

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