Add Reliable Barometric Pressure Sensor BMP085 Breakout Sensing to Your Next Build

This is a simple breakout board for the BMP085 high-precision, low-power barometric pressure sensor from DFRobot. The BMP085 offers a measuring range of 300 to 1100 hPa with an absolute accuracy of down to 0.03 hPa. It's based on piezo-resistive technology for EMC robustness, high accuracy and linearity as well as long term stability. This sensor supports a voltage supply between 1.8 and 3.6VDC. It is designed to be connected directly to a micro-controller via the I2C bus

This breadboard-friendly board breaks out all pins of the BMP085 to a 6-pin 0.1" pitch header. The analog and digital supplies (VDDD and VDDA) of the BMP085 are tied together and broken out to a single pin. We've also put two 4.7k pull-up resistors on the I2C lines.

Why you'll love it

• Digital two wire (I2C) interface
• Wide barometric pressure range
• Flexible supply voltage range
• Ultra-low power consumption
• Low noise measurement
• Fully calibrated

What you can build

This part fits monitoring, measurement, logging, alarms, and automation builds. It works well in Arduino, ESP32, and Raspberry Pi style projects where you need reliable real-world data from the barometric pressure sensor bmp085 breakout.

Starter bundles

Pair it with an Arduino-compatible board, ESP32, or Raspberry Pi, plus sensor cables, headers, or a matching expansion shield for faster setup.

Recommended add-ons

Useful add-ons include displays, data logging modules, waterproof enclosures, and matching Gravity cables or sensor shields.

Technical specifications

Pinout & usage notes

Use the correct SDA and SCL pins on your controller and make sure the bus voltage is compatible. For analog readings, use a stable reference and keep wiring short when possible for cleaner signals.

DFRobot resources

Official product page: View on DFRobot
Wiki / documentation: Open DFRobot wiki
BMP085 Datasheet · Library · Example Arduino Sketch

What’s in the box

1 × Barometric Pressure Sensor BMP085 Breakout

Frequently Asked Questions