The SparkFun BME280 Atmospheric Sensor Breakout measures barometric pressure, relative humidity, and temperature in a compact package. This version comes with headers pre-soldered for easy breadboard use or direct wiring.

The breakout supports both I²C (5 V tolerant with on-board pull-up resistors to 3.3 V) and SPI (3.3 V) interfaces. It draws less than 1 mA during measurements and idles below 5 µA, making it well suited for battery-powered weather stations and environmental monitoring.

Key Features

• Three-in-One Sensor – Pressure, humidity, and temperature on a single breakout
• I²C and SPI Interfaces – I²C is 5 V tolerant; SPI operates at 3.3 V
• Pre-Soldered Headers – Ready for breadboard or direct connection
• Ultra-Low Power – Less than 1 mA active, below 5 µA idle

Specifications

• Operating Voltage – 3.3 V
• Pressure Range – 30–110 kPa (relative accuracy ±12 Pa, absolute accuracy ±100 Pa)
• Humidity Range – 0–100% RH (±3% accuracy from 20–80% RH)
• Temperature Range – −40 °C to +85 °C
• Altitude Range – 0–9.2 km (relative accuracy ~1 m at sea level)

Ideal For

• Weather stations and environmental monitoring
• Indoor/outdoor navigation and altitude estimation
• Home automation and HVAC systems
• Personal health and wellness monitoring

Package Contents

• 1× SparkFun BME280 Atmospheric Sensor Breakout (with headers)

Resources

• Hookup Guide
• Schematic (PDF)
• Eagle Files
• BME280 Datasheet (PDF)
• Hardware Design (GitHub)
• Arduino Library (GitHub)