Adafruit
Adafruit BME280 I2C or SPI Temperature Humidity Pressure Sensor
The Adafruit BME280 Breakout is a precision environmental sensor from Bosch that measures temperature, barometric pressure, and humidity in a single package....
The Adafruit BME280 Breakout is a precision environmental sensor from Bosch that measures temperature, barometric pressure, and humidity in a single package. With its excellent pressure accuracy, it also functions as an altimeter with approximately ±1 metre resolution.
The breakout includes a 3.3V regulator and level shifting, so it works with both 3V and 5V microcontrollers. It supports both I2C and SPI interfaces — use I2C for simple two-wire connections, or SPI to avoid address collisions when connecting multiple sensors.
Key Features
- Temperature – ±1.0°C accuracy
- Humidity – ±3% RH accuracy
- Barometric Pressure – ±1 hPa absolute accuracy, 0.25 m altitude noise
- Altimeter Function – Approximately ±1 metre accuracy using pressure readings
- I2C and SPI Interfaces – Choose the connection method that suits your project
- 3.3V Regulator and Level Shifting – Works with 3V or 5V logic
- Fast Conversion – Quick readings for responsive environmental monitoring
Specifications
- Temperature Range – -40°C to +85°C
- Humidity Range – 0–100% RH
- Pressure Range – 300–1100 hPa
- Interface – I2C (default) or SPI
- Supply Voltage – 3–5V (onboard regulator)
Ideal For
- Weather stations and environmental monitoring
- Altitude and barometric pressure logging
- Indoor climate control and HVAC projects
- IoT sensor nodes
Package Contents
- 1× Adafruit BME280 Breakout (assembled)
- 1× Header strip
Jargon buster
Plain-language definitions for the technical terms used above.
- 3.3V regulator
- A 3.3V regulator is a power circuit that provides a steady 3.3 volts for parts that need that supply voltage. On a breakout board, it can let the sensor run safely even when the connected microcontroller or power source uses a higher voltage.
- breakout
- A breakout is a small circuit board that makes a tiny or hard-to-solder component easier to connect to with standard pins. It matters because this OLED module can be wired into a microcontroller project without needing to solder directly to the display’s fine contacts.
- I2C
- I2C is a two-wire communication bus used by many sensors and small modules. It matters because several I2C devices can share the same two wires, but each device needs a compatible address and your controller must support I2C.
- IoT
- Short for Internet of Things, meaning physical devices that connect to networks or the internet to send data or be controlled remotely. It matters if you want projects such as connected sensors, remote controls or classroom data-logging activities.
- SPI
- A fast serial communication bus often used for displays, memory cards, and sensors. It matters because SPI devices need specific pins for clock and data, plus a separate chip-select line for each device.
Find this product in
Brands
Related Tutorials
Free guides on learn.littlebird.com.au
