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Product Description
The GY-BMP280-3.3 Barometric Pressure & Temperature Sensor Module is a high-precision, ultra-compact environmental sensor designed for accurate barometric pressure, altitude estimation, and ambient temperature readings. Powered by Bosch’s advanced BMP280 digital sensor chip, this module features extremely low altitude noise, high resolution, and low power consumption, making it an exceptional upgrade over older BMP180 sensors. It supports both I2C and SPI communication protocols for seamless integration with microcontrollers like Arduino, ESP32, and Raspberry Pi.
Essential for building weather stations, drone altimeters, indoor navigation systems, and portable altimeters, this sensor delivers laboratory-grade environmental data in a tiny breakout board.
⚠️ Voltage Tip: This module operates on a strict 3.3V power supply and logic level. If you are connecting it to a 5V microcontroller like an Arduino Uno, make sure to use a logic level converter or power it through a 3.3V regulated pin to avoid permanent damage to the BMP280 chip.
Technical & Architectural Highlights
High-Precision Measurements: Measures barometric pressure with high accuracy and translates it directly into reliable altitude or weather forecasting data.
Dual Communication Interfaces: Supports both I2C (default address 0x76 or 0x77) and SPI protocols for flexible wiring configurations.
Ultra-Low Power Consumption: Engineered for low current draw, making it ideal for battery-powered data loggers and portable weather meters.
Compact Breakout Design: Pre-soldered onto a miniature PCB with mounting holes and clearly labeled header pins for effortless breadboard wiring.
Technical Specifications
| Parameter | Value / Specification |
| Product Type | Barometric Pressure & Temperature Sensor |
| Sensor IC | Bosch BMP280 |
| Operating Voltage | 3.3V DC |
| Interface | I2C (up to 3.4MHz) and SPI (up to 10MHz) |
| Pressure Range | 300hPa to 1100hPa (equivalent to +9000m to -500m above sea level) |
| Temperature Range | -40°C to +85°C |
| Board Dimensions | Approx. 15mm x 12mm |
Applications
DIY Weather Stations: Monitoring atmospheric pressure changes to forecast short-term weather trends.
Drone & UAV Altimeters: Tracking precise vertical altitude changes for flight stabilization and navigation.
Indoor Navigation & Floor Detection: Assisting robotics or wearable fitness devices in determining floor elevation changes.
What’s in the Box
1 x GY-BMP280-3.3 Sensor Module (with loose header pin set).
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