GY-BME280-3.3 / GY-BMP280-3.3 High Precision Atmospheric Pressure Sensor Module Altimeter

Description

The GY-BME280-3.3 is a breakout board featuring a Bosch Sensortec BME280 Temperature, Humidity & Pressure Sensor.

The board features a selectable I2C address jumper (solder link GS2), I2C pull-up resistors, a 7-pin 2.54mm header, and two 3.5mm mounting holes.

Default Settings of the Board:

• Single power rail configuration: Vdd = Vdd_IO (solder link GS1 connected)
• Pull-up resistors (R2, R3): 10kΩ
• Protocol selector resistor (R1): 0Ω
• Decoupling capacitors: 0.1µF on both power supply pins (Vdd & Vdd_IO)

Note: If you connect the board to both power rails (VDD_IO at 1.8V and VDD at 3.3V), be sure to remove the power rail jumper (GS1)!

BME280 Features

• Package: 2.5 mm x 2.5 mm x 0.93 mm metal lid LGA
• Digital Interface: I²C (up to 3.4 MHz) and SPI (3 and 4-wire, up to 10 MHz)
• Supply Voltage:VDD main supply voltage range: 1.71 V to 3.6 VVDDIO interface voltage range: 1.2 V to 3.6 V
• Current Consumption:1.8 µA @ 1 Hz (humidity and temperature)2.8 µA @ 1 Hz (pressure and temperature)3.6 µA @ 1 Hz (humidity, pressure, and temperature)0.1 µA in sleep mode
• Operating Range: -40…+85°C, 0…100% relative humidity, 300…1100 hPa
• Independent Control: Humidity sensor and pressure sensor can be independently enabled/disabled.

Bosch has advanced their technology with the new BMP280 sensor, an environmental sensor featuring temperature and barometric pressure, serving as the next-generation upgrade to the BMP085/BMP180/BMP183. This sensor is excellent for all sorts of weather sensing applications and can be used with both I²C and SPI interfaces.

This precision sensor from Bosch is the best low-cost, precision sensing solution for measuring barometric pressure with ±1 hPa absolute accuracy, and temperature with ±1.0°C accuracy. Because pressure changes with altitude and the pressure measurements are highly accurate, you can also use it as an altimeter with ±1 meter accuracy.

The BME280 is the next-generation sensor from Bosch and represents an upgrade to the BMP085/BMP180/BMP183, featuring a low altitude noise of 0.25m and the same fast conversion time. It maintains the same specifications but offers the flexibility of using either I²C or SPI. For simple, easy wiring, choose I²C. If you want to connect multiple sensors without worrying about I²C address collisions, choose SPI.