BME280 Environmental Sensor, Temperature, Humidity, Barometric Pressure (WS-15231)

Overview

A tiny sensor breakout with BME280 onboard, sensing environmental temperature, humidity, and barometric pressure. It supports both I2C and SPI interfaces, also is compatible with 3.3V/5V voltage levels.

Due to its ultra small form factor, low power consumption, high precision with stability, the BME280 Environmental Sensor is suited for applications such as environment monitoring, weather forecast, altimeter, and IoT projects, and so on.

Features

• Supports I2C (default), configurable slave address
• Supports SPI, switch to SPI via I/O setting
• Onboard voltage level translator, compatible with 3.3V/5V operating voltage
• Comes with development resources and manual (examples for Raspberry Pi/Arduino/STM32)

Specifications

• Operating voltage: 3.3V/5V
• Communication interface: I2C/SPI
• Temperature sensing: -40~85°C (resolution 0.01°C, accuracy ±1°C)
• Humidity sensing: 0~100%RH (resolution 0.008%RH, accuracy ±3%RH, response time 1s, delay ≤2%RH)
• Barometric pressure sensing: 300~1100 hPa (resolution 0.18Pa, accuracy ±1hPa)
• Power consumption: <0.1mA@1Hz (H,P,T)
• Dimension: 27mm x 20mm
• Mounting hole size: 2.0mm

Pinouts

PIN	I2C	SPI
VCC	3.3V/5V power supply
GND	Ground
SDA/MOSI	I2C data	SPI data master output/slave input
SCL/SCK	I2C clock	SPI clock input
ADDR/MISO	I2C address chip selection,  high level (default) address: 0x77; low level address: 0x76	SPI data master input/slave output
CS	NC	SPI chip selection, low active

Dimensions

Development Resources

Wiki : www.waveshare.com/wiki/BME280_Environmental_Sensor