Gravity: I2C BME280 Environmental Sensor

Introduction
BME280 is an environmental sensor that integrates onboard temperature sensor, humidity sensor and barometer. The sensor is of high precision, multiple functions, and small size etc. It provides both SPI and I2C interfaces, which make it easy to make a fast prototypes. It can be widely used in environmental monitoring, story height measurement and Internet of Things (IoT) control and so on.

Gravity I2C BME280 Environmental Sensor has based on BoSCH newest MEMS sensor (Micro-Electro-Mechanical System). It is very stable to compare with other kind of sensors, especially the air pressure measurement, the offset temperature coefficient is ±1.5 Pa/K, equiv. to ±12.6 cm at 1 °C temperature change. Therefore, the stable and multi-function make BME280 become a good choice in many scenes.

Applications

Context awareness, e.g. skin detection, room change detection

Home automation control (control heating, venting, air conditioning (HVAC))

Internet of things

GPS enhancement (e.g. time-to-first-fix improvement, dead reckoning, slope detection)

Indoor navigation (change of floor detection, elevator detection)

Outdoor navigation, leisure and sports applications

Weather forecast

Vertical velocity indication (rise/sink speed)

Features

Compatible with 3.3V/5V microcontrollers

Environmental monitoring: temperature, humidity and barometer

Gravity I2C interface and reserve XH2.54 SPI interface

Small size, convenient to install

Specification

Working Voltage：3.3V~5.0V

Working Current：2mA

Working Temperature：-40℃~+85℃

Temperature Measuring Range: -40℃~+85℃, resolution of 0.1℃, deviation of ±0.5℃

Humidity Measuring Range: 0~100%RH, resolution of 0.1%RH, deviation of ±2%RH

Pressure Measuring Range: 300~1100hPa

Humidity Sampling Time: 1s

Dimension: 22 * 25 mm/ 0.87 * 0.98 inches

Weight: 12g

Shipping List

Gravity: I2C BME280 Environmental Sensor (Temperature, Humidity, Barometer) x1

XH2.54-6pin Header x1

Gravity-4P I2C/ UART Sensor Wire x1

Documents

Product Wiki 

Projects Project 1. ESP32 Solar Weather Station
The system will be placed on my balcony and will retrieve temperature, humidity and air pressure. For this project you will need:

• 1x - DFRobot FireBeetle ESP32 IOT board

• 1x - DFRobot Gravity - I2C BME280

• 1x - DFRobot 3.7V Polymer Lithium Ion

• 1x - DFRobot Solar Lipo Charger

• 2x - 6V 1W Solar Panel

• 1x - Perfboard

• 1x - Female Header

• 1x - Enclosure/box

• Wires

• Screws

Project 2. How to Make a Smart Colorful Light


Today we will teach you How to Make a Smart Colorful Light
 Based On FireBeetle ESP32 IOT Microcontroller.

Hardware in need:

• RGB LED Breakout (5050)   
• NPN Triode×1
        
• FireBeetle ESP32 IOT Microcontroller (Supports Wi-Fi & Bluetooth) ×1
   
• FireBeetle Covers-Proto Board×1
        
• Rotary Encoder EC11J×1
• BME280×1


Project 3. FireBeetle Board-ESP32 Tutorials: Reforming a Small electric Fan

The instrument not just can record steps (and calories) at real time, but show time. What is special is that the format of showing is pointer.

Hardware in need:

• FireBeetle ESP32 IOT Microcontroller (Supports Wi-Fi & Bluetooth) × 1
• FireBeetle Covers-Gravity I/O Expansion Shield× 1
• Gravity: I2C OLED-2864 Display × 1
• BME temperature-humidity sensor × 1
• EC11J rotary encoder × 1
• 9g micro servo (1.6kg) × 1
• Dupont line × 10
• Crust By Overlord 3D printer × 1