SparkFun Environmental Sensor – BME688 (Qwiic)

The SparkFun BME688 Environmental Sensor is a breakout that combines a gas scanning sensor with temperature, humidity, and barometric pressure sensing for a complete environmental sensor in a single package.

The gas sensor on the BME688 can detect a wide variety of volatile organic compounds (VOCs), volatile sulfur compounds (VSCs), and other gases such as carbon monoxide and hydrogen in the part per billion (ppb) range. Combine that with precise temperature, humidity, and barometric pressure and the BME688 can work as a completely standalone environmental sensor all in a 1in. x 1in. breakout!

The sensor communicates via either I²C or SPI. We’ve broken out the I²C pins to our Qwiic system so no soldering is required to connect it to the rest of your system but if you would prefer, both the I²C and SPI pins are also broken out to standard 0.1in.-spaced pins.

Note: While this sensor can be used with the BME AI-Studio and BSEC2 Arduino library; it is recommended for the AI functionality, users purchase the BME688 Evaluation Board (Coming Soon) for ease of use.

Important: In order to avoid contamination of its gas scanning capabilities, DO NOT touch the metallic casing of the BME688 sensor. Please, handle with care.

Get Started with the Sparkfun BME68X Enviromental Sensor Guide

Features

• Uses I²C interface (Qwiic-enabled)
  • I²C Addresses: 0x76 (Default) or 0x77
  • 2x Qwiic Connectors
• Operating voltage range
  • 1.71V – 3.6V
  • Typically 3.3V if using the Qwiic cable
• Relative humidity
  • Operating range: 0% to 100%
  • Absolute Accuracy: ±3%RH
  • Resolution: ±0.008%RH
• Temperature
  • Operating range: -40°C to +85 °C
  • Absolute Accuracy: ±1.0°C
  • Resolution: 0.01°C
• Pressure
  • Operating range: 300hPa – 1100hPa
  • Absolute accuracy: ±60Pa (0°C to 65°C)
  • Resolution: 0.18PA, highest oversampling
• Gas
  • F1 score for H₂S scanning: 0.92
  • Standard scan speed: 10.8 sec/scan
  • Sensor-to-sensor deviation: ± 15% ± 15
• Typical current consumption (varies based on mode and active sensor)
  • 2.1 µA to 18mA
  • 0.15 µA (sleep mode)
  • 3.9 mA in standard gas scan mode

Resources

• Schematic
• Eagle Files
• Hookup Guide
• Datasheet (BME688)
• BME AI-Studio Manual
• BME680 Arduino Library
• Bosch Software Page:
  • BME AI-Studio (Mac/Windows) (Download from software page)
  • BME68x Arduino Library
  • BME68x API
  • BSEC2 Arduino Library
  • BSEC2 API (Download from software page)
    • BSEC2 Integration Guide
• Qwiic Connect System
• GitHub Hardware Repo
• Board Dimensions