BME688 Environmental Sensor Module – Temp, Humidity, Gas, Pressure

BME688 Environmental Sensor Module – 4-in-1 Air Quality Monitoring

The BME688 Environmental Sensor Module is a compact, high-precision sensing solution that simultaneously measures temperature, humidity, barometric pressure, and gas/air quality — all in a single easy-to-integrate board. Whether you're building a smart home hub, an IoT weather station, an indoor air quality monitor, or a custom electronics project, the BME688 gives you reliable, multi-parameter environmental data with minimal wiring.

Featuring an industry-standard I²C/SPI interface, this module is compatible with popular development platforms including Arduino, Raspberry Pi, ESP32, and more. The onboard AI-powered gas sensor can detect a wide range of volatile organic compounds (VOCs), making it a powerful tool for intelligent environment sensing applications.

Key Features

• 4-in-1 Sensing: Measures temperature, relative humidity, barometric pressure, and gas resistance in one module
• AI-Ready Gas Sensing: Onboard BME688 chip supports Bosch AI software (BSEC) for advanced air quality index (IAQ) estimation
• Dual Interface Support: I²C and SPI communication protocols for flexible integration
• Wide Compatibility: Works with Arduino, Raspberry Pi, ESP8266, ESP32, STM32, and other microcontroller platforms
• Compact & Breadboard-Friendly: Small form factor with standard pin headers for easy prototyping
• Low Power Consumption: Optimized for battery-powered and energy-efficient designs
• High Accuracy: Precise readings across a broad operating range for temperature, humidity, and pressure

Specifications

• Sensor IC: Bosch BME688
• Parameters Measured: Temperature, Humidity, Pressure, Gas (VOC/IAQ)
• Communication: I²C (up to 3.4 MHz) / SPI (up to 10 MHz)
• Supply Voltage: 1.71 V – 3.6 V
• Temperature Range: -40°C to +85°C
• Humidity Range: 0–100% RH
• Pressure Range: 300–1100 hPa
• Interface Pins: VCC, GND, SCL/SCK, SDA/SDI, SDO, CS

Ideal Applications

• Indoor & outdoor air quality monitoring systems
• Smart home automation and IoT devices
• Weather stations and environmental loggers
• HVAC control and ventilation monitoring
• Wearable environment sensing
• Maker and prototyping projects

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Frequently Asked Questions

Q: What does the BME688 Environmental Sensor Module measure?

A: The BME688 module simultaneously measures four environmental parameters: temperature, relative humidity, barometric pressure, and gas resistance (used for air quality / VOC detection). This makes it one of the most versatile single-chip environmental sensors available for DIY and professional electronics projects.

Q: Is the BME688 sensor module compatible with Arduino and Raspberry Pi?

A: Yes! The BME688 Environmental Sensor Module supports both I²C and SPI communication protocols, making it fully compatible with Arduino, Raspberry Pi, ESP32, ESP8266, STM32, and virtually any microcontroller or single-board computer that supports these interfaces. Library support is available from Bosch and the open-source community.

Q: What is the AI gas sensing feature of the BME688?

A: The BME688 chip integrates a high-linearity, high-sensitivity gas sensor that can detect a broad spectrum of volatile organic compounds (VOCs) and other gases. When paired with Bosch's BSEC (Bosch Sensortec Environmental Cluster) AI software library, the module can compute an Indoor Air Quality (IAQ) index, giving your project intelligent, interpreted air quality data rather than raw resistance readings.

Q: What voltage does the BME688 sensor module operate at?

A: The BME688 module operates at a supply voltage of 1.71 V to 3.6 V, making it suitable for both 3.3 V and lower-voltage systems. It is low-power and well-suited for battery-operated or energy-constrained IoT designs. Note: It is NOT 5V tolerant on its own — use a level shifter if connecting to a 5V system.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.