SKU: SENS-0484
📋 GST Invoice Available

Bosch BME688 4-in-1 Environmental Sensor Module with Cotton Core & Holder - I2C/SPI

₹1,359.00 (Inclusive of all taxes)
Out of Stock

The Bosch BME688 is a 4-in-1 digital MEMS environmental sensor module measuring VOC gas, temperature, humidity, and barometric pressure. Featuring a built-in micro-hotplate for stable gas sensing, it offers I2C and SPI digital interfaces for seamless integration with Arduino, Raspberry Pi, ESP32, and other 3.3V microcontroller platforms.

Features

  • 4-in-1 sensing: VOC (Gas), Temperature, Humidity, Barometric Pressure.
  • Integrated micro-hotplate for precise, stable VOC and IAQ measurements.
  • Full hardware and software compatibility with the BME680 for easy upgrades.
  • AI-ready gas classification via Bosch AI-Studio and BSEC2 software library.
  • Ultra-low power consumption and compact LGA package for portable/IoT designs.

Out of stock

Description

The Bosch BME688 is a next-generation environmental sensor that builds upon the proven BME680 platform. It integrates a MEMS-based micro-hotplate for volatile organic compound (VOC) and indoor air quality (IAQ) sensing, which actively heats a sensitive metal oxide layer to ensure measurement stability across varying ambient temperatures and humidity levels. This advanced feature, combined with high-precision capacitive humidity, piezoresistive pressure, and optimized temperature sensing, provides a comprehensive environmental data set.

Designed for smart IoT and portable applications, the module operates from a 3.3V supply and communicates via standard I2C or SPI digital interfaces. Its compatibility with the BME680’s pinout and the Bosch BSEC2 software allows for straightforward firmware migration and access to AI-driven gas-scene classification algorithms, enabling the detection of specific gas patterns for more intelligent environmental monitoring systems.

Key Features

  • Quad-parameter environmental sensing on a single digital MEMS chip.
  • Built-in micro-machined hotplate ensures consistent VOC sensor response.
  • Supports AI-powered gas classification and scene detection via Bosch software tools.
  • Wide operating range from -40°C to +85°C and 0% to 100% relative humidity.
  • Hardware and firmware drop-in replacement for existing BME680 designs.
  • Low-power operation ideal for battery-powered IoT and wearable devices.
  • Robust LGA package with a protective black plastic shell and integrated filter core.
  • Digital output eliminates analog signal conditioning requirements.

Applications

  • Indoor Air Quality (IAQ) monitoring and smart HVAC control systems.
  • Portable environmental data loggers and personal wellness wearables.
  • Smart home automation for climate and ventilation management.
  • IoT sensor nodes for agricultural and industrial environmental monitoring.
  • Research and development platforms for gas sensing and AI classification.

Technical Specifications

Manufacturer Part NumberBME688
Sensor Type4-in-1 Environmental (Gas/VOC, Temperature, Humidity, Pressure)
Supply Voltage3.0V to 3.6V DC
Output InterfaceI2C, SPI
Pressure Range300 hPa to 1100 hPa
Humidity Range0% to 100% RH
Operating Temperature-40°C to +85°C
Temperature Accuracy±1.0°C (@ 25°C)
Humidity Accuracy±3% RH
Housing MaterialPlastic Shell with Integrated Cotton Filter Core
Cable Length1 Meter
Module Length50 mm
Module Diameter14 mm
Weight14 g

Frequently Asked Questions

What is the main advantage of the BME688 over the BME680?

The BME688 incorporates a built-in micro-hotplate specifically for the gas sensor element. This provides more stable and reliable VOC and IAQ measurements across varying ambient temperatures and humidity levels, a key improvement over the BME680. It also offers enhanced support for AI-driven gas-scene classification via Bosch's AI-Studio software.

What is the operating voltage and how do I interface with it?

The BME688 requires a 3.3V DC power supply (3.0V to 3.6V range). It features both I2C and SPI digital communication interfaces, allowing for easy connection to microcontrollers like Arduino, ESP32, Raspberry Pi, and STM32. The pinout is fully compatible with the BME680, facilitating straightforward hardware upgrades.

What does the 'cotton core' in the housing do?

The integrated cotton core acts as a simple particulate filter and diffusion barrier for the gas sensor inlet. It helps protect the sensitive MEMS element from dust and larger particles, which can extend sensor life and improve long-term measurement stability in real-world environments, while still allowing target gases to diffuse through.

Can I use existing BME680 libraries and code with the BME688?

Yes, the BME688 is designed as a hardware and software drop-in replacement for the BME680. You can use the same wiring, PCB footprint, and initial driver code. To unlock the advanced AI gas classification features, you will need to utilize Bosch's updated BSEC2 software library and AI-Studio tools.

Package Includes

  • 1 x BME688 Sensor Module (Black Shell with Built-in Cotton Core)
  • 1 x Card Holder / Mounting Bracket

Additional Information

Weight 0.014 kg
Dimensions 5 × 1.4 cm