BME690 Digital Sensor Module – Temperature, Humidity, Pressure, Gas | I2C/SPI

The 7Semi BME690 Sensor Module integrates Bosch Sensortec’s latest environmental sensing technology with 7Semi’s rugged, plug-and-play breakout design. It combines digital sensing of temperature, relative humidity, barometric pressure, and gas (VOC/VSC detection) into a compact, low-power device.

With both I²C and SPI interfaces, wide voltage compatibility 3.3v - 5v,  this module is ideal for high-accuracy, low-power embedded applications.

• 4-in-1 Environmental Sensing: Temperature, humidity, pressure, and gas (VOC, CO, H₂S, and more)

• Low Power Modes: Down to 0.05 mA in ultra-low power gas sensing mode

• Flexible Interface: I²C (up to 3.4 MHz) & SPI (3/4 wire, up to 10 MHz)

• Extended Operating Range: -40 to +85 °C, 0–100% rH, 300–1100 hPa

• Output Metrics: IAQ Index, bVOC & CO₂ equivalents, gas resistance, ambient readings

Applications

• Indoor Air Quality Monitoring

• Smart Home Automation

• Wearables (e.g., breath checkers, smartwatches)

• Diaper & Spoiled Food Detection (via VSC)

• Industrial or Asset Tracking (environmental sensing)

• Fire and Gas Leak Detection

What’s Included

• 1x 7Semi BME690 Digital Sensor Module

Frequently Asked Questions (FAQ)

Q1:What microcontrollers are compatible with this sensor board?
A: The sensor works with any 3.3V logic microcontroller that supports I²C, including ESP32, ESP8266, Raspberry Pi, STM32, Arduino Nano 33 IoT, and nRF52-based boards.

Q2: Can I use this with Raspberry Pi or ESP32?
A: Yes! Connect 3V3, GND, SDA, and SCL lines directly. Libraries from Bosch or Adafruit are fully compatible.

Q3: Does it require calibration?
A: The sensor performs self-calibration and adapts to changing environments using BSEC software.

Q4: What type of gas detection is supported?
A: VOCs, bVOC (breath VOC), H₂S, eCO₂, and more via customizable profiles.

Resources

• BME690 Datasheet