BME690 IAQ Air Quality Sensor Nano Breakout 1.27mm Pitch Header: Compact 4-in-1 Environmental Sensing
The 7Semi BME690 IAQ Sensor Nano Breakout integrates Bosch Sensortec’s advanced air quality technology into a compact and reliable module. It combines digital measurement of temperature, humidity, barometric pressure, and gases such as VOCs and VSCs, making it highly suitable for indoor air quality monitoring and embedded IoT systems.
Developed on Bosch’s proven BME688 platform, the BME690 offers increased robustness for demanding environments with condensation exposure. Its low-power design, I²C interface, and built-in BSEC software support make it ideal for developers creating air quality monitors, smart appliances, wearable devices, and portable embedded applications.
Key Features
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4-in-1 Environmental Sensing: Measures temperature, humidity, barometric pressure, and gas levels (VOCs, CO2 equivalents, H2S, and more)
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Low Power Operation: Supports ultra-low power gas sensing modes for battery-driven applications
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Wide Operating Range: Reliable across -40 C to +85 C, 0–100% rH, 300–1100 hPa
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Flexible Connectivity: I2C interface with Qwiic compatibility for easy integration
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Advanced Data Outputs: Provides IAQ index, bVOC and CO₂ equivalents, gas resistance, and environmental readings
What’s Included
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1x BME690 IAQ Air Quality Sensor Nano Breakout 1.27mm Pitch Header
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
- Supply Voltage:
- 3.3V
- Interfaces:
- I2C
- Temperature Accuracy:
- +-0.5 °C (0–65 °C)
- Humidity Accuracy:
- +-3% RH (20–80%)
- Pressure Accuracy:
- +-0.5 hPa (300–1100 hPa)
- Gas Resistance Output:
- Yes (with IAQ, bVOC, CO₂-equivalents)
- Sleep Current:
- 0.11 µA
- Ultra-Low Power Gas Sensing:
- 0.05 mA avg current
- Operating Temperature:
- -40 C to +85 C
- Connector type:
- 1.27 mm pitch header
- Microcontrollers compatible:
- Ardiuno, ESP32, ESP8266, STM32, Raspberry Pi, Arduino Nano 33 IoT, and nRF52-based boards.
- Board Dimensions:
- Approx.14.90 x 9.68 mm
- Board Weight:
- 1g
- Pressure Range:
- 300–1100 hPa
- Humidity Range:
- 0–100% rH
- Temperature Range:
- -40 to +85 C
