Advanced Air Quality & All-in-One Environmental Sensor Board

The 7Semi All-in-One Air Quality & Environmental Sensor Board is a compact, multi-parameter sensing module designed for continuous indoor air quality and environmental monitoring. Integrating advanced particulate matter, gas, and atmospheric sensing technologies, the board measures PM1.0, PM2.5, PM4.0, PM10, carbon dioxide (CO₂), temperature, relative humidity, atmospheric pressure, and VOC and NOx indices.

An onboard microcontroller manages sensor communication, measurement acquisition, and data processing, providing real-time environmental data through a 3.3V UART interface. The board also features I2C and Qwiic-compatible connections for integration into embedded monitoring systems.

Designed for indoor air quality monitoring, HVAC systems, smart buildings, industrial automation, and IoT applications, the board combines multiple environmental measurements in a single compact platform. Its continuous monitoring capability and automatic communication recovery mechanisms support reliable environmental data acquisition.

Key Features

• All-in-One Air Quality Monitoring: Combines particulate matter, gas, temperature, humidity, and atmospheric pressure measurements in a single compact board.

• Particulate Matter Measurement: Measures PM1.0, PM2.5, PM4.0, and PM10 concentrations in µg/m³.

• Carbon Dioxide Monitoring: Measures CO₂ concentration in ppm for indoor air quality and ventilation assessment.

• VOC & NOx Index Monitoring: Provides VOC and NOx indices for tracking relative changes in gaseous air pollutants.

• Temperature & Humidity Measurement: Measures ambient temperature in degree Celsius and relative humidity in %RH.

• Atmospheric Pressure Measurement: Measures barometric pressure in hPa for environmental monitoring.

• Altitude Estimation: Calculates approximate altitude from atmospheric pressure measurements.

• Onboard Microcontroller: Acquires and processes sensor measurements for continuous environmental monitoring.

• Processed UART Data Output: Provides processed environmental measurements through a 3.3V UART interface at 115200 baud in comma-separated text format.

• Direct I2C Sensor Access: Allows external microcontrollers to communicate directly with the onboard sensors through I2C and Qwiic-compatible connections.

• Compact PCB Design: Features compact PCB with accessible interfaces for embedded applications.

What’s Included

• 1 × 7SEMI Air Quality Sensor Board (STM32G0B0KET6 + SEN66 + BMB585)

Resources

• User Guide and more
• SEN66 Datasheet
• BMB585 Datasheet
• 7SemiVlab – Virtual Lab (Interactive Demos & Sensor Testing)