SKU: SENS-2851
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Mikroe AIR QUALITY 3 CLICK (Mikroe-2953) – eCO₂ & TVOC Air Quality Sensor Board, I²C

₹2,619.00 (Inclusive of all taxes)
Out of Stock

The Mikroe AIR QUALITY 3 CLICK is a mikroBUS-compatible sensor board featuring the ams OSRAM CCS811 IC for measuring equivalent CO₂ (eCO₂) and Total Volatile Organic Compounds (TVOC) via I²C communication. It operates at 3.3V and is designed for rapid integration into portable and stationary air quality monitoring systems.

Features

  • Measures equivalent CO₂ (400–8192 ppm) and TVOC (0–1187 ppb) concentrations.
  • Integrates the ams OSRAM CCS811 digital gas sensor with onboard MCU for processed data output.
  • Communicates via I²C interface for easy connection to host microcontrollers (Arduino, Raspberry Pi, etc.).
  • Features a metal oxide (MOX) sensor microplate with micro-hotplate technology for low power consumption.
  • Standard M-sized Click board (42.9 x 25.4 mm) compatible with all mikroBUS host boards.

Out of stock

Description

The AIR QUALITY 3 CLICK utilizes the CCS811 sensor from ams OSRAM, which combines a metal oxide (MOX) gas sensing element with an integrated microcontroller and ADC. This architecture allows the sensor to perform onboard processing of raw gas readings, outputting calibrated eCO₂ and TVOC values directly via I²C, thereby reducing computational load on the host system. The MOX sensor employs a micro-hotplate design, enabling fast thermal cycling, high reliability, and significantly lower power consumption compared to traditional MOX sensors.

The board includes temperature compensation to enhance measurement accuracy across varying environmental conditions. It is designed for 3.3V operation and provides programmable interrupts to alert the host system when new data is ready or if a baseline calibration should be run. This makes it an ideal, ready-to-use module for developers requiring precise indoor air quality metrics without complex analog signal conditioning.

Key Features

  • Integrated Digital Sensor: Features the ams OSRAM CCS811 IC with onboard MCU and ADC for direct digital output of eCO₂ and TVOC values.
  • Advanced MOX Technology: Utilizes a micro-hotplate-based metal oxide gas sensor for fast response times, low power draw, and long-term stability.
  • I²C Interface: Standard two-wire communication protocol simplifies wiring and software integration with most microcontrollers and SBCs.
  • Onboard Processing: Internal algorithms calculate equivalent values, freeing host MCU resources and accelerating development.
  • Programmable Interrupts: Configurable alerts for data readiness and baseline calibration events enable efficient power management.
  • Temperature Compensation: Integrated compensation element improves measurement accuracy across the operating temperature range.
  • mikroBUS Compatibility: Conforms to the standard M-sized Click board form factor for use with a wide ecosystem of host boards.
  • Optimized Power Profile: The micro-hotplate design enables periodic sensing with very low average power consumption, suitable for battery-powered applications.

Applications

  • Indoor Air Quality Monitors: Integration into wall-mounted or portable devices for offices, schools, and homes to monitor eCO₂ and TVOC levels.
  • HVAC and Building Automation: Demand-controlled ventilation systems that use air quality data to optimize fresh air intake and energy efficiency.
  • Smart Home Sensors: Air quality nodes within IoT networks for environmental monitoring and wellness dashboards.
  • Portable Environmental Loggers: Battery-powered data loggers for assessing air quality in storage areas, vehicles, or during site surveys.
  • Prototyping and Development: Rapid prototyping of air-quality-aware applications using mikroBUS-compatible development boards.

Technical Specifications

Manufacturer Part NumberMikroe-2953
Sensor ICams OSRAM CCS811
Measurement ParametersEquivalent CO₂ (eCO₂), Total Volatile Organic Compounds (TVOC)
eCO₂ Range400 – 8192 ppm
TVOC Range0 – 1187 ppb
Output InterfaceI²C
Operating Voltage3.3V DC
Board Dimensions42.9 mm x 25.4 mm (M size)
CompatibilitymikroBUS
Onboard FeaturesMCU, ADC, Temperature Compensation, Programmable Interrupts
Sensing TechnologyMetal Oxide (MOX) with Micro-hotplate

Frequently Asked Questions

What is the operating voltage of the AIR QUALITY 3 CLICK, and is it 5V tolerant?

The board operates strictly at 3.3V. The I²C lines and the sensor IC are not 5V tolerant. You must use a logic level converter if interfacing with a 5V microcontroller system to prevent damage to the sensor.

How do I read the eCO₂ and TVOC data from this sensor board?

Data is accessed via the I²C interface. The onboard CCS811 IC handles all sensor measurement and processing, providing calibrated eCO₂ (in ppm) and TVOC (in ppb) values in dedicated registers. You simply need to read these registers using standard I²C commands from your host microcontroller.

Does the sensor require a burn-in or calibration period?

Yes, for optimal accuracy, the CCS811 sensor requires a 48-hour burn-in period in fresh, outdoor-quality air (400-450 ppm CO₂) after first use. The device performs automatic baseline calibration over time, but you can also manually trigger a baseline save via I²C command when the sensor is in a known good air environment.

Can I use this Click board with non-mikroBUS development platforms?

Absolutely. While it's designed for mikroBUS, you can connect it directly to any microcontroller with I²C. You need to provide 3.3V power and connect the SDA, SCL, INT, and RST pins (clearly labeled on the board) to corresponding pins on your host system, following the pinout diagram.

Package Includes

  • 1 x Mikroe AIR QUALITY 3 CLICK (Mikroe-2953) Sensor Board

Additional Information

Weight 0.05 kg
Dimensions 7 × 4 × 2 cm