Version 4
    MCU/MPU/DSP > Development Platforms & Kits > Daughter / Add-on boards >
    • Air quality click
    • Air quality click
    Sample code
    Technical Docs
    Product Brief/Fact sheet
    User Manual/Guide


    Air quality click carries an MQ-135 sensor for detecting poisonous gases that impact air quality in homes and offices. The gas sensing layer on the sensor unit is made of tin dioxide (SnO2), which has lower conductivity in clean air. The conductivity increases with air pollution. The sensor reacts to ammonia (NH3), nitrogen oxides (NOx), benzene, smoke, CO2 and other harmful gases.

    To calibrate the sensor for the environment you’ll be using it in, Air quality click has a small potentiometer that allows you to adjust the load resistance of the sensor circuit. Air quality click communicates with the target board through AN (OUT) mikroBUS™ line. It’s designed to use a 5V power supply only.

    mikroBUS™ is specially designed pinout standard with SPI, I2C, Analog, UART, Interrupt, PWM, Reset and Power supply pins.

    Applications: Air quality detection for homes and offices.


    • MQ-135 high-sensitivity Air quality sensor.
    • Potentiometer for calibration.
    • Designed to use a 5V power supply.
    • mikroBUS™ form factor enables easy integration.
    • Supported in all MikroElektronika compilers.
    • Ready-to-use examples save development time.
    • Affordable price.

    Ships With

    • click Board

    Blog Posts