Carbon Dioxide and Carbon Monoxide Level Detector

This paper presents a design and development of a method to measure the Carbon monoxide (CO) and Carbon dioxide (CO
₂
) in air using this instrument for remote monitoring system based on micro-controller. This embedded system is designed using the MQ-7 Carbon Monoxide (CO) gas sensor and the MQ-135 the air quality sensor. The pollutant materials contract with the sensors and numerical reading values of C02 and CO are calculated in particles per million (ppm) unit and then displayed on a display device. A buzzer is connected to the micro-controller as the poisonous gases reaches its safety limits, the buzzer turns on and alarms for danger. On the other hand, the whole system unit is portable.