Embedded System for Detecting Cigarette Smoke Indoors using STM32 Microcontroller

In everyday life, smokers are often found around us. As we know, a lot of losses caused by cigarette smoke and cigarette smoke itself can also disturb the people around us. In order not to disturb the health of others, there are restrictions in certain rooms for smoking by giving a sign that smoking is prohibited. But some people sometimes ignore the ban. In this study, our system was embedded to give warnings to people who smoke in rooms that cannot smoke. The system will sound the siren if smoke is detected. This system is designed using a STM32 microcontroller and MQ-2 sensor to detect cigarette smoke. From the results of testing the system will work well by directly giving a signal when there is cigarette smoke.