Contact us: Him.robotics@gmail.com Get ready for your major/minor project Smoke and Fire Detector using 8051 Microcontroller INTRODUCTION As we know safety a very important aspect in any organization. So we have deiced to make a fire safety and alert system using 8051 microcontrollers. There are many gases available in the environment. Like that there are many sensors available to detect particular gas. In this project, we are going to detect gases generally present in the smoke. So we need to use MQ-2 sensor and also to control and decode the sensor output we are using here 8051 microcontrollers along with output device i.e. LCD and Buzzer. BLOCK DIAGRAM WORKING Working of the circuit is very simple, we use the MQ 2 Smoke sensor for seasoning the presence of smoke generated by the abnormal fire. As we have used a digital out pin of the sensor as a sensor signal, so once the sensor detects any s