GSM Based LPG Detector With Sound Alarm

For the sensor array, we define each component i and develop a linear model from the experimental observa- tions The output concentration y c (where c is the index of the particular

It consists of an Atmel Atmega 328P microcontroller, an MQ-9 gas sensor, a buzzer for automatic alarm system, a red LED for warning and an LCD monitor for display

By using thin-film technology electrodes, gas sensors able to detect the gas at a concentration of 10 pp m with a high value of sensitivity. Gas sensor is ab le to react to

This project is based on two ATMEGA 328 Microcontrollers, a SIM 900A GSM module, four PIR sensors, an Ultrasound sensor, a Gas Sensor, TTP223B Digital capacitive Touch Sensor,