"Smelling" something bad will trigger again the buzzer and the danger led and so on. No reset required. (MQ-5 Gas Sensor and other equipment required, duh :P) Le wild notes for the MQ5 Sensor (taken ...

Arduino Uno: The microcontroller used to process the sensor input and control the LED and buzzer. MQ-9 Gas Sensor: Used to detect gases such as LPG, propane, and methane. Red LED: Provides a visual ...

Gas detector and Alerting device with Arduino Uno Code Note: This project should not be copied without my permission. //Included Libraries #include "liquidcrystal.h" //MACROS are defined here const ...