If someone will not survive after smoking a cigarette, then this smoke detector will detect it, it also detects the leakage gas in the house - How To Make Smoke & Gas Leakeg Detector System
Hello friends, you can use this project as both a smoke alarm system and a gas leakeg system. You can also make this project for your school project.
In this we have used these components
.
MQ 2 sensor
5v relay module
some jumper wires
5v buzzer
You can use both a charger or a battery to power this circuit.
You can also use a water pump, but for this you need water and also need to hold water.
This is the diagram of smoke alarm system -
what power supply did you use in the video