Project Description
In this project, you will build the sensor Analog output voltage and when the smoke reaches a certain level, it will make sound a buzzer and a red LED will turn on.
When the output voltage is below that level, a green LED will be on.
Pin Connections:
- Connect sensor A0 pin to Arduino A5 pin
- Connect sensor GND pin to GND
- Connect sensor Vcc pin to Vcc
- Connect buzzer +ve to Arduino pin 10
- Connect buzzer -Ve to GND through 221ohm resistor
- Connect +ve pin of Red led to Arduino pin 12
- Connect -ve pin of red led to GND through 221ohm resistor
- Connect +ve pin of Green led to Arduino pin 11
- Connect -ve pin of Green led to GND through 221ohm resistor
Circuit Diagram
Applications
- Detects or measure Gases like LPG, Alcohol, Propane, Hydrogen, CO and even methane
- Air quality monitor
- Gas leak alarm
- Safety standard maintenance
- Maintaining environment standards in hospitals
Package Includes
- 1 x Arduino Uno
- 1 x Uno cable
- 1 x MQ-2 Smoke detection sensor
- 1 x Breadboard
- 1 x Male/male jumper wire
- 1x 5mm LED Red
- 1 x 5mm LED Green
- 1 x Buzzer
- 3 x Resistor 221ohm
- 1 x 9v battery
- 1 x Battery snapper connector
Tutorial Link
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