Smoke Detector

Aim

The goal of this activity is to detect smoke using an MQ135 gas sensor.

Materials Required

  1. Breadboard -1
  2. 9V Battery -1
  3. Buzzer-1
  4. MQ-135  -1
  5. Several Jumper Wires 

Wiring Diagram

Desired Outcome

 Smoke level can be detected and activates the buzzer, when smoke level is high.