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09. Gas & Smoke Sensor


                •  They are commonly used to detect toxic or explosive gasses and measure gas
                    concentration. Gas sensors vary widely in size (portable and fixed), range, and

                    sensing ability. One of the most commonly used gas sensors for toxic identification
                    and smoke detection is the metal oxide based gas sensor



                ❖ Needed tools


                        •  Arduino Uno Board
                        •  Breadboard
                        •  LED Bulb
                        •  Gas Sensor
                        •  Resistor
                        •  Jumper wires



                ❖ Circuit
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