How use gas sensor without ardunio.

 Hello guys, In this post we learn how to use gas sensor without ardunio and any microcontroller.

Lets start It :-

*specification 

List of Gas Sensors we can use it without ardunio with my circuit

Sensor Name	Gas to measure
MQ-2	Methane, Butane, LPG, Smoke
MQ-3	Alcohol, Ethanol, Smoke
MQ-4	Methane, CNG Gas
MQ-5	Natural gas, LPG
MQ-6	LPG, butane
MQ-7	Carbon Monoxide
MQ-8	Hydrogen Gas
MQ-9	Carbon Monoxide, flammable gasses
MQ131	Ozone
MQ135	Air Quality
MQ136	Hydrogen Sulphide gas
MQ137	Ammonia
MQ138	Benzene, Toluene, Alcohol, Propane, Formaldehyde gas, Hydrogen
MQ214	Methane, Natural Gas
MQ216	Natural gas, Coal Gas
MQ303A	Alcohol, Ethanol, smoke
MQ306A	LPG, butane
MQ307A	Carbon Monoxide
MQ309A	Carbon Monoxide, flammable gas

 

*Applications of Gas Sensors

• Used in industries to monitor the concentration of the toxic gases.
• Used in households to detect an emergency incidents.
• Used at oil rig locations to monitor the concentration of the gases those are released.
• Used at hotels to avoid customers from smoking.
• Used in air quality check at offices.
• Used in air conditioners to monitor the CO2 levels.
• Used in detecting fire.
• Used to check concentration of gases in mines.
• Breath analyzer.

*Parts List

1.3mm 5v Led

2.resistor(1k)

*Schemactic and Diagram

- do all the connection according to this diagram.

-Add 5v power supply in input wire.

-when gas around the sensor the led will we start glowing.