MQ-135 gas sensor
Working Principle:
The MQ-135 gas sensor senses the gases like ammonia nitrogen, oxygen, alcohols, aromatic compounds, sulfide and smoke.. MQ-135 gas sensor can be implementation to detect the smoke, benzene, steam and other harmful gases. It has potential to detect different harmful gases. The MQ-135 gas sensor is low cost to purchase.
Pin Configuration:
Advantges:
⦁ Good sensitivity to harmful gases in wide range.
⦁ It has long life and low cost.
⦁ Possesses high sensitivity to ammonia, benzene, sulfide gases.
⦁ It is a simple drive circuit
Vcc: 5v
GND: GND
A0: Analog pin (A0 to A5)
D0: Digitl pi(2 to 13)
Aplications:
⦁ Air quality monitor
⦁ Detection of harmful gases
⦁ Domestic air pollution detection
⦁ Industrial pollution detection
⦁ Portable air pollution detection