Mq 135 Gas Sensor Arduino Code

The alcohol gas sensor we used is the mq 135 sensor.

Mq 135 gas sensor arduino code.

The mq 135 gas sensor module has four pins standard male headers as shown above. What is mq 135 gas sensor and how does it work. Pin wiring to arduino uno. Simply we have interfaced mq 135 gas sensor module with arduino and 16 2 lcd module for display.

Since ao is a varying voltage this pin should be connected to one analog input of a microcontroller the do pin is an open collector digital output but with a pull up resistor onboard that becomes low when the detection level exceeds a predefined level. The mq 2 sensor has 4 pins. Simply we have interfaced mq 135 gas sensor module with arduino and 16 2 lcd module for display. Arduino and mq2 gas sensor.

First i started with a very simple analog read to check the values in my computer hobby room with a co2 ppm around 650. This is a sensor that is not only sensitive to alcohol particularly ethanol which is the type of alcohol that is found in wine beer and liquor. It is suitable for detecting h2 lpg ch4 and co. This current is known as heating current through it the gases coming close to the sensing element get ionized and.

Measure co2 with mq 135 and arduino. The output can be an analog signal a0 that can be read with an analog input of the arduino or a digital output d0 that can be read with a digital input of the arduino. I had bought 3 mq 135 gas sensors on aliexpress to test if it is possible to measure co2 with them. The grove gas sensor mq2 module is useful for gas leakage detection home and industry.

This sensing element is subjected to current through connecting leads. The gas sensor module consists of a steel exoskeleton under which a sensing element is housed. Air quality sensor is for detecting a wide. The smoke sensor we used is the mq 135 sensor.

Mq 135 gas sensor is a hazardous gas detection apparatus for the family the environment suitable for ammonia aromatic compounds sulfur benzene vapor smoke and other gases harmful gas detection gas sensitive element test concentration.