The grove gas sensormq2 module is useful for gas leakage detectingin home and industry. The mq series of gas sensors use a small heater inside with an electrochemical sensor. Mq2 is a gas sensor it is able to detect co, smoke, hydrogen, lpg. Mq2 is basically a general purpose gas sensor similar to mq5 which can sense a broad range of gases like lpg, butane, methanech4, hydrogen and in addition to these gases mq2 is sensitive to. The sensor s voltage output varies proportionately with the measured smoke gas in the atmosphere. Mq2 sensor is a gas module and it is suitable to detect hydrogen, lpg, smoke, co, and alcohol. The sensor can operate at temperatures from 20 to 50c and consumes less than 150 ma at 5 v. Nov 18, 2018 mq2 sensor is a gas module and it is suitable to detect hydrogen, lpg, smoke, co, and alcohol.
Grove gas sensormq2 the grove gas sensormq2 module is useful for gas leakage detection home and industry. The resistance of mq2 varies depending on the type of gas. A mechanical device that is sensitive to smoke or particular material in the air that transmits a signal to the measuring instrument. Download the relative codes to the development board.
How to connect mq2 gas sensor to arduino electronics. Bel, alldatasheet, datasheet, datasheet search site for electronic components and semiconductors. Mq2 semiconductor sensor for combustible gas sensitive material of mq2 gas sensor is sno 2, which with lower conductivity in clean air. In this example, you will read the sensor analog output voltage and when the smoke reaches a certain level, it will make sound a buzzer and a red led will. In this tutorial, we will learn how to detect smoke and inflammable gases using an mq2 sensor. It can detect h2, lpg, ch4, co, alcohol, smoke, propane. In terms of current on the 5v line, does that translate to 0. Mq2 gas sensor is also sensible to lpg, alcohol, and methane etc. When i look at the uno specs, im not sure where it states the 5v current limit. Diy arduino smoke detector shield using mq2 gas sensor. Initial development and testing of microcontrollermq2 gas. The mq2 is a sensor that allows gas or smoke detector at concentrations of 300 ppm to 10,000 ppm.
Jan 10, 2017 in this smoke detector circuit with arduino, we have used a mq2 gas sensor to detect preset smoke in the air. This sensor module utilizes an mq2 as the sensitive component and has a protection resistor and an adjustable resistor on board. Mq2 gas sensor has high sensitity to lpg, propane and hydrogen, also could be used to methane and other. In this smoke detector circuit with arduino, we have used a mq2 gas sensor to detect preset smoke in the air. May 05, 2016 this guide shows how to build a smoke detector that beeps when it detects flammable gas or smoke. Sensitive material of mq2 gas sensor is sno2, which with lower conductivity in clean air. Quick acting micro fuse, mq2 datasheet, mq2 circuit, mq2 data sheet. The mq2 gas sensor can detect or measure gasses like lpg, alcohol, propane, hydrogen, co and even methane. It has high sensitivity and fast response time to measure and take the data. It can detect lpg, ibutane, methane, alcohol, hydrogen, smoke and so on. Mq2 semiconductor sensor for combustible gas pololu.
It could be used in gas leakage detecting equipments in family and industry. The smoke sensor has a builtin potentiometer that adjusts the sensitivity of the sensor based on the accuracy of the gas you are testing how does the mq2 work. Interfacing mq2 to arduino gas sensor for smoke butanech4 and lpg in this article, we are going to learn how to interface mq2 gas sensor with arduino. The mq2 is a flammable gas and smoke sensor detects the concentrations of combustible gas in the air and outputs its reading as an analog voltage. Fire detection, multiple sensor units each unit having a mq2 smokegas and a. How to detect concentration of gas by using mq2 sensor. Give your next arduino project a nose for gasses with the mq2 gas sensor module.
The mq2 smoke sensor is sensitive to smoke and to the following flammable gases. But when smoke exist sensor provides an analog resistive output based on concentration of smoke. The analog smoke lpgco gas sensor mq2 module utilizes an mq2 as the sensitive component and has a protection resistor and an adjustable resistor on board. When it comes to measuring or detecting a particular gas the mq series gas sensors are the most commonly used ones. A buzzer is placed as an alarm which gets triggered when smoke level goes beyond. Jan 21, 2018 in this video, i demonstrated how to connect or interface mq2 gas sensor to arduino and how to use gas sensors with arduino. The sensor can measure concentrations of flammable gas of 300 to 10,000 ppm. The mq2 smoke sensor reports smoke by the voltage level that it outputs. I got a few mq2 sensors to hook up to my arduino uno with wifi shield via my breadboard. Code issues 3 pull requests 0 actions projects 0 security insights. Mq2 ch4 methane gas sensor manufacturers datasheet, including full specifications.
The analog smokelpgco gas sensor mq2 module utilizes an mq2 as the. How to connect mq2 gas sensor to arduino arduino project hub. And an lm358 ic for converting smoke sensor output into digital form this function is optional. A simple library to retrieve the information given from the mq 2 sensor in arduino. Sensitivity can be adjusted by potentiometer behind it. When the target combustible gas exist, the sensors conductivity is more higher along with the gas concentration rising. Smoke detection using mq2 gas sensor arduino project hub. This is a sensor that is not only sensitive to smoke, but also to flammable gas.
The grove gas sensor mq2 module is useful for gas leakage detectingin home and industry. Due to its high sensitivity and fast response time, measurement can be taken as soon as possible. Mq2 gas sensor applies sno2 which has a lower conductivity in the clear air as a. Mq2 datasheet, mq2 pdf, mq2 data sheet, mq2 manual, mq2 pdf, mq2, datenblatt, electronics mq2, alldatasheet, free, datasheet, datasheets, data sheet, datas sheets. Smoke detector using mq2 gas sensor and arduino use. Smoke detector using mq2 gas sensor and arduino use arduino. According to the data on the common mq2 smoke gas sensor, the heating element consumes 800mw, and takes 5v. This circuit mainly uses mq2 smokegas sensor and arduino to detect and calculate the level of smoke. This circuit mainly uses mq2 smoke gas sensor and arduino to detect and calculate the level of smoke.
First of all, we need to connect some jumper wires between arduino and mq2 smoke sensor shield. The smoke sensor has a builtin potentiometer that allows you to adjust the sensor digital. In this project, we will go over how to build a smoke sensor circuit with an arduino board. Also, the sensitivity can be adjusted by the potentiometer.
They are used in gas leakage detecting equipments in family and industry and. They are sensitive to a range of gasses and are used indoors at room temperature. Heres the image of our gas sensor and you can see, it has four pins in total. The mq2 gas sensor is sensitive to lpg, ibutane, propane, methane, alcohol, hydrogen and smoke.
Please read the mq2 datasheet 184k pdf for more information about the sensor. If you are planning on creating an indoor air quality monitoring system. It is suitable for detecting h2, lpg, ch4, co, alcohol, smoke or propane. The output is an analog signal and can be read with an analog input of the arduino. When the target flammable gas exist, the sensor s conductivity gets. Mq2 smoke sensor the mq2 gas sensor module detects gas leakage in home and industry. After calibration, the mq2 can detect various gases such as lpg, ibutane, propane, methane, alcohol, hydrogen and fumes. These sensors can either be purchased as a module or as just the sensor alone. Technical data mq2 gas sensor features wide detecting scope fast response and high sensitivity stable and long life simple drive circuit application they are used in gas leakage detecting equipments in family and industry, are suitable for detecting of lpg, ibutane, propane, methane,alcohol, hydrogen, smoke. Pdf 800mw ppm ic4h10 smoke sensor mq2 mq2 gas sensor mq 2 gas sensor and pin configuration mq2. Winsen electronics, manufacture original and new smoke gas sensor, propane gas sensor with long lifespan and low price, for domestic gas leakage alarm and flammable gas alarm use. When the target combustible gas exist, the sensor s conductivity is more higher along with the gas concentration rising.
Somke detector project presentation linkedin slideshare. Jan 17, 2012 somke detector project presentation 1. This is a robust gas sensor suitable for sensing lpg, smoke, alcohol, propane, hydrogen, methane and carbon monoxide concentrations in the air. The resistance of the sensor is different depending on the type of the gas. Smoke sensor mq2 datasheet, cross reference, circuit and application notes in pdf format. This circuit triggers the buzzer when smoke level becomes higher than ppm, this threshold value can be changed in the code according to the requirement.