![]() However, we can't provide a formula because the relation between ratio and concentration is nonlinear. In this tutorial, we are going to learn how to use Arduino and MQ2 gas sensor to check the air quality by checking the concentrations of LPG, smoke, alcohol, propane, hydrogen, methane and carbon monoxide, or other flammable gasses. Now, we can get the concentration of gas from the below figureĪccording to the graph, we can see that the minimum concentration we can test is 100ppm and the maximum is 10000ppm, in a other word, we can get a concentration of gas between 0.01% and 1%. ![]() This value can be used as a threshold to detect any increase/decrease in gas concentration. Watch this video to know how to make a gas detector using Maker NANO. In this example, you will read the MQ-2 sensor analog output voltage and when the smoke reaches a certain level, it will make the sound of a buzzer, and a red LED will turn on. With this sensor, we can build a gas leak detector to check if there is a gas leak and send a notification to our mobile phone. Today in this tutorial we are going to make a Smoke Detection Circuit using MQ-2 Gas Sensor & Atmega328p IC. The voltage read from the sensor is displayed. INTRODUCTION The MQ-2 Gas sensor can detect or measure gasses like LPG, Alcohol, Propane, Hydrogen, CO, and even methane. In this example, the sensor is connected to A0 pin. For detailed information about the MQ-2 sensor, please refer to the data-sheet provided in resource section.Ĭonnect the Grove - Gas Sensor(MQ2) to A0 port as shown in the above picture. Please note that the best preheat time for the sensor is above 24 hours. It is a versatile sensor that can detect LPG, smoke, alcohol, propane, hydrogen, methane, and carbon monoxide concentrations in the air. The Grove - Gas Sensor(MQ2) module is useful for gas leakage detecting(in home and. Sensitivity can be adjusted by varying the potentiometer. product quality, such as operating without following manual guide. ![]() The output voltage from the Gas sensor increases when the concentration of gas increases. It is possible to connect the Grove module to Arduino directly by using jumper wires by using the connection as shown in the below table: Connect this module to the A0 port of Base Shield. The examples used in this tutorial makes uses of A0 analog pin. In this tutorial, we are going to learn: How light sensor works How to connect the light sensor to Arduino How to program Arduino to read the state from the light sensor Hardware Required Or you can buy the following sensor kit: 1 × DIYables Sensor Kit 30 types, 69 units Please note: These are affiliate links. This needs to be connected to any one Analog socket in Base Shield. If your project is aimed at obtaining the gas concentration at a very precise level, then we do not recommend this gas sensor. MQ2 Gas Sensor Tutorial for Arduino, ESP8266 and ESP32 - YouTube 0:00 / 0:30 MQ2 Gas Sensor Tutorial for Arduino, ESP8266 and ESP32 DIYI0T 91 subscribers Subscribe Share 3K views. Code snippet is used to upload the readings of the gas sensor. Also, this MQ2 sensor tutorial is presented step by step OK enjoy it now. The detection of certain components in the air usually requires a more precise and costly instrument, which cannot be done with a single gas sensor. Following is the ESP32 arduino code compiled and uploaded to the arduino board using Arduino IDE. Hello guys, This video includes how to use the MQ2 sensor with the Arduino UNO board. It can identify the concentration of gas in the air and highly sensitive to propane, smoke, as well as natural gas.Note that The sensor value only reflects the approximated trend of gas concentration in a permissible error range, it DOES NOT represent the exact gas concentration. RAK12004 is a gas sensor based on the MQ2 sensor module. To do this, use the circuit diagram below. Introduction: In this tutorial we will learn that how a MQ-2 Gas Sensor can be interfaced with NodeMCU to detect flammable gasses in the atmosphere. Not sure what WisBlock modules are mandatory and how to select modules?Ĭheck our WisBlock Documentation Product Description How to use MQ2 gas sensor with Arduino Step by step instructions Step 1. Edge Computing Gateway Based on CM4 (7).
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