Contents
What kind of smoke sensor does Raspberry Pi use?
In this project, we will go over how to build a smoke sensor circuit with a Raspberry Pi. The smoke sensor we will use is the MQ-2. This is a sensor that is not only sensitive to smoke, but also to flammable gas. The MQ-2 smoke sensor reports smoke by the voltage level that it outputs.
Is the MQ-2 smoke sensor sensitive to smoke?
The MQ-2 smoke sensor is sensitive to smoke and to the following flammable gases: The resistance of the sensor is different depending on the type of the gas. The smoke sensor has a built-in potentiometer that allows you to adjust the sensor sensitivity according to how accurate you want to detect gas.
How does the MQ-2 gas sensor work with Arduino?
When the smoke concentration is above 1000 ppm, the circuit triggers a buzzer that can be changed in the code as required. This project uses the MQ-2 sensor and an Arduino to determine and detect different smoke intensities.
Is the mQ2 gas sensor compatible with breadboard?
Since MQ2 Gas Sensor is not breadboard compatible, we do recommend this handy little breakout board. It’s very easy to use and comes with two different outputs. It not only provides a binary indication of the presence of combustible gases but also an analog representation of their concentration in air.
Can a Raspberry Pi be used as a microcontroller?
The Raspberry Pi is our microcontroller of choice for this circuit. You can really use any Raspberry Pi board, the Model A or the Model B. In our circuit, the Model B Raspberry Pi board will be used. This can be obtained from a number of different suppliers online.
How many volts does Raspberry Pi gas sensor need?
Using this chip, the Raspberry Pi can interpret analog signals. The 3 leads are Output, V CC, and GND. It’s very basic. The gas sensor needs about 5 volts of power in order to operate. This is done by connecting 5 volts to Vcc and GND.
When does a MQ-2 smoke detector turn on?
The MQ-2 sensor can output the analog and digital signal when the work voltage is 2.5V-5V. When the CO gas is detected by sensor, the signal light turns on and the digital signal output the low-level valtage. In additon, there is a adjustable resistor to change the sensor sensitivity.