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How do I use the gas sensor on my Raspberry Pi?
Also connect 3.3V from the Raspberry Pi (LV) and 5V (HV) to the TTL. And also 5V to the VCC pin of the gas sensor and GND from the Raspberry Pi comes to GND on the LV and HV side of the TTL, as well as to GND of the MQ2. I use the 5V of the Raspberry Pi’s.
How do you connect a smoke sensor to a Raspberry Pi?
So to power the smoke sensor, we connect pin 2 of the smoke sensor to the 5V terminal of the raspberry pi and terminal 3 to the GND terminal of the raspberry pi. This gives the smoke sensor the 5 volts it needs to be powered. The output of the sensor goes into the MCP3002 pin CH0, which is pin 2 of the MCP3002.
How is the gas sensor on a Raspberry Pi connected?
If you use a sensor other than the MQ-2 and it has a different voltage, the setup must of course be adjusted. After the MCP3008 is correctly connected, we use port 0 and connect it to RX0 of the TTL. On the opposite side is RX1, which is connected to the analog pin (A0) of the MQ2 sensor.
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.
How does the smoke sensor on the MQ-2 work?
The MQ-2 also has a built-in potentiometer to adjust the sensitivity to smoke. By adjusting the potentiometer, you can change how sensitive it is to smoke, so it’s a form of calibrating it to adjust how much voltage it will put out in relation to the smoke it is exposed to.
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.