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Integration of Surilli GSM with MQ7 Gas Sensor

Visualize the changing values of CO in air using MQ7 gas sensor and Surilli GSM.

BeginnerFull instructions provided15 minutes502
Integration of Surilli GSM with MQ7 Gas Sensor

Things used in this project

Hardware components

Surilli GSM
Surilli GSM
×1
MQ7 Gas Sensor
×1
Jumper wires (generic)
Jumper wires (generic)
×1

Software apps and online services

Arduino IDE
Arduino IDE

Story

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Schematics

MQ7 with Surilli GSM

Code

SurilliGSM_MQ7

C/C++
const int AOUTpin = 0; // The AOUT pin of the CO sensor goes into analog pin A0 of Surilli GSM
const int DOUTpin = 12; // The DOUT pin of the CO sensor goes into digital pin 12 of Surilli GSM
int limit;
int value;

void setup() 

{
  
   Serial.begin(115200); // Sets the baud rate
   pinMode(DOUTpin, INPUT); // Sets the pin as an input to the Surilli GSM
   
}

void loop()

{
   
   value= analogRead(AOUTpin); // Reads the analaog value from the CO sensor's AOUT pin
   limit= digitalRead(DOUTpin); // Reads the digital value from the CO sensor's DOUT pin
   Serial.print("CO value: ");
   Serial.println(value); // Prints the CO value
   Serial.print("Limit: ");
   Serial.println(limit); // Prints the limit reached as either LOW or HIGH (above or underneath)
   delay(1000);
   
}

Credits

Surilli

Surilli

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