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Arduino UNO Fire and Gas Detecting Robot with SIM800L SMS and Call Alerts

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Fire and Gas Detecting Robot with Call and SMS Alert

Summary

This project involves a fire and gas detecting robot that uses various sensors to detect hazards. Upon detection, it sends an SMS and makes a call using the SIM800L module. The robot also controls motors for movement and activates a water pump via a relay in case of fire. The system is controlled by an Arduino UNO microcontroller.

Component List

  1. Motor with reducer

    • Pins: 3 - 6 VCC, GND
    • Description: Motor with a built-in reducer for controlled speed.

  2. Motor amarillo motorreductor hobby

    • Pins: vcc, GND
    • Description: Hobby motor with a built-in reducer.

  3. 5V Battery

    • Pins: positive, negative
    • Description: Power source for the circuit.

  4. 5V Mini Water Pump

    • Pins: positive pin, negative pin
    • Description: Water pump activated in case of fire.

  5. 1 Channel 5V Relay Module

    • Pins: VCC+, VCC- (GND), IN, N.O., COM, N.C.
    • Description: Relay module to control the water pump.

  6. 7.4V Battery

    • Pins: +, -
    • Description: Additional power source for the circuit.

  7. SIM800L

    • Pins: NFT, RING, VCC, DTR, RST, MIC +, RXD, MIC-, TXD, SPK+, GND, SPK-
    • Description: GSM module for sending SMS and making calls.

  8. Arduino UNO

    • Pins: UNUSED, IOREF, Reset, 3.3V, 5V, GND, Vin, A0, A1, A2, A3, A4, A5, SCL, SDA, AREF, D13, D12, D11, D10, D9, D8, D7, D6, D5, D4, D3, D2, D1, D0
    • Description: Microcontroller to control the entire system.

  9. L293 Motor Driver

    • Pins: A1, A2, EN_A, VCC, GND, EN_B, B2, B1, MA 2, MA1, -V, +V, MB1, MB2
    • Description: Motor driver to control the motors.

  10. KY-026 Flame Sensor

    • Pins: AO, GND, VCC, DO
    • Description: Sensor to detect flames.

  11. Buck Converter

    • Pins: IN+, IN-, OUT+, OUT-
    • Description: Voltage regulator to step down voltage.

  12. MQ-2

    • Pins: GND, VCC, ANALOG, Digital
    • Description: Gas sensor to detect gas leaks.

  13. Micro Servo 9G

    • Pins: GND, +5V, PWM
    • Description: Servo motor for additional mechanical control.

Wiring Details

Motor with reducer

Motor amarillo motorreductor hobby

5V Battery

5V Mini Water Pump

1 Channel 5V Relay Module

7.4V Battery

SIM800L

Arduino UNO

L293 Motor Driver

KY-026 Flame Sensor

Buck Converter

MQ-2

Micro Servo 9G

Code Documentation

/*
 * Fire and Gas Detecting Robot with Call and SMS Alert
 *
 * This code integrates fire and gas sensors to detect hazards. Upon detection,
 * it sends an SMS and makes a call using the SIM800L module. It also controls
 * motors for movement and activates a water pump via a relay in case of fire.
 */

#include <Servo.h>

// Pin definitions
const int flameSensor1Pin = 4;
const int flameSensor2Pin = 5;
const int flameSensor3Pin = 6;
const int gasSensorPin = 7;
const int relayPin = 12;
const int motorA1Pin = 8;
const int motorA2Pin = 9;
const int motorB1Pin = 10;
const int motorB2Pin = 11;
const int servoPin = 13;
const int sim800lRxPin = 2;
const int sim800lTxPin = 3;

Servo myservo;

void setup() {
  // Initialize serial communication
  Serial.begin(9600);

  // Initialize pins
  pinMode(flameSensor1Pin, INPUT);
  pinMode(flameSensor2Pin, INPUT);
  pinMode(flameSensor3Pin, INPUT);
  pinMode(gasSensorPin, INPUT);
  pinMode(relayPin, OUTPUT);
  pinMode(motorA1Pin, OUTPUT);
  pinMode(motorA2Pin, OUTPUT);
  pinMode(motorB1Pin, OUTPUT);