Arduino for Pressure Sensor

### Sensor Models 1. **Pressure Sensor:** MPXV7002DP     - This sensor will give an analog output voltage proportional to the pressure. 2. **Temperature Sensor:** DS18B20     - This sensor is used for temperature measurement and works digitally over the 1-Wire interface. 3. **Flame Sensor:** YwRobot Flame Sensor     - This sensor can detect fire or other wavelengths at 760 nm ~ 1100 nm light. ### Wiring Guide 1. **Pressure Sensor (MPXV7002DP)**    - Vcc to 5V on Arduino    - GND to GND on Arduino    - Signal to A0 on Arduino     2. **Temperature Sensor (DS18B20)**    - Vcc to 5V on Arduino    - GND to GND on Arduino    - Data to pin 2 on Arduino    - A 4.7k resistor between Vcc and Data pins     3. **Flame Sensor (YwRobot)**    - Vcc to 5V on Arduino    - GND to GND on Arduino    - Signal to A1 on Arduino ### Code ```c #include <OneWire.h> #include <DallasTemperature.h> #define PRESSURE_PIN A0 #define FLAME_SENSOR_PIN A1 #define TEMPERATURE_PIN 2 #define OUTPUT_PIN 13 OneWire oneWire(TEMPERATURE_PIN); DallasTemperature sensors(&oneWire); void setup() {   pinMode(OUTPUT_PIN, OUTPUT);   sensors.begin(); } void loop() {   float pressure = analogRead(PRESSURE_PIN) * (5.0 / 1023.0); // Convert to voltage   pressure = (pressure - 0.5) * 1.0; // Convert voltage to PSI      int flameSensorReading = analogRead(FLAME_SENSOR_PIN);   sensors.requestTemperatures();    float temperatureC = sensors.getTempCByIndex(0);   if (pressure > 0.25 && flameSensorReading > 200 && temperatureC > 50) { // adjust flameSensorReading based on your sensor's threshold     digitalWrite(OUTPUT_PIN, HIGH);   } else {     digitalWrite(OUTPUT_PIN, LOW);   }   delay(1000);  } ``` ### Explanation - **Pressure Sensor:** The code reads an analog value and converts it into voltage, then converts the voltage into pressure in PSI. - **Flame Sensor:** An analog reading is used, and you might need to calibrate the threshold based on the sensor you get. - **Temperature Sensor:** The DS18B20 is read digitally, and the temperature is obtained in Celsius.  ### Notes - Ensure the sensors are compatible with your Arduino Uno, and the libraries (`OneWire` and `DallasTemperature`) are installed. - You may need to calibrate the flame sensor reading and temperature thresholds based on your environmental conditions and the specific sensors you purchase. - The output is set on pin 13, which is the built-in LED pin for simplicity, but you can change this to another pin if needed.