WEEK 15 : STUDENT SUBMIT A COMPLETE DRAFT OF FYP PROPOSAL REPORT TO SUPERVISOR

STUDENT SUBMIT A COMPLETE DRAFT OF FYP PROPOSAL REPORT TO SUPERVISOR

Date: 13/5/2019 (Monday) – 31/5/2019 (Friday)

In this week I make a connection wiring to water level sensor and connect it to the Arduino.

coding to control the water level

// include libraries

// no libraries required

/********************************/

int sensorPin = A0;  // select the input pin (must be analog) for the water level sensor module

int GreenPin = 8;      // select the pin for the green LED

//int BluePin = 7;      // select the pin for the blue LED

//int RedPin = 6;      // select the pin for the red LED

int sensorValue = 0; // variable to store the value coming from the sensor

int speakerPin = 7;  // select the pin for the piezo buzzer

/********************************/

void setup() {

  Serial.begin(9600); // initialize serial communications at 9600 bps

  pinMode(GreenPin, OUTPUT);  // declare the GreenPin as an OUTPUT

 // pinMode(BluePin, OUTPUT);  // declare the BluePin as an OUTPUT

  //pinMode(RedPin, OUTPUT);  // declare the RedPin as an OUTPUT

  pinMode(speakerPin, OUTPUT); // declare the speakerPin as an OUTPUT

}

void loop() {

  sensorValue = analogRead(sensorPin); // read the value from the sensor

  // send the message about water level to serial monitor

  if (sensorValue <= 0) {

    Serial.println(“Water level: 0mm – SAVE”);

  }

  else if (sensorValue > 0 && sensorValue <= 223) {

    Serial.println(“Water lvl:0-5mm”);

  }

  else if (sensorValue > 223 && sensorValue <= 251) {

    Serial.println(“Water lvl: 5-10mm”);

  }

  else if (sensorValue > 251 && sensorValue <= 277) {

    Serial.println(“Water lvl: 10-15mm”);

    digitalWrite(GreenPin, LOW);  // turn the green LED on

  }

  else if (sensorValue > 277 && sensorValue <= 294) {

    Serial.println(“Water lvl: 15-20mm”);

    digitalWrite(GreenPin, LOW);

  }

  else if (sensorValue > 294 && sensorValue <= 311) {

    Serial.println(“Water lvl: 20-25mm”);

    digitalWrite(GreenPin, LOW);  // turn the green LED off

    //digitalWrite(BluePin, HIGH);  // turn the blue LED on

  }

  else if (sensorValue > 311 && sensorValue <= 314) {

    Serial.println(“Water lvl: 25-30mm”);

    digitalWrite(GreenPin, LOW);

  }

  else if (sensorValue > 314 && sensorValue <= 323) {

  Serial.println(“Water lvl: 30-35mm”);

    digitalWrite(GreenPin, LOW);

    digitalWrite(speakerPin, LOW);

  }

  else if (sensorValue > 323) {

    digitalWrite(GreenPin, HIGH);  // turn the blue LED off

    digitalWrite(speakerPin, HIGH); // turn the piezo buzzer on

    delay(500);

    digitalWrite(speakerPin, LOW);

    //digitalWrite(RedPin, HIGH);  // turn the red LED on

    Serial.println(“Water lvl: 35-40mm – Alarm! Alarm!”);

  }

  delay(1000); // delay 1 second

  // take the sensor out of water slowly or fast or if the water level is going down

  // reset the system when sensor out off the water and dry

  //digitalWrite(RedPin, LOW);// turn the red LED off

  digitalWrite(speakerPin, LOW);// turn the speakerPin off

  //digitalWrite(BluePin, LOW);  // turn the blue LED off

  digitalWrite(GreenPin, LOW);  // turn the green LED off

}

As u can see from the figure above shows that the water level sensor detect the water and if the water level reaches maximum level it will activate the alarm.