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smart_watering_system.ino
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#include <LiquidCrystal.h>
int rs = 2;
int en = 3;
int d0 = 4;
int d1 = 5;
int d2 = 6;
int d3 = 7;
int trig = 8;
int echo = 9;
float duration;
float height;
float moisture = A0;
float moisture_percent;
float minimum_moisture_percent;
float moisture_value;
int pump = 10;
float pie = 3.142;
float empty_volume;
float remain_volume;
float total_volume;
float tank_percent;
int alarm = 11;
float heightOfTank = 0;
float minimum_moisture = 0;
float maximum_moisture = 0;
float tankRadius = 0;
int page = 0;
int alarm_dt = 100;
int dt = 300;
int ultrasonic_dt = 10;
int nextBtn_dt = 500;
int longPressDuration = 30;
int increase_btn = 12;
int decrease_btn = 13;
int timer;
LiquidCrystal lcd (rs, en, d0, d1, d2, d3);
void setup() {
pinMode(trig, OUTPUT);
pinMode(echo, INPUT);
pinMode(pump, OUTPUT);
pinMode(alarm, OUTPUT);
pinMode(moisture, INPUT);
pinMode(increase_btn, INPUT);
pinMode(decrease_btn, INPUT);
lcd.begin(16, 2);
Serial.begin(9600);
for (int i = 0; i <= 23; i++){
lcd.setCursor(0,0);
lcd.scrollDisplayLeft();
lcd.print(" Automatic Flower Watering System");
delay(dt);
lcd.noAutoscroll();
}
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Your H.O.T: 0.00");
while (page <= 4){
while (page == 0){
if (digitalRead(increase_btn) == 1){
delay(dt);
timer = 0;
while ((digitalRead(increase_btn) == 1) && (timer <= longPressDuration)){
timer ++;
}
if (( timer >= longPressDuration ) && (heightOfTank > 0)){
page += 1;
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Your R.O.T: 0.00");
lcd.setCursor(12,0);
lcd.print(tankRadius);
}
else{
heightOfTank +=1;
if (heightOfTank >= 99){
heightOfTank = 99;
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Your H.O.T: ");
lcd.setCursor(12,0);
lcd.print(heightOfTank);
}
else{
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Your H.O.T: ");
lcd.setCursor(12,0);
lcd.print(heightOfTank);
}
}
}
else if (digitalRead(decrease_btn) == 1){
delay (dt);
heightOfTank -= 1;
if (heightOfTank <= 0){
heightOfTank = 0;
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Your H.O.T: ");
lcd.setCursor(12,0);
lcd.print(heightOfTank);
}
else{
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Your H.O.T: ");
lcd.setCursor(12,0);
lcd.print(heightOfTank);
}
}
}
while (page == 1){
if (digitalRead(increase_btn) == 1){
delay(dt);
timer = 0;
while ((digitalRead(increase_btn) == 1) && (timer <= longPressDuration)){
timer ++;
}
if (( timer >= longPressDuration ) && (tankRadius > 0)){
page += 1;
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Min Moisture: ");
lcd.setCursor(12,0);
lcd.print(minimum_moisture);
}
else{
tankRadius +=1;
if (tankRadius >= 99){
tankRadius = 99;
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Your R.O.T: ");
lcd.setCursor(12,0);
lcd.print(tankRadius);
}
else{
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Your R.O.T: ");
lcd.setCursor(12,0);
lcd.print(tankRadius);
}
}
}
else if (digitalRead(decrease_btn) == 1){
delay (dt);
timer = 0;
while((digitalRead(decrease_btn) ==1) && (timer <= longPressDuration)){
timer++;
}
if ( timer >= longPressDuration ){
page -= 1;
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Your H.O.T: 0.00");
lcd.setCursor(12,0);
lcd.print(heightOfTank);
}
else{
tankRadius -= 1;
if (tankRadius <= 0){
tankRadius = 0;
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Your R.O.T: ");
lcd.setCursor(12,0);
lcd.print(tankRadius);
}
else{
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Your R.O.T: ");
lcd.setCursor(12,0);
lcd.print(tankRadius);
}
}
}
}
while (page == 2){
if (digitalRead(increase_btn) == 1){
delay(dt);
timer = 0;
while ((digitalRead(increase_btn) == 1) && (timer <= longPressDuration)){
timer ++;
}
if (( timer >= longPressDuration ) && (minimum_moisture > 0)){
page += 1;
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Max Moisture: ");
lcd.setCursor(14,0);
lcd.print(maximum_moisture);
}
else{
minimum_moisture += 1;
if (minimum_moisture >=99){
minimum_moisture = 99;
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Min Moisture: ");
lcd.setCursor(14,0);
lcd.print(minimum_moisture);
}
else{
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Min Moisture: ");
lcd.setCursor(14,0);
lcd.print(minimum_moisture);
}
}
}
else if (digitalRead(decrease_btn) ==1 ){
delay (dt);
timer = 0;
while((digitalRead(decrease_btn) ==1) && (timer <= longPressDuration)){
timer++;
}
if ( timer >= longPressDuration ){
page -= 1;
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Your R.O.T: ");
lcd.setCursor(12,0);
lcd.print(tankRadius);
}
else{
minimum_moisture -= 1;
if (minimum_moisture <= 0){
tankRadius = 0;
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Min Moisture: ");
lcd.setCursor(14,0);
lcd.print(minimum_moisture);
}
else{
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Min Moisture: ");
lcd.setCursor(14,0);
lcd.print(minimum_moisture);
}
}
}
}
while (page == 3){
if (digitalRead(increase_btn) == 1){
delay(dt);
timer = 0;
while ((digitalRead(increase_btn) == 1) && (timer <= longPressDuration)){
timer ++;
}
if (( timer >= longPressDuration ) && (maximum_moisture > 0) && (minimum_moisture< maximum_moisture)){
page += 1;
lcd.clear();
}
else{
maximum_moisture += 1;
if (maximum_moisture >=99){
maximum_moisture = 99;
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Max Moisture: ");
lcd.setCursor(14,0);
lcd.print(maximum_moisture);
}
else{
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Max Moisture: ");
lcd.setCursor(14,0);
lcd.print(maximum_moisture);
}
}
}
else if (digitalRead(decrease_btn) == 1){
delay (dt);
timer = 0;
while((digitalRead(decrease_btn) ==1) && (timer <= longPressDuration)){
timer++;
}
if ( timer >= longPressDuration ){
page -= 1;
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Min Moisture: ");
lcd.setCursor(14,0);
lcd.print(minimum_moisture);
}
else {
maximum_moisture -= 1;
if (maximum_moisture <= 0){
maximum_moisture = 0;
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Max Moisture: ");
lcd.setCursor(14,0);
lcd.print(maximum_moisture);
}
else{
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Max Moisture: ");
lcd.setCursor(14,0);
lcd.print(maximum_moisture);
}
}
}
}
while (page == 4){
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Your Values are: ");
lcd.setCursor(0,1);
lcd.print("H=");
lcd.setCursor(2,1);
lcd.print((int)heightOfTank);
lcd.setCursor(4,1);
lcd.print("R=");
lcd.setCursor(6,1);
lcd.print((int)tankRadius);
lcd.setCursor(8,1);
lcd.print("m=");
lcd.setCursor(10,1);
lcd.print((int)minimum_moisture);
lcd.setCursor(12,1);
lcd.print("M=");
lcd.setCursor(14,1);
lcd.print((int)maximum_moisture);
delay(dt);
if (digitalRead(increase_btn) == 1){
delay(dt);
lcd.clear();
page += 1;
}
else if (digitalRead(decrease_btn) == 1){
delay(dt);
lcd.clear();
page -=1;
}
}
}
delay(500);
}
void loop() {
digitalWrite(trig, LOW);
delayMicroseconds(ultrasonic_dt);
digitalWrite(trig, HIGH);
delayMicroseconds(ultrasonic_dt);
digitalWrite(trig, LOW);
duration = pulseIn(echo, HIGH);
moisture_value = analogRead(moisture);
moisture_percent = (moisture_value / maximum_moisture) * 100.;
minimum_moisture_percent = (minimum_moisture / maximum_moisture) * 100.;
total_volume = (pie * (tankRadius * tankRadius) * heightOfTank);
remain_volume = (total_volume - (pie * (tankRadius * tankRadius) * 0.0343 *(duration/2)));
tank_percent = ((remain_volume / total_volume) * 100.);
if (tank_percent <= 0) {
tank_percent = 0;
}
lcd.setCursor(0, 0);
lcd.print("Moisture: ");
lcd.setCursor(0, 1);
lcd.print("WaterLvl: ");
if (moisture_percent >= 100) {
lcd.setCursor(9, 0);
lcd.print(100);
lcd.print("%");
delay(dt);
}
else {
lcd.setCursor(9, 0);
lcd.print(moisture_percent);
lcd.print("%");
delay(dt);
}
lcd.setCursor(10, 1);
lcd.print(tank_percent);
lcd.print("%");
delay(50);
if (moisture_percent <= minimum_moisture_percent) {
if (tank_percent >= 50) {
digitalWrite(pump, HIGH);
digitalWrite(alarm, LOW);
}
else {
digitalWrite(alarm, HIGH);
delay(alarm_dt);
digitalWrite(alarm, LOW);
digitalWrite(pump, LOW);
}
}
else {
digitalWrite(alarm, LOW);
digitalWrite(pump, LOW);
}
}