kkim20
Published

Green Box: Fully Automated at Home Hydroponics System

The Green Box is an automated hydroponics system.

IntermediateShowcase (no instructions)18,193
Green Box: Fully Automated at Home Hydroponics System

Things used in this project

Hardware components

LED Light Bar, Daylight
LED Light Bar, Daylight
×1
Raspberry Pi 3 Model B
Raspberry Pi 3 Model B
×1
Relay Module (Generic)
×1
pH Sensor Kit
Atlas Scientific pH Sensor Kit
×1
Humidity and Temperature Sensor
Adafruit Humidity and Temperature Sensor
×1
ZX Distance and Gesture Sensor
SparkFun ZX Distance and Gesture Sensor
×1
Grove - Digital Light Sensor
Seeed Grove - Digital Light Sensor
×1
Toggle Switch, Toggle
Toggle Switch, Toggle
×1
EZO-PMP™ Peristaltic Pump
Atlas Scientific EZO-PMP™ Peristaltic Pump
×1
Axial Fan, 12 VDC
Axial Fan, 12 VDC
×1
Air pump
×1
Water pump
×1
Solenoid Valve, 2 Way
Solenoid Valve, 2 Way
×1

Software apps and online services

Arduino IDE
Arduino IDE
Universal Windows Platform (UWP)-Visual studio community 2019

Hand tools and fabrication machines

Laser cutter (generic)
Laser cutter (generic)
Soldering iron (generic)
Soldering iron (generic)
Solder Wire, Lead Free
Solder Wire, Lead Free

Story

Read more

Code

Final Compilation on Arduino

C/C++
using serialevent and switch case functions
#include <SHT1x.h> //fan library
#include <math.h>

//general define
char ID = 0;
String CMD = "";
int subID = 0;
bool split = false;

//light 
int percent = 0;

int relay1 = 22;
int relay2 = 23;
int relay3 = 24;
int pinBright = 2;
//

//fan - Specify data and clock connections and instantiate SHT1x object
#define dataPin  10
#define clockPin 11
SHT1x sht1x(dataPin, clockPin);
//Inital value
float Temperature = 0.0;
float Humidity = 0.0;

bool fanauto = false;

int relay4 = 25; 
int relay5 = 26; 
int relay6 = 27;
int relay7 = 28;
//

//water level 
bool waterlevelauto = false; 

const int trigPin = 6;
const int echoPin = 7;

long duration;
int distance;
int water_max = 15;
int water_level = 0;

int inputWL = 0;

int relay8 = 29;
int relay9 = 30;
//

//air pump 
int relay10 = 31;
//

// nutrient pump 
bool circularauto = false;
//

//data collection (to monitor)
float temp = 0.0;
float humi = 0.0; 
String pH = "";
//

void setup() 
{
  Serial.begin (9600);
  Serial1.begin (9600);
  Serial2.begin (9600);
  Serial2.begin (9600);
  CMD.reserve(20);

  pinMode (relay1, OUTPUT);
  pinMode (relay2, OUTPUT);
  pinMode (relay3, OUTPUT);
  pinMode (pinBright, OUTPUT);
  pinMode (relay4, OUTPUT);
  pinMode (relay5, OUTPUT);
  pinMode (relay6, OUTPUT);
  pinMode (relay7, OUTPUT);
  pinMode (relay8, OUTPUT);
  pinMode (relay9, OUTPUT);
  pinMode (relay10, OUTPUT);
  pinMode (trigPin, OUTPUT);
  pinMode (echoPin, INPUT); 
}

void loop() 
{
   temp = sht1x.readTemperatureC();
   humi = sht1x.readHumidity();
   Round_Temperature(temp);
   Serial2.print ('R');
   Serial2.print ('\r');
   delay (1000);
   pH = Serial2.readStringUntil(13);
   Serial2.readStringUntil(13);
   
   digitalWrite(trigPin, LOW);
   delayMicroseconds(2);
   digitalWrite(trigPin, HIGH);
   delayMicroseconds(10);                // Sets the trigPin on HIGH state for 10 micro seconds
   digitalWrite(trigPin, LOW);
   duration = pulseIn(echoPin, HIGH);    // Reads the echoPin, returns the sound wave travel time in microseconds
   distance = duration*0.034/2;          // Calculating the distance
   water_level = water_max-distance;
   
   Serial.print ("Temperature: ");
   Serial.print (temp);
   Serial.print ("C || ");
   Serial.print ("Humidity: ");
   Serial.print (humi);
   Serial.print ("% || ");
   Serial.print ("pH: ");
   Serial.print (pH);
   Serial.print (" || ");
   Serial.print ("Water Level: ");
   Serial.print (water_level);
   Serial.println ("cm ");


   delay (3000);
  
  if (fanauto == true)
  {
    Temperature = sht1x.readTemperatureC();
    Humidity = sht1x.readHumidity();
    Round_Temperature(Temperature);
    
    if (Temperature >= 28)
    {
      digitalWrite (relay7, HIGH);
    }
    if (Temperature < 28)
    {
      digitalWrite (relay7, LOW);
    }
  }

  if (waterlevelauto == true)
  {
    digitalWrite(trigPin, LOW);
    delayMicroseconds(2);
    digitalWrite(trigPin, HIGH);
    delayMicroseconds(10);                // Sets the trigPin on HIGH state for 10 micro seconds
    digitalWrite(trigPin, LOW);
    
    duration = pulseIn(echoPin, HIGH);    // Reads the echoPin, returns the sound wave travel time in microseconds
    distance = duration*0.034/2;          // Calculating the distance
    water_level = water_max-distance;


    if (water_level < inputWL) 
    {
      digitalWrite (relay8, HIGH);
      digitalWrite (relay9, LOW);
    }
    if (water_level > inputWL) 
    {
      digitalWrite (relay8, LOW);
      digitalWrite (relay9, HIGH); 
    }
  }

  if (circularauto == true)
  {
    digitalWrite (relay8, HIGH);
    digitalWrite (relay9, HIGH);
  }
  if (circularauto == false)
  {
    digitalWrite (relay8, LOW);
    digitalWrite (relay9, LOW);
  }
  
}

void Round_Temperature(float input_temp)
{
  input_temp = input_temp*100;
  input_temp = round(input_temp);
  input_temp = input_temp*0.01;
}

void serial3Event() 
{
  while (Serial3.available()) 
  {
    char inChar = (char)Serial3.read();//receive one byte
    if(inChar==',')
    {
      split = true;
    }
    if(split==false)//split char before ','
    {
      ID = inChar;
    }
    if(split==true)//split char after ','
    {
      if(inChar!=',' & inChar!='.')
      {
        CMD += inChar;
      }
    }
    if (inChar == '.') 
    {
      switch(ID)
      {
        case 'L': //lights
        {
          if (CMD == "A") //auto mode 
          {
            digitalWrite (relay1, LOW); 
            digitalWrite (relay2, LOW);
            digitalWrite (relay3, LOW);
          } 
          if (CMD == "S") //switch mode
          {
            digitalWrite (relay1, HIGH);
            digitalWrite (relay2, HIGH);
            digitalWrite (relay3, LOW);
          }
          if (CMD == "RO") //remote mode 
          {
            digitalWrite (relay1, HIGH);
            digitalWrite (relay2, LOW);
            digitalWrite (relay3, HIGH);
          }
          if (CMD == "RF") 
          {
            digitalWrite (relay1, HIGH);
            digitalWrite (relay2, LOW);
            digitalWrite (relay3, LOW);
          }
        }
        break;
        
        case 'B': //brightness
        {
          percent = CMD.toInt() ;
          percent = (percent * 2.25);
          analogWrite (pinBright, percent); 
        }
        break;

        case 'F': //fan
        {
          if (CMD == "A")
          {
            fanauto = true;
          }
          if (CMD == "S") //Switch Mode
          {
            digitalWrite (relay4, HIGH);
            digitalWrite (relay5, HIGH);
            digitalWrite (relay6, LOW);
            fanauto = false;
          }
          if (CMD == "RO")
          {
            digitalWrite (relay4, HIGH);
            digitalWrite (relay5, LOW);
            digitalWrite (relay6, HIGH);
            fanauto = false;
          }
          if (CMD == "RF")
          {
            digitalWrite (relay4, HIGH);
            digitalWrite (relay5, LOW);
            digitalWrite (relay6, LOW);
            fanauto = false;
          }
        }
        break;
          
        case 'N':
        {
            circularauto = true;
            Serial1.print ("D," + CMD);
            Serial1.print ('\r');
            waterlevelauto = false;

            if (CMD == "S")
            {
              circularauto = false;
            }
        }
        break;
        
        case 'W': //water level
        {
            inputWL = CMD.toInt ();
            if (inputWL >= 5 & inputWL <= 14)
            {
              waterlevelauto = true;
            }
            
            if (inputWL < 5) 
            {
              Serial.println ("Invalid water level: must be between 5 and 14 cm");
              digitalWrite (relay8, HIGH);
              digitalWrite (relay9, LOW);
            }
            if (inputWL > 14)
            {
              Serial.println ("Invalid water level: must be between 5 and 14 cm");
              digitalWrite (relay8, LOW);
              digitalWrite (relay9, HIGH);
            }
        }
        break;

        case 'P': //water pump 
        {
          if (CMD == "O")
          {
            digitalWrite (relay9, HIGH);
          }
          if (CMD == "F")
          {
            digitalWrite (relay9, LOW);
          }
        }
        break;

        case 'V': //valve 
        {
          if (CMD == "O")
          {
            digitalWrite (relay8, HIGH);
          }
          if (CMD == "F")
          {
            digitalWrite (relay8, LOW);
          }
        }
        break;

        case 'A': //airpump 
        {
          if (CMD == "O")
          {
            digitalWrite (relay10, HIGH);
          }
          if (CMD == "F")
          {
            digitalWrite (relay10, LOW);
          }
        }
        break;

        default:
        break;
      }
      split = false;        //reset value
      ID = 0;               //reset value
      CMD = "";             //reset value
    }
  }
}

Credits

kkim20

kkim20

2 projects • 26 followers

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