++
/*
 * Robojax_WCS_OverCurrent
 * Read current and control a relay to disconnect load at a certain current value.
 (There is another version of this with an LCD. Check the library.)
 * This is Arduino code based on the Robojax WCS library 
 * for Winson WSC Current Sensor to measure current.
 Get the Robojax WCS Arduino library: http://robojax.com/L/?id=230
 * 
 * Watch video instructions for this code: https://youtu.be/vs7Nw107AOo


 * Related Videos:
 * Introduction to Winson WCS Sensors: https://youtu.be/z-s8UvCWGxY
 * Display current on LCD: https://youtu.be/-pg7jbkaB6A
 * Overcurrent protection with WCS Current sensors: https://youtu.be/vs7Nw107AOo
 * Measure Current using ESP8266 NodeMCU, D1 Mini over Wifi:
 * Measure current using ESP32 Bluetooth on mobile devices:
 
 
 The LCD library is taken from: https://github.com/fdebrabander/Arduino-LiquidCrystal-I2C-library
 
 * Written on July 26, 2020 by Ahmad Shamshiri in Ajax, Ontario, Canada
 * www.Robojax.com
  Model of the sensor to select 
     //direct wiring series
    0  "WCS38A25",//0
    1  "WCS37A50",//1
    2  "WCS2801",//2
    3  "WCS2702",//3
    4  "WCS2705",//4
    5  "WCS2810",//5
    6  "WCS2720",//6
    7  "WCS2750",//7
    8  "WCS3740",//8
      
      //through-hole sensor
    9  "WCS1500",//9
    10  "WCS1600",//10
    11  "WCS1700",//11
    12  "WCS1800",//12
    13  "WCS2800",//13
    14  "WCS6800",//14
      
      //AC to DC Current sensor
    15  "WCS2202",//15


 * Get this code and other Arduino codes from Robojax.com.
 Learn Arduino step by step in a structured course with all material, wiring diagrams, and libraries
 all in one place. 

If you found this tutorial helpful, please support me so I can continue creating 
content like this. 

or make a donation using PayPal http://robojax.com/L/?id=64

 *  * This code is "AS IS" without warranty or liability. Free to be used as long as you keep this note intact.* 
 * This code has been downloaded from Robojax.com
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.

*/
#include <Wire.h> 
#include <Robojax_WCS.h>
#define MODEL 12
#define SENSOR_PIN A0 //pin for reading sensor
#define SENSOR_VCC_PIN 8 //pin for powring up the sensor
#define ZERO_CURRENT_LED_PIN 2 //zero current LED pin

#define ZERO_CURRENT_WAIT_TIME 5000 //wait for 5 seconds to allow zero current measurement
#define CORRECTION_VLALUE 164 //mA
#define MEASUREMENT_ITERATION 100
#define VOLTAGE_REFERENCE  5000.0 //5000mv is for 5V
#define BIT_RESOLUTION 10
#define DEBUG_ONCE true

//Settings for relay control
const int RELAY_PIN = 3;
const float CURRENT = 12.5;
const int relayTrigerType = HIGH;
int relayON, relayOFF;
const int HOLD_FOR = 6000;
bool STOP=false;
//////////// end of relay control settings


Robojax_WCS sensor(
          MODEL, SENSOR_PIN, SENSOR_VCC_PIN, 
          ZERO_CURRENT_WAIT_TIME, ZERO_CURRENT_LED_PIN,
          CORRECTION_VLALUE, MEASUREMENT_ITERATION, VOLTAGE_REFERENCE,
          BIT_RESOLUTION, DEBUG_ONCE           
          );

void setup()
{
  //Robojax.com WCS Current Sensor Relay Control 20200726
  Serial.begin(9600);
  Serial.println("Robojax WCS Library Relay Control");
  sensor.start();
  Serial.print("Sensor: "); Serial.println(sensor.getModel());
  Serial.print("Library Version:");Serial.println(sensor.version());
  //sensor.printModels();//prints all supported WCS models
  
    pinMode(RELAY_PIN, OUTPUT);
  if(relayTrigerType ==HIGH)
  {
    digitalWrite(RELAY_PIN,LOW); //define pin for relay 
    relayON =HIGH;//set relayON for HIGH trigger
    relayOFF=LOW; //set realyOFF for HIGH trigger 
  }else{
    digitalWrite(RELAY_PIN,HIGH);  
    relayON =LOW;//set relayON for LOW trigger
    relayOFF=HIGH;//set relayOFF for LOW trigger
  }
  //Robojax.com WCS Current Sensor Relay Control 20200726
}//setup() end

void loop()
{ 
    //Robojax.com WCS Current Sensor Relay Control 20200726
  sensor.printCurrent();
  relayControl();

  delay(1000);//wait for 1 second
  
   if(sensor.getCurrent() > 8.5 )
  {
     //do something when current is greater than 8.5A
  }  
	//sensor.printDebug();
  //Robojax.com WCS Current Sensor Relay Control 20200726  
}//loop end


/*
 * relayControl()
 * @brief turns relay ON or OFF when CURRENT is equal sensor.getCurrent()
 * @param none
 * @return none
 * Written by Ahmad Shamshiri for robojax.com
 * on July 26, 2020 in Ajax, Ontario, Canada
 */

void relayControl()
{
    //Robojax.com WCS Current Sensor Relay Control 20200726
  if(sensor.getCurrent() >= CURRENT )
  {
    digitalWrite(RELAY_PIN, relayON);
    Serial.print("Current reached: ");
    Serial.print(CURRENT);Serial.println("A");
    
    Serial.println("Relay turned ON");
    if(STOP)
    {
      Serial.println("Waiting for ever");
      while(1);//wait for ever
    }else{
    Serial.print("Waiting for ");
    Serial.print(HOLD_FOR/1000);Serial.println(" Seconds");
      delay(HOLD_FOR);//wait for this much time
    }
  }else{
    digitalWrite(RELAY_PIN, relayOFF);   
  }  
    //Robojax.com WCS Current Sensor Relay Control 20200726
}//relayControl() end