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#include <Servo.h>

Servo myservo;

...

servo.attach(pin)

...

servo.writeMicroseconds(us)

#include <max6675.h>

#include <ModbusRtu.h>

#include <Servo.h>



Servo ESC;



// data array for modbus network sharing

uint16_t au16data[16] = {

  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, -1

};



/**

    Modbus object declaration

    u8id : node id = 0 for master, = 1..247 for slave

    u8serno : serial port (use 0 for Serial)

    u8txenpin : 0 for RS-232 and USB-FTDI

                 or any pin number > 1 for RS-485

*/

Modbus slave(1, 0, 0); // this is slave @1 and RS-232 or USB-FTDI



// Pins for thermocouple MAX6675

int thermoDO = 6;

int thermoCS = 5;

int thermoCLK = 4;



MAX6675 thermocouple(thermoCLK, thermoCS, thermoDO);



// declare variable for Arduino pin connected to solid state relay (SSR)

int relay = 9;



// declare variables for Arduino pins connected to fan controller (L293N)

int fan = 10; // ENA of L239N

int in1 = 11; // IN1 of L239N

int in2 = 12; // IN1 of L239N



// declare variables for Arduino pins to power MAX6675:

int vccPin = 3; // 5v power of MAX6675

int gndPin = 2; // gnd of MAX6675



// slew rate limitations for fan control

#define SLEW_STEP 10 // increase in steps of 10% for smooth transition

int target = 0;

int current = 0;

int potValue;  // value from the analog pin

void slew_fan() { // limit fan speed increases

  target = ((au16data[5] / 100.0) * 255);

  if ( target < current ) { // ramping down, so check rate

    uint8_t delta = current - target;

    if ( delta > SLEW_STEP ) // limit the step size

      delta = SLEW_STEP;

    analogWrite(fan, (current - delta ));

    current = current - delta;

  }

  else if ( target > current ) { // ramping up, so check rate

    uint8_t delta = target - current;

    if ( delta > SLEW_STEP ) // limit the step size

      delta = SLEW_STEP;

    //write current fan value for air control

    analogWrite(fan, (current + delta ));

    current = current + delta;

  }

}





void setup() {

  slave.begin( 19200); // 19200 baud, 8-bits, even, 1-bit stop

  // use Arduino pins

  ESC.attach(8,1000,2000);

  pinMode(relay, OUTPUT);

  pinMode(fan, OUTPUT);

  //fan direction can be reversed by interchanging values for in1 and in2

  pinMode(in1, OUTPUT); digitalWrite(in1, HIGH);

  pinMode(in2, OUTPUT); digitalWrite(in2, LOW);



  pinMode(vccPin, OUTPUT); digitalWrite(vccPin, HIGH);

  pinMode(gndPin, OUTPUT); digitalWrite(gndPin, LOW);

  delay(500);

}



void loop() {

  //write current thermocouple value

  au16data[2] = ((uint16_t) thermocouple.readCelsius() * 100);



  //write current fan value for air control

  // analogWrite(fan, (au16data[5] / 100.0) * 255);

  slew_fan();

  potValue = analogRead(A0);   // reads the value of the potentiometer (value between 0 and 1023)

  potValue = map(potValue, 0, 1023, 0, 180);   // scale it to use it with the servo library (value between 0 and 180)

  ESC.write(potValue);    // Send the signal to the ESC



  //poll modbus registers

  slave.poll( au16data, 16 );



  // heater control:

  digitalWrite(relay, HIGH);

  delay(au16data[4] * 10);

  digitalWrite(relay, LOW);

  delay((100 - au16data[4]) * 10 - 1);

}

potValue = map(potValue, 0, 1023, 0, 180);   // scale it to use it with the servo library (value between 0 and 180)

  ESC.write(potValue);    // Send the signal to the ESC

potValue = map(au16data[5], 0, 100, 0, 180);   // scale it to use it with the servo library (value between 0 and 180)

  ESC.write(potValue);    // Send the signal to the ESC

#include <max6675.h>

#include <ModbusRtu.h>

#include <Servo.h>



Servo ESC;



// data array for modbus network sharing

uint16_t au16data[16] = {

  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, -1

};



/**

    Modbus object declaration

    u8id : node id = 0 for master, = 1..247 for slave

    u8serno : serial port (use 0 for Serial)

    u8txenpin : 0 for RS-232 and USB-FTDI

                 or any pin number > 1 for RS-485

*/

Modbus slave(1, 0, 0); // this is slave @1 and RS-232 or USB-FTDI



// Pins for thermocouple MAX6675

int pinGND = 2;

int pinVCC = 3;

int pinDO = 4;

int pinCS = 5;

int pinCLK = 6;



MAX6675 thermocouple(pinCLK, pinCS, pinDO);



// declare variable for Arduino pin connected to solid state relay (SSR)

int relay = 9;



// declare variables for Arduino pins connected to ESC fan controller

int fan = 10; // pin bianco ESC





// slew rate limitations for fan control

#define SLEW_STEP 10 // increase in steps of 10% for smooth transition

int target = 0;

int current = 0;

int potValue = 40;  // value from the analog pin

void slew_fan() { // limit fan speed increases

  target = ((au16data[5] / 100.0) * 255);

  if ( target < current ) { // ramping down, so check rate

    uint8_t delta = current - target;

    if ( delta > SLEW_STEP ) // limit the step size

      delta = SLEW_STEP;

  }

  else if ( target > current ) { // ramping up, so check rate

    uint8_t delta = target - current;

    if ( delta > SLEW_STEP ) // limit the step size

      delta = SLEW_STEP;

    //write current fan value for air control

  }

}



void setup() {



  slave.begin( 19200); // 19200 baud, 8-bits, even, 1-bit stop

  // use Arduino pins

  ESC.attach(10,1000,2000);

  pinMode(relay, OUTPUT);

  pinMode(fan, OUTPUT);

  delay(100);

}



void loop() {

  {

  //write current thermocouple value

    au16data[2] = ((uint16_t) thermocouple.readCelsius() * 100);

    

  // analogWrite(fan, (au16data[5] / 100.0) * 255);

  slew_fan();

  potValue = map(au16data[5], 0, 100, 0, 180);   // scale it to use it with the servo library (value between 0 and 180)

  ESC.write(potValue);    // Send the signal to the ESC

  slave.poll( au16data, 16 );



  // heater control:

  digitalWrite(relay, HIGH);

  delay(au16data[4] * 10);

  digitalWrite(relay, LOW);

  delay((100 - au16data[4]) * 10 - 1);

}

}