Arduino-Powered Pellet Boiler

DIY Arduino pellet burner by converting an old wood boiler.

Oct 2, 2017

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Components and supplies

LED (generic)

Arduino 4 Relays Shield

Arduino UNO

RobotGeek Light Sensor

Temperature Sensor

Rotary potentiometer (generic)

Tools and machines

Soldering iron (generic)

Project description

Code

Sketch updated 10/2017 test

arduino

My last sketch, i use a lot of delay specially to keep Arduino waiting, heating cycle is slow, so no multitask is need I use some "subroutines" to clean main code loop.

1
2#include <Servo.h>
3#include <avr/io.h>
4#include <avr/wdt.h>
5Servo  myServo;  // create a servo object
6
7#define Reset_AVR() wdt_enable(WDTO_30MS);  while(1) {} 
8
9// Pin A0 sensore fiamma valore sale se c' luce
10// Pin 5  resistenza
11//Pin 4 ventola
12//Pin 3 coclea
13int res = 5;
14int ventola =  4;
15int cocl =3;
16int fiamm= A0;
17int tempPin= A1;
18int senspell = A2;
19int  tempmin = 48;
20int tempmax = 65;
21float vref = 1.1;
22int nread = 100;
23int  ledgreen = 9; //led verde per accensione avvenuta
24int ledblue = 10; //led blue  per raggiunto temp
25int ledred = 11; // led rosso per blocco
26float media ;
27int  serv=13;
28float tempC;
29int reading;
30
31
32
33// the setup routine runs  once when you press reset:
34void setup() {
35   pinMode (serv ,OUTPUT);
36   pinMode  (fiamm ,INPUT);
37   pinMode (tempPin , INPUT);
38   pinMode (senspell , INPUT);  
39   analogReference( INTERNAL );
40   pinMode (ledred ,OUTPUT);
41   pinMode  (ledgreen,OUTPUT);
42   pinMode (ledblue,OUTPUT);
43     myServo.attach(8); //  attaches the servo on pin 9 to the servo object
44
45   Serial.begin(9600);
46  
47  //seleziono uscite e ingressi su portd (pin da 0 a 7) 
48 DDRD = DDRD |  B11111100;
49}
50
51void loop() {
52  
53controllotemperatura:  controllotemperatura  ();
54                       digitalWrite (serv,LOW);
55  if (media < tempmin)  {
56                         digitalWrite (ledblue,LOW);
57                         digitalWrite  (ledgreen,HIGH);
58                         puliziainizio ();
59                         cicloaccensione();
60                         
61cicloriscaldamento:      cicloriscaldamento();
62                         controllofiamma ();
63                         controllotemperatura  ();
64                   while (media >=55 && media <=65){
65                             Serial.println  ("media compresa");
66                             digitalWrite(serv,HIGH);
67                             funzionerallenta ();
68                             controllofiamma();
69                             controllotemperatura ();}
70                            
71                             
72                             if (media > tempmax)  {
73                             Serial.println("caldo");
74                             digitalWrite  (ledgreen, LOW);
75                             digitalWrite (ledblue,HIGH) ;
76                             funzionespegnimento();
77                             Reset_AVR();}
78                            else goto cicloriscaldamento ;
79       
80}        
81           digitalWrite (ledgreen, LOW);
82           digitalWrite (ledblue,HIGH)  ;
83}
84

#include <Servo.h>
#include <avr/io.h>
#include <avr/wdt.h>
Servo  myServo;  // create a servo object

#define Reset_AVR() wdt_enable(WDTO_30MS);  while(1) {} 

// Pin A0 sensore fiamma valore sale se c' luce
// Pin 5  resistenza
//Pin 4 ventola
//Pin 3 coclea
int res = 5;
int ventola =  4;
int cocl =3;
int fiamm= A0;
int tempPin= A1;
int senspell = A2;
int  tempmin = 48;
int tempmax = 65;
float vref = 1.1;
int nread = 100;
int  ledgreen = 9; //led verde per accensione avvenuta
int ledblue = 10; //led blue  per raggiunto temp
int ledred = 11; // led rosso per blocco
float media ;
int  serv=13;
float tempC;
int reading;



// the setup routine runs  once when you press reset:
void setup() {
   pinMode (serv ,OUTPUT);
   pinMode  (fiamm ,INPUT);
   pinMode (tempPin , INPUT);
   pinMode (senspell , INPUT);  
   analogReference( INTERNAL );
   pinMode (ledred ,OUTPUT);
   pinMode  (ledgreen,OUTPUT);
   pinMode (ledblue,OUTPUT);
     myServo.attach(8); //  attaches the servo on pin 9 to the servo object

   Serial.begin(9600);
  
  //seleziono uscite e ingressi su portd (pin da 0 a 7) 
 DDRD = DDRD |  B11111100;
}

void loop() {
  
controllotemperatura:  controllotemperatura  ();
                       digitalWrite (serv,LOW);
  if (media < tempmin)  {
                         digitalWrite (ledblue,LOW);
                         digitalWrite  (ledgreen,HIGH);
                         puliziainizio ();
                         cicloaccensione();
                         
cicloriscaldamento:      cicloriscaldamento();
                         controllofiamma ();
                         controllotemperatura  ();
                   while (media >=55 && media <=65){
                             Serial.println  ("media compresa");
                             digitalWrite(serv,HIGH);
                             funzionerallenta ();
                             controllofiamma();
                             controllotemperatura ();}
                            
                             
                             if (media > tempmax)  {
                             Serial.println("caldo");
                             digitalWrite  (ledgreen, LOW);
                             digitalWrite (ledblue,HIGH) ;
                             funzionespegnimento();
                             Reset_AVR();}
                            else goto cicloriscaldamento ;
       
}        
           digitalWrite (ledgreen, LOW);
           digitalWrite (ledblue,HIGH)  ;
}

Downloadable files

scheme

Frietzing scheme of the control panel

scheme

Frietzing scheme of the control panel

scheme

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