CIRCUIT
PROGRAM
//#include <EEPROM.h>
#define TRIAC1 9
#define TRIAC2 A2
#define zerocrossingpin A5
unsigned short int ZERO,triggertime=20,fan=0;
char uart_data;//SERIAL COMMUNICATION
void setup()
{
Serial.begin(115200); delay(100);messagereadinit();
triacinit();
pinMode(zerocrossingpin,INPUT_PULLUP);
digitalWrite(TRIAC1, HIGH);delay(1000);digitalWrite(TRIAC1, LOW);
//triggertime=EEPROM.read(10);
}
void loop()
{
if(triggertime>0 && triggertime<9 && fan==1)
{
waitfornextzerocrossing ();
delay(triggertime); digitalWrite(TRIAC1, HIGH);
delayMicroseconds(200); digitalWrite(TRIAC1 , LOW);
}
else if(triggertime==0 && fan==1){digitalWrite(TRIAC1, HIGH);wifi();wifi();wifi();wifi();}
else if(triggertime>10 || fan==1 )digitalWrite(TRIAC1, LOW);
wifi();
if(triggertime<5){wifi();wifi();}
}
void triacinit(void)
{
pinMode(TRIAC1, OUTPUT);pinMode(TRIAC2, OUTPUT);
digitalWrite(TRIAC1 , LOW);digitalWrite(TRIAC2, LOW);
}
void wifi(void)
{
if(Serial.available()>0)
{
uart_data=Serial.read();
if(uart_data==':')
{
while(!(Serial.available()>0));
uart_data=Serial.read();
if(uart_data=='+' && fan==1)
{
fancontrol();
}
else if(uart_data=='A')
{
digitalWrite(TRIAC2, HIGH); // Serial.println("light ON");
}
else if(uart_data=='a')
{
digitalWrite(TRIAC2, LOW);// Serial.println("light OFF");
}
else if(uart_data=='B')
{
fan=1;// Serial.println("FAN ON");
}
else if(uart_data=='b')
{
fan=0;// Serial.println("FAN OFF");
}
}
}
}
void waitfornextzerocrossing (void)
{
do
{
ZERO =digitalRead(zerocrossingpin);
}
while(!ZERO); //wait until zero reaches--HIGH PULSE
}
void fancontrol(void)
{
while(!(Serial.available()>0));//skips 1st zero
uart_data=Serial.read();
while(!(Serial.available()>0));//skips 2nd zero
uart_data=Serial.read();
while(!(Serial.available()>0));//msb of speed
uart_data=Serial.read();
triggertime=100*(uart_data-0x30);
while(!(Serial.available()>0));//middle byte of speed
uart_data=Serial.read();
triggertime=triggertime + 10*(uart_data-0x30);
while(!(Serial.available()>0));//lsb byte of speed
uart_data=Serial.read();
triggertime=triggertime + (uart_data-0x30);
triggertime=triggertime*10/255;
if(triggertime==1)
{
triggetime=8;
// EEPROM.write(10,triggertime);
}
else if(triggertime==2)
{
triggertime=7;
// EEPROM.write(10,triggertime);
}
else if(triggertime==3 || triggertime==4)
{
triggertime=5;
// EEPROM.write(10,triggertime);
}
else if(triggertime==5 || triggertime==6)
{
triggertime=4;
// EEPROM.write(10,triggertime);
}
else if(triggertime==7 || triggertime==8)
{
triggertime=2;
// EEPROM.write(10,triggertime);
}
else if(triggertime>8)
{
triggertime=0;
//EEPROM.write(10,triggertime);
}
else if(triggertime==0)
{
triggertime=30;
//EEPROM.write(10,triggertime);
}
//Serial.print("triggertime=");Serial.println(triggertime);
}
void messagereadinit(void)
{
Serial.print("AT+CWMODE=3");//TEXT MODE
Serial.write(0xd);//ENTER
Serial.write(0xa);//NEW LINE
delay(500);
Serial.print("AT+CIPMUX=1");//TEXT MODE
Serial.write(0xd);//ENTER
Serial.write(0xa);//NEW LINE
delay(500);
Serial.print("AT+CIPSERVER=1,23");//TEXT MODE
Serial.write(0xd);//ENTER
Serial.write(0xa);//NEW LINE
delay(500);
}