Serial 8Channel AC 230V SSR and Dimmer

OVERVIEW
SERIAL 8 CHANNEL AC 230V SSR AND DIMMER

The board can be  used in application where dimming of  110-220v AC power is required like dimming of bulb or fan.The board can be control with Serial data from any microcontroller 0-100% dimming or ON/OFF control Main power(230v) completely isolated from  microcontroller.



FEATURES

• Works on AC power supply 230V.
• Load Capacity 12 Amp AC(Up to 2000 Watt)
• Isolated from mains power
• Works from any microcontroller.
• Serial Control (TTL).
• Simultaneous 8 load control with 0-100% dimming.
• Act as 8 channel solid state relay with ON/OFF and  dimming.
• Optional input for Microcontroller or Bluetooth, XBEE, and USB inteface pin TX,RX,5V,GND.

BTA12400 IC

Electrical Characteristics

• Average Power Dissipation of 0.5W
• Operating Temperature +120 degC
• Holding Current  (maximum)-30mA
• Latching Current(maximum)-60mA 

MOC 3021

It is a 6pin Random Phase optoisolators TRIAC  driver output

TRIAC

from Triode for Alternating Current, is a genericized tradename for an electronic component that can conduct current in either direction when it is triggered (turned on), and is formally called a bidirectional triode thyristor or bilateral triode thyristor.

Applications:

• Solenoid/Valve Controls 
• Static ac Power Switch
• Lamp Ballasts
• Solid State Relays
• Interfacing Microprocessors to 115 Vac Peripherals 
• Incandescent Lamp Dimmer
• Motor Controls

Electrical Characteristics

• Total Power Dissipation @ TA  is  25°is 4.4mW
• Storage Temperature Range is -40 to +150 degC

FIRING ANGLE

Phase angle of applied voltage at which the Thyristor conduct

CONNECTING  230V AC 8 CHANNELDIMMER WITH ELECTRONIC GADGETS

UART INPUT FOR LOADS
A=load1    E=load5
B=load2     F=load6
C=load3 G=load7
D=load4 H=load8

S=ALLOFF(LOAD1=OFF,LOAD2=OFF,LOAD3=OFF,LOAD4=OFF,LOAD5=OFF LOAD6=OFF , LOAD7=OFF,  LOAD8=OFF )
N=ALL ON (LOAD1=100%, LOAD2=100%, LOAD3=100%, LOAD4=100%, LOAD5=100%, LOAD6=100%, LOAD7=100%, LOAD8=100%)

Example

A100= load1 at 100% dimmer level.
A026=load1 at 26% dimmer level.
B065=load2 at 65% dimmer level.
C089=load3 at 89% dimmer level.

LOAD1

LOAD2

LOAD3

All ON and All OFF

BLOCK DIAGRAM

CONNECTION WITH ARDUINO BOARD

• Connect TX of Arduino to RX of Dimmer
• Connect RX of Arduino to TX of Dimmer

ARDUINO CODE

int s1=8;                  //connect switch1 to pin 2 of arduino

int s2=9;                  //connect switch2 to pin 3 of arduino

int s3=10;                  //connect switch3 to pin 4 of arduino

int s4=11;                 //connect switch4 to pin 5 of arduino

int s5=12;                 //connect switch5 to pin 6 of arduino 

int s6=13;

void setup()

{

  Serial.begin(9600);      // initialize the serial communications

  pinMode(s1,INPUT);

  pinMode(s2,INPUT);

  pinMode(s3,INPUT);

  pinMode(s4,INPUT);

  pinMode(s5,INPUT);

  pinMode(s6,INPUT);

}

void loop()

{

  unsigned char LOAD1=0,LOAD2=0,LOAD3=0; 

   if(s1==LOW)     

   {

     if(LOAD1<100)

     LOAD1++;

     Serial.write('A');

     CONVERT_DISPLAY(LOAD1);  

     delay(500);   

     }

    

    if(s2==LOW)      

     {

  if(LOAD1>0)

        LOAD1--;

Serial.write('A');

CONVERT_DISPLAY(LOAD1);  

delay(500);   

      }

   

   if(s3==LOW)     

   {

     if(LOAD2<100)

     LOAD2++;

     Serial.write('B');

     CONVERT_DISPLAY(LOAD2);  

     delay(500);   

     }

     

     if(s4==LOW)      

     {

       if(LOAD2>0)

        LOAD2--;

Serial.write('B');

CONVERT_DISPLAY(LOAD2);  

delay(500);   

      }

  

  if(s5==LOW)     

   {

     if(LOAD3<100)

     LOAD3++;

     Serial.write('C');

     CONVERT_DISPLAY(LOAD3);  

     delay(500);   

     }

    

     if(s6==LOW)

{

       if(LOAD3>0)

        LOAD3--;

Serial.write('C');

CONVERT_DISPLAY(LOAD3);  

delay(500);   

      }

}

  

  

void CONVERT_DISPLAY(unsigned int d)

{

   unsigned char dig1,dig2,dig3,dig[3];

   unsigned char x;

   unsigned char temp;

   temp=d;

   temp=temp/10;

   dig1=d%10;

   dig2=temp%10;

   dig3=temp/10;

        

        dig[0]=dig3;

dig[1]=dig2;

dig[2]=dig1;

for(x=0;x<3;x++)

{

           temp=dig[x]|0x30;

           Serial.write(temp);

    }

}  

NOTE: Since this module working with live 230V AC, while experimenting user has to take proper safety precautions.