SSR flickering problem

hello,

i trying run below code ac circuit using ssr ac powered halogen light bulbs flickers.  

some people in forums special arduino code or  555 timer or 741 coupler need used 0 crossing voltage...

please advise how solve problem.

thank you.


parts available in attached photo;


moc3020 (according play ground tutorial)
h11aa1m (according play ground tutorial)
ssr ald112
ssr xssr da240201
ssr 25 da
lots of mosfets, resistors etc..

code: [select]

const int led = 9; // pin led attached to
const int sensor1 = a1;
const int sensor2 = a2;
int brightness = 250; // how bright led is
int lightgoal = 0;
int maxbrightness =252;
const int upfadeamount = 5; // how many points fade led by
const int dnfadeamount = 3; // how many points fade led by
int timer = 1000;
// setup routine runs once when press reset:
void setup() {
 // declare pin 9 output:
 pinmode(led, output);
 pinmode(sensor1, input); // declare sensorpins inputs
 pinmode(sensor2, input);
}
// loop routine runs on , on again forever:
void loop() {
 if (digitalread(sensor1) == high || digitalread(sensor2) == high) { // detect if either sensor triggered
   timer = 15; // every increment adds tenth of second
   lightgoal = maxbrightness; // set lights turn on
   //if (brightness == 0){ brightness = 1;}
 }
 /// light brightness / fading section
 if(brightness == lightgoal){ // brightness want it?
   if (timer == 0){
     lightgoal = 0;
   }
   delay(100); // finctioning delay in timer, not percise
   timer = timer - 1; //countdown timer every loop
 }
 else{
   if(brightness < lightgoal){ // brightness low?
     // raise brightness
     brightness = brightness + upfadeamount;
   }
   else { // if light isn't low, it's high
     // lower brightness
     brightness = brightness - dnfadeamount;
   }
   // set brightness (pwm duty cycle) of led
   analogwrite(led, brightness);
   // wait 30 milliseconds see dimming effect
   delay(25);
 }
}


1) pictures way big.
2) can post schematic?
3) analogwrite(led, brightness) - can not apply pwm ssr not work. because once triggered ssr stay on until next half cycle. result beat , yes cause flickering.
4) why delay(100) ?

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