we are going to make a ebb flow gardening system in which i am controlling the lighting system and i am using Microgreen salad Mix and Ruby stem Radish seeds so i need to make the changes in this code const int ledPin $=13$;

const int lightPin $=$ A$0$;

const int relayPin $=3$;

const int ledPin$2=12$;

void setup$()\{$

pinMode$($ledPin$,$ OUTPUT$)$;

pinMode$($lightPin$,$ INPUT$)$;

pinMode$($relayPin$,$ OUTPUT$)$;

pinMode$($ledPin$2,$ OUTPUT$)$;

Serial.begin$(9600)$;

$\}$

void loop$()\{$

int lightValue $=$ analogRead$($lightPin$)$;

Serial.println$($lightValue$)$;

$//$ Control the light relay based on time intervals

unsigned long currentTime $=$ millis$()$;

unsigned long elapsedTime $=$ currentTime $\%86400000$;

unsigned long elapsedTimeInHours $=($currentTime $/1000)/3600$;

if $($elapsedTime $<64800000)\{//$ Vegetative Stage: $18$ hours on$,6$ hours off

if $(($elapsedTimeInHours $/2)\%2==0)\{//$ If the current two$-$hour block is even

digitalWrite$($relayPin$,$ HIGH$)$; $//$ Turn on lights

analogWrite$($ledPin$,255)$; $//$ Full brightness

analogWrite$($ledPin$2,255)$; $//$ Turn on the new LED

$\}$ else $\{//$ If the current two$-$hour block is odd

digitalWrite$($relayPin$,$ LOW$)$; $//$ Turn off lights

analogWrite$($ledPin$,0)$; $//$ LED off

analogWrite$($ledPin$2,0)$; $//$ Turn off the new LED

$\}$

$\}$ else if $($elapsedTime $<86400000)\{//$ Flowering Stage: $12$ hours on$,12$ hours off

digitalWrite$($relayPin$,($elapsedTime $<10800000||$ elapsedTime $>=54000000)?$ HIGH : LOW$)$;

$\}$

delay$(1000)$;

$\}$ So i need like $12$ hours on lights for the seeds and $10$ hours off or you can change according to seeds

Apart from this i also need to build the circuit with the rasberry pi explain me step by step to build the circuit with reberry pi code to run the code for lighting system in ebb flow gardening system just for lighting system