SMD LEDs + sensors

Other Hardware LEDs and Multiplexing
1

Hi guys, so in this project I have 2 PIR motion sensors (A2,A4 pins), one photo resistor (A0 pin) and 8 smd LEDs (D4-D11). Logic is next:
If no light = true,
if there is motion on PIR1 or PIR2 =true
turn LEDs ON

My main problem is with PIR sensors, they are turning on without motion. I don't know why, and need your help. This code is working fine without functions for turning on SMD LEDs. But..when I'm implementing this functions code is going crazy.
I did testing without LEDs, and everything is working perfect..

#define PIR1 A4
#define PIR2 A2
#define photoR A0
int i, val1 = 0, val2 = 0, brojac;


void setup() {
 for (i = 4; i <= 11; i++) {
   pinMode(i, OUTPUT);
 }
 pinMode(photoR, INPUT);
 Serial.begin(9600);
}


void paljenjeSvijetlaGore() {
 for (brojac = 4; brojac <= 11; brojac++) {
   digitalWrite(brojac, HIGH);
   delay(250);
 }
 delay(5000);
 for (brojac = 4; brojac <= 11; brojac++) {
   digitalWrite(brojac, LOW);
   delay(250);
 }
}

void paljenjeSvijetlaDolje() {
 for (brojac = 11; brojac >= 4; brojac--) {
   digitalWrite(brojac, HIGH);
   delay(250);
 }
 delay(5000);
 for (brojac = 11; brojac >= 4; brojac--) {
   digitalWrite(brojac, LOW);
   delay(250);
 }

}



void loop() {

 val1 = analogRead(PIR1);
 val2 = analogRead(PIR2);

 if (analogRead(photoR) > 800) {
   Serial.println("Uso je u petlju FOTO");

   if (val1 > 0) {
       paljenjeSvijetlaGore();
       delay(1500);
   } else if (val2 > 0) {
       paljenjeSvijetlaDolje();
       delay(1500);
     }

     val1 = LOW;
     val2 = LOW;
     delay(400);
   }
 }