#include <SoftwareSerial.h>

SoftwareSerial btSerial(4, 3); //RX, TX

int RLED = 8;
int BELT = 7;
int GLED = 6;
int PR_IN = A1;
int sensorValue;

void setup()
{
pinMode(RLED = 8, OUTPUT);

Serial.begin(9600);
btSerial.begin(9600);
pinMode(BELT, INPUT);
pinMode(GLED, OUTPUT);

}

void loop()

{
char Ps = LOW, Bl = LOW;
sensorValue = analogRead(PR_IN);
if (sensorValue < 450) Ps = HIGH;
if (digitalRead(BELT) == LOW)Bl = HIGH;

if (Bl == LOW && Ps == LOW)
{
digitalWrite(GLED, LOW);
digitalWrite(RLED, LOW);
}
if (Bl == HIGH && Ps == LOW) {
digitalWrite(GLED, LOW);
digitalWrite(RLED, LOW);
}
if (Bl == LOW && Ps == HIGH) {
digitalWrite(GLED, LOW);
digitalWrite(RLED, HIGH);
}
if (Bl == HIGH && Ps == HIGH) {

digitalWrite(GLED, HIGH);
digitalWrite(RLED, LOW);
}
if (Serial.available()) {
}
int RLED = digitalRead(8);
if (RLED == 1) {
btSerial.print("1");
}
int GLED = digitalRead(6);
if (GLED == 1) {
btSerial.print("2");
}

}