Ultrasonic sensor with LED, how can I do this?

Projects Programming
16

Hello haroldsutton,
can you please help me integrate your code into mine?

I tried to implement it all day and I got all kind of errors since I'm not as experienced as you are.

This is my code for now:

#define echoPin 2
#define trigPin 3

long duration;
int distance;
int red_LED = 10;
int green_LED = 9;
int toggle = 0;
const int button = 8;
int buzzer = 4;

void setup() {
  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);
  pinMode(red_LED, OUTPUT);
  pinMode(green_LED, OUTPUT);
  pinMode(button, INPUT);
  pinMode(buzzer, OUTPUT);
  bool buttonPressed = false;
  analogWrite(red_LED, 255);
  Serial.begin(9600);
}
void loop() {
  //==============================================================
  // ULTRASONIC SENSOR
  //==============================================================
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);
  duration = pulseIn(echoPin, HIGH);
  distance = duration * 0.034 / 2;
  Serial.print("Distance: ");
  Serial.print(distance);
  Serial.print(" cm, ");

  //==============================================================
  // OCCUPANCY CODE
  //==============================================================
  if (distance <  10)  {
    analogWrite(red_LED, toggle * 255);
    if (toggle == 1) toggle = 0; else toggle = 1;
    analogWrite(green_LED, toggle * 255);
    delay (7000);
  }
  //==============================================================
  // BUTTON CODE
  //==============================================================
  bool buttonPressed = digitalRead(button);
  Serial.print ("Button Pressed = ");
  Serial.println(buttonPressed);

}

The sensor toggles the LED when I pass my hand over it, so it works fine, the push button is connected and it shows 1/0 when pressed, and the buzzer is connected and working, so everything works individually, but I don't know how to put them together, looks impossible to me since I got an error at almost every move I make.