#include <NewPing.h>
#include <ESP8266WiFi.h>
#include <ThingSpeak.h>

#define TRIGGER_PIN 12
#define ECHO_PIN 13
#define MAX_DISTANCE 200

#define PIR_PIN 2

const char *ssid = "YourWiFiSSID";
const char *password = "YourWiFiPassword";
unsigned long myChannelNumber =2328603; // ThingSpeak Channel ID
const char *myWriteAPIKey = "70LWU9ERK15R43D4"; // ThingSpeak Write API Key

NewPing sonar(TRIGGER_PIN, ECHO_PIN, MAX_DISTANCE); // NewPing setup of pins and maximum distance.

WiFiClient client;

void setup() {
  Serial.begin(115200);

  pinMode(PIR_PIN, INPUT);

  WiFi.begin(ssid, password);

  ThingSpeak.begin(client);
}

void loop() {
  int pirStatus = digitalRead(PIR_PIN);
  long duration, distance;
  sonar.ping_timer();
  delay(50);
  if (pirStatus == HIGH) {
    Serial.println("Motion detected!");
    delay(5000); // Delay for 5 seconds
  } else {
    duration = sonar.ping_result / US_ROUNDTRIP_CM;
    distance = duration / 2;
    if (distance < 50) {
      Serial.print("Intruder Alert! Object detected at: ");
      Serial.print(distance);
      Serial.println(" cm");
      ThingSpeak.writeField(myChannelNumber, 1, distance, myWriteAPIKey);
      delay(5000); // Delay for 5 seconds
    }
  }
}