#include <WiFi.h>
#include <ThingSpeak.h>
char ssid[] = "Wokwi-GUEST";
char pass[] = "";
WiFiClient client;
long myChannelNumber = 2632283;
const char * myWriteAPIKey = "151EQ37XP26EUJDE";
int statusCode;
int distance;
void setup() {
  Serial.begin(115200);
  WiFi.mode(WIFI_STA);
  WiFi.begin(ssid, pass);
  Serial.print("Connecting to WiFi");
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("\nConnected to WiFi");
  ThingSpeak.begin(client);
  pinMode(2, OUTPUT);
  pinMode(4, INPUT);
  pinMode(27, OUTPUT);
}
void loop() {
  // Trigger the sensor
  digitalWrite(2, LOW);
  delayMicroseconds(2);
  digitalWrite(2, HIGH);
  delayMicroseconds(10);
  digitalWrite(2, LOW);
  distance = pulseIn(4, HIGH);
  int distanceCM = (distance * 0.0344) / 2;
  Serial.print("Distance: ");
  Serial.print(distanceCM);
  Serial.println(" cm");
  ThingSpeak.setField(1, distanceCM);
  statusCode = ThingSpeak.writeFields(myChannelNumber, myWriteAPIKey);

  if (statusCode == 200) {
    Serial.println("Channel update successful.");
  } else {
    Serial.print("Problem Writing data. HTTP error code: ");
    Serial.println(statusCode);
  }
  digitalWrite(27, HIGH);
  delay(100);
  digitalWrite(27, LOW);
  delay(1000);
}