#include <ESP32Ping.h>
#define INTERVAL 50000

unsigned long lastExecutedMillis = 0;

const IPAddress remote_ip(142,251,128,46);

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

void loop() {
  unsigned long currentMillis = millis();
  if (currentMillis - lastExecutedMillis >= INTERVAL) {  
    lastExecutedMillis = currentMillis;
    if ((Ping.ping(remote_ip)) {
      Serial.println("I am Alive");
    }
    else {
      Serial.println("I am Dead");
      Serial.println("I will reboot...");
      ESP.restart();
    }
  }
  lastExecutedMillis = currentMillis;
}