NodeMCU setup file for Over The Air (OTA) uploads.

OTAsetup.ino

// This is Basic OTA file
#include <ESP8266WiFi.h>
#include <ESP8266mDNS.h>
#include <WiFiUdp.h>
#include <ArduinoOTA.h>
// Replace with your network credentialsconst 
char* ssid = "YOUR_SSID";
const char* password = "YOUR_PASSWORD";
void setup() 
{ 
 Serial.begin(115200);
 Serial.println("Booting");
 WiFi.mode(WIFI_STA); WiFi.begin(ssid, password);
 while (WiFi.waitForConnectResult() != WL_CONNECTED)
 {
   Serial.println("Connection Failed! Rebooting…");
   delay(5000);
   ESP.restart();
 } 
 ArduinoOTA.onStart([]() { Serial.println("Start"); });
 ArduinoOTA.onEnd([]() { Serial.println("\nEnd"); });

  ArduinoOTA.onProgress([](unsigned int progress, unsigned int total) { 
Serial.printf("Progress: %u%%\r", (progress / (total / 100))); }); 
  ArduinoOTA.onError([](ota_error_t error) 
{ 
 Serial.printf("Error[%u]: ", error); 
if (error == OTA_AUTH_ERROR) 
 Serial.println("Auth Failed"); 
else if (error == OTA_BEGIN_ERROR) 
 Serial.println("Begin Failed"); 
else if (error == OTA_CONNECT_ERROR) 
 Serial.println("Connect Failed"); 
else if (error == OTA_RECEIVE_ERROR) 
 Serial.println("Receive Failed"); 
else if (error == OTA_END_ERROR)
 Serial.println("End Failed"); });
ArduinoOTA.begin(); 
Serial.println("Ready");
Serial.print("IP address: "); 
Serial.println(WiFi.localIP());
}

void loop() { 
  ArduinoOTA.handle();
}