Read NodeMCU MAC address using Arduino IDE with esp8266 library

With esp8266 board installed to Arduino IDE, we can program NodeMCU using Arduino IDE directly.

Here is a example to read the MAC address of NodeMCU. Because we are going to read MAC only, so no need to begin WiFi and connect to any network actually.

NodeMCU_getMAC.ino

#include <ESP8266WiFi.h>

//const char* ssid = "ssid";
//const char* password = "password";
byte mac[6];

void setup() {
  Serial.begin(9600);
  //WiFi.begin(ssid, password);

  Serial.print("\nStart...\n");
  WiFi.macAddress(mac);
  Serial.print("MAC: ");
  Serial.print(mac[0],HEX);
  Serial.print(":");
  Serial.print(mac[1],HEX);
  Serial.print(":");
  Serial.print(mac[2],HEX);
  Serial.print(":");
  Serial.print(mac[3],HEX);
  Serial.print(":");
  Serial.print(mac[4],HEX);
  Serial.print(":");
  Serial.println(mac[5],HEX);
}

void loop() {
  // put your main code here, to run repeatedly:

}

Next:
- Get my IP address