![\"Get](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2020\/01\/How-to-get-ESP32-ESP8266-Physical-MAC-Address-Arduino-IDE.jpg?resize=1200%2C675&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\nWhat’s a MAC Address?<\/h2>\n\n\n\n
MAC Address stands for M<\/strong>edia A<\/strong>ccess C<\/strong>ontrol Address and it is a hardware unique identifier that identifies each device on a network.<\/p>\n\n\n\n MAC Addresses are made up of six groups of two hexadecimal digits, separated by colons, for example: 30:AE:A4:07:0D:64<\/span>. <\/p>\n\n\n\n MAC Addresses are assigned by manufacturers, but you can also give a custom MAC Address to your board. However, every time the board resets, it will return to its original MAC Address. So, you need to include the code to set a custom MAC Address in every sketch.<\/p>\n\n\n\n Table of Contents<\/strong><\/p>\n\n\n\n To get your ESP32 board MAC Address, upload the following code.<\/p>\n\n\n View raw code<\/a><\/p>\n\n\n\n After uploading the code, open the Serial Monitor at a baud rate of 115200. Press the on-board RESET or EN button.<\/p>\n\n\n\n The MAC Address should be printed in the Serial Monitor as shown in the following figure.<\/p>\n\n\n That’s it! Now, you know how to get your ESP32 MAC Address.<\/p>\n\n\n\n In some applications, it might be useful to give your boards a custom MAC Address. However, as explained previously, this doesn’t overwrite the MAC Address set by the manufacturer<\/strong>. So, every time you reset the board, or upload a new code, it will get back to its default MAC Address.<\/p>\n\n\n\n The following code sets a custom MAC Address for the ESP32 board.<\/p>\n\n\n View raw code<\/a><\/p>\n\n\n\n You can set a custom MAC Address in the following line:<\/p>\n\n\n\n Attention:<\/strong> the bit 0 of the first byte of MAC address can not be 1. For example, the MAC address can set to be “1a:XX:XX:XX:XX:XX”, but can not be “15:XX:XX:XX:XX:XX”.<\/p>\n\n\n\n After uploading the code, open the Serial Monitor at a baud rate of 115200. Restart the ESP32 and you should get its default and new MAC Address.<\/p>\n\n\n To get your ESP8266 board Mac Address, use the following code.<\/p>\n\n\n View raw code<\/a><\/p>\n\n\n\n After uploading the code, open the Serial Monitor at a baud rate of 115200. Press the on-board RESET or EN button. The MAC Address should be printed in the Serial Monitor.<\/p>\n\n\n The following code sets a custom MAC Address for the ESP8266 board. <\/p>\n\n\n View raw code<\/a><\/p>\n\n\n\n Set your custom MAC Address on the following line:<\/p>\n\n\n\n After uploading the code, open the Serial Monitor at a baud rate of 115200. Restart the ESP8266 and you should get its default and new MAC Address.<\/p>\n\n\n In this quick guide, we’ve shown you how to get your ESP32 and ESP8266 manufacturer MAC Address with Arduino IDE. You’ve also learned how to set a custom MAC Address for your boards.<\/p>\n\n\n\n Learn more about the ESP32 and ESP8266 boards:<\/p>\n\n\n\n Thanks for reading. <\/p>\n","protected":false},"excerpt":{"rendered":" This guide shows how to get the ESP32 or ESP8266 NodeMCU boards MAC Address using Arduino IDE. We also show how to change your board’s MAC Address. What’s a MAC … <\/p>\n\n
Get ESP32 MAC Address<\/h2>\n\n\n\n
\/*\n Rui Santos & Sara Santos - Random Nerd Tutorials\n Complete project details at https:\/\/RandomNerdTutorials.com\/get-change-esp32-esp8266-mac-address-arduino\/\n Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files. \n The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.\n*\/\n#include <WiFi.h>\n#include <esp_wifi.h>\n\nvoid readMacAddress(){\n uint8_t baseMac[6];\n esp_err_t ret = esp_wifi_get_mac(WIFI_IF_STA, baseMac);\n if (ret == ESP_OK) {\n Serial.printf("%02x:%02x:%02x:%02x:%02x:%02x\\n",\n baseMac[0], baseMac[1], baseMac[2],\n baseMac[3], baseMac[4], baseMac[5]);\n } else {\n Serial.println("Failed to read MAC address");\n }\n}\n\nvoid setup(){\n Serial.begin(115200);\n\n WiFi.mode(WIFI_STA);\n WiFi.STA.begin();\n\n Serial.print("[DEFAULT] ESP32 Board MAC Address: ");\n readMacAddress();\n}\n \nvoid loop(){\n\n}\n<\/code><\/pre>\n\tDemonstration<\/h3>\n\n\n\n
![\"Get](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2020\/01\/ESP32-Read-Default-MAC-Address-Arduino-IDE.png?resize=707%2C266&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\nSet a Custom MAC Address for the ESP32<\/h2>\n\n\n\n
Change ESP32 MAC Address (Arduino IDE)<\/h3>\n\n\n\n
\/*\n Rui Santos & Sara Santos - Random Nerd Tutorials\n Complete project details at https:\/\/RandomNerdTutorials.com\/get-change-esp32-esp8266-mac-address-arduino\/\n Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files. \n The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.\n*\/\n#include <WiFi.h>\n#include <esp_wifi.h>\n\n\/\/ Set your new MAC Address\nuint8_t newMACAddress[] = {0x32, 0xAE, 0xA4, 0x07, 0x0D, 0x66};\n\n\/\/ Replace with your network credentials\nconst char* ssid = "REPLACE_WITH_YOUR_SSID";\nconst char* password = "REPLACE_WITH_YOUR_PASSWORD";\n\nvoid readMacAddress(){\n uint8_t baseMac[6];\n esp_err_t ret = esp_wifi_get_mac(WIFI_IF_STA, baseMac);\n if (ret == ESP_OK) {\n Serial.printf("%02x:%02x:%02x:%02x:%02x:%02x\\n",\n baseMac[0], baseMac[1], baseMac[2],\n baseMac[3], baseMac[4], baseMac[5]);\n } else {\n Serial.println("Failed to read MAC address");\n }\n}\n\nvoid setup(){\n Serial.begin(115200);\n Serial.println();\n \n WiFi.mode(WIFI_STA);\n WiFi.STA.begin();\n \n Serial.print("[DEFAULT] ESP32 Board MAC Address: ");\n readMacAddress();\n\n \/\/ Change ESP32 Mac Address\n esp_err_t err = esp_wifi_set_mac(WIFI_IF_STA, &newMACAddress[0]);\n if (err == ESP_OK) {\n Serial.println("Success changing Mac Address");\n }\n\n \/\/ Read the new MAC address\n Serial.print("[NEW] ESP32 Board MAC Address: ");\n readMacAddress();\n\n \/\/ Connect to Wi-Fi\n WiFi.begin(ssid, password);\n Serial.println("Connecting to WiFi...");\n while (WiFi.status() != WL_CONNECTED) {\n Serial.print(".");\n delay(1000);\n }\n Serial.println("Connected");\n}\n \nvoid loop(){\n\n}\n<\/code><\/pre>\n\tuint8_t newMACAddress[] = {0x32, 0xAE, 0xA4, 0x07, 0x0D, 0x66};<\/code><\/pre>\n\n\n\n![\"Change](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2020\/01\/ESP32-Change-MAC-Address-Arduino-IDE.png?resize=936%2C373&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\n
\n\n\n\nGet ESP8266 NodeMCU MAC Address<\/h2>\n\n\n\n
\/*\n Rui Santos & Sara Santos - Random Nerd Tutorials\n Complete project details at https:\/\/RandomNerdTutorials.com\/get-change-esp32-esp8266-mac-address-arduino\/\n Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files. \n The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.\n*\/\n#include <ESP8266WiFi.h>\n\nvoid setup(){\n Serial.begin(115200);\n Serial.println();\n Serial.print("ESP Board MAC Address: ");\n Serial.println(WiFi.macAddress());\n}\n \nvoid loop(){\n\n}\n<\/code><\/pre>\n\tDemonstration<\/h3>\n\n\n\n
![\"ESP8266](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2024\/06\/ESP8266-Read-Default-MAC-Address-Arduino-IDE.png?resize=739%2C252&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\nChange the ESP8266 NodeMCU MAC Address (Arduino IDE)<\/h2>\n\n\n\n
\/\/ Complete Instructions: https:\/\/RandomNerdTutorials.com\/get-change-esp32-esp8266-mac-address-arduino\/\n\n#include <ESP8266WiFi.h>\n\n\/\/ Set your new MAC Address\nuint8_t newMACAddress[] = {0x32, 0xAE, 0xA4, 0x07, 0x0D, 0x66};\n\nvoid setup(){\n Serial.begin(115200);\n Serial.println();\n \n WiFi.mode(WIFI_STA);\n \n Serial.print("[OLD] ESP8266 Board MAC Address: ");\n Serial.println(WiFi.macAddress());\n\n \/\/ For Soft Access Point (AP) Mode\n \/\/wifi_set_macaddr(SOFTAP_IF, &newMACAddress[0]);\n \/\/ For Station Mode\n wifi_set_macaddr(STATION_IF, &newMACAddress[0]);\n \n Serial.print("[NEW] ESP8266 Board MAC Address: ");\n Serial.println(WiFi.macAddress());\n}\n \nvoid loop(){\n\n}\n<\/code><\/pre>\n\tuint8_t newMACAddress[] = {0x32, 0xAE, 0xA4, 0x07, 0x0D, 0x66};<\/code><\/pre>\n\n\n\n![\"Change](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2020\/01\/ESP8266-Change-MAC-Address-Arduino-IDE.png?resize=739%2C250&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\nWrapping Up<\/h2>\n\n\n\n
\n