Blink ESP8266 03 ESP 03 in Arduino IDE

Testing the ESP8266 03 have noticed differences with ESP version 01.

By default brings AT commands, using the example blink and modifying 02 to activate the GPIO output.

Connection to Program ESP

Should the GPIO 0 to GND to place the bootloader mode module, its programming is equal to ESP 01 only this one does not have RST and should have the GPIO 15 to GND


Connection GPIO 02



Video Test


Youtube Channel


1 Reply to “Blink ESP8266 03 ESP 03 in Arduino IDE”

Leave a Reply