Test connectivity with 'AT' and 'AT+GMR' commands.
ARDUINO ESP8266 FIRMWARE UPDATE SERIAL
Open the Arduino IDE, select the correct COM port and open the serial monitor. Remove the jumper between GND and GPIO0 pin.Test connectivity and set default UART speedīefore proceeding it is better to verify that the new firmware is working fine. Now press the STOP button and close the flashing tool. Connect ESP's TXD pin to the TX pin of Arduino (pin 1).Connect ESP' RDX pin to the RX pin of Arduino (pin 0).By removing the microcontroller you can use the Arduino Uno onboard FTDI interface to directly communicate with the ESP module. Remove ATmega328P chip from the Arduino board.This will provide a solid foundation for powering the ESP module and setup the communication to the Arduino board.Įnsure you are able to issue simple AT commands to the ESP-01 board before proceeding. This procedure is based on my cheap Arduino WiFi shield with ESP-01įirst of all you have to build my cheap Arduino WiFi shield with ESP8266. A reliable connection between ESP-01 module and Arduino board.
ARDUINO ESP8266 FIRMWARE UPDATE PC
To set the correct baud rate use this command:
I suggest to set the ESP module to use 9600 or 19200 bps. If you are going to use the ESP-01 module with Arduino Uno you have to lower the default baud rate because the SoftwareSerial interface maximum speed is around 38400 bps. The correct settings for the ESP firmware v1.5 are: I have to admit that I had some bad experience when trying to flash new firmwares to my ESP-01 modules but today I have found an easy and reliable way to flash ESP8266 firmware v1.5 (AT v0.51) using my Arduino Uno board as an FTDI controller.