NodeMCU V3

https://nodemcu.readthedocs.io/en/release/

firmwares

• NodeMCU Lua firmware - which allows programming with the Lua scripting language and supports standard AT commands https://github.com/nodemcu/nodemcu-firmware
• MicroPython
• Arduino IDE sketches

Steps to Restore the Default Firmware

• Download the Firmware: Get the latest pre-built .bin files from the NodeMCU GitHub Releases page. https://github.com/nodemcu/nodemcu-firmware/releases Choose the integer or float version depending on your needs.

• Install Drivers: Ensure your NodeMCU V3 is connected to your PC and the CH340 driver is installed (this driver is specific to the V3 board).

• Flash the Chip: Use tools like the NodeMCU Flasher GitHub Repository to upload the binary. https://github.com/nodemcu/nodemcu-flasher Connect the board, set the correct COM port, assign the .bin file to address 0x00000, and flash. Ensure the board is in flash mode by holding the FLASH button while plugging it in or resetting.

Get Started With ESP8266 Using AT Commands, NodeMCU, or Arduino (ESP-12E)

https://www.instructables.com/Get-Started-with-ESP8266-Using-AT-Commands-NodeMCU/ https://www.switchdoc.com/2015/11/iot-esp8266-tutorial-at-command-set-firmware/ https://www.teachmemicro.com/arduino-wifi-using-esp8266-commands/

NodeMCU Lua

https://habr.com/ru/articles/566756/

esp 12e disassemble

25Q80ASSIG - 8 Megabit Serial Flash Memory esp8266ex - a highly integrated Wi-Fi SoC (System-on-a-Chip) developed by Espressif Systems. It features a 32-bit Tensilica L106 RISC processor running at 80-160 MHz, built-in 802.11 b/g/n Wi-Fi, and extensive GPIOs.