The ESP8266 is a low-cost Wi-Fi microchip, with a full TCP/IP stack and microcontroller capability, produced by Espressif Systems in Shanghai, China.

It has an L106 32 bit RISC microprocessor core based on the Tensilica Xtensa Diamond Standard 106Micro running at 80 MHz.
The module has 4 different memories:

  • 32 KiB instruction RAM
  • 32 KiB instruction cache RAM
  • 80 KiB user-data RAM
  • 16 KiB ETS system-data RAM

And the best of all is compatible with the Arduino IDE.


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