What is meant by esp8266?
Thereof, what is the use of esp8266?
The ESP8266 WiFi Module is a self contained SOC with integrated TCP/IP protocol stack that can give any microcontroller access to your WiFi network. The ESP8266 is capable of either hosting an application or offloading all Wi-Fi networking functions from another application processor.
Also question is, what is the full form of esp8266?
WiFi SoC (System on Chip) ESP8266 is the most popular and low cost WiFi SoC with TCP/IP stack and a low power 32 bit microcontroller manufactured by Espressif, a Shanghai based Chinese manufacturer. As you might already know, nowadays IoT (Internet of Things) is an emerging field.
The 30 pin ESP32 can be reprogrammed and has both wifi and bluetooth. NodeMcu is software that comes installed in a ESP8266 nd uses the Lua programming language but the ESP8266 that comes with NodeMcu can be reprogrammed via the Arduino IDE.