The ESP8266 is a CH340 NodeMCU V3 WIFI Development Board made by Espressif Systems, supplied in a QFN-32 package. The full ESP8266 datasheet PDF can be previewed below or downloaded.
The All-new NodeMcu V3 Lua CH340 Wifi Dev. Board is a fast-leading edge low-cost WiFi technology. NodeMcu V3 Is Modern high-level mature LUA-based technology. It is an integrated unit with all available resources on board. It is super simple to complement your existing Arduino projects or any development board that has I/O pins available.
Modern Internet development tools such as Node.js can take advantage of the NodeMCU with the built-in API to put your idea on the fast track immediately. NodeMCU is built based on the mature ESP8266 technology to take advantage of the abundant resources available on the web.
NodeMCU has ESP-12-based serial WiFi integrated onboard to provide GPIO, PWM, ADC, I2C, and 1-WIRE resources at your fingertips, built-in USB-TTL serial with super reliable industrial strength CH340 for superior stability on all supported platforms. This module is one of the cheapest available wifi-modules in the market. V3 or Version3 is the latest version of this module.
The NodeMcu is an open-source firmware and development kit that helps you to prototype your IoT product with a few Lua script lines. The Development Kit is based on the esp12x series, integrated GPIO, PWM, IIC, 1- Wire, and ADC all in one board.
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