NodeMcu WIFI Board Based on ESP8266 CH340 Module Description NodeMCU It is a board similar to Arduino, the difference is

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ESP-12S module with ESP8266 Wi-Fi core ESP-12S Wi-Fi module is developed by Ai-thinker Team. Specifications WiFi module with serial output

ESP-12E module with ESP8266 Wi-Fi core Description ESP-12E Wi-Fi module is developed by Ai-thinker Team. core processor ESP8266 in smaller