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Amazon.com: ideaspark 3pcs ESP8266 NodeMCU CH340 ESP-12E WiFi Wireless Internet Development Board Serial Module with Micro USB Cable Works Great for Arduino IDE : Electronics
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Wireless Module Ch340/cp2102/ch9102x Nodemcu V3 V2 V2.1 Lua Wifi Internet Of Things Development Board Based Esp8266 Esp-12e - Integrated Circuits - AliExpress
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ESP8266 Node MCU board specifications and pins descriptions. Frequently asked questions related to WI-FI board esp8266 node MCU
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