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ESP8266 module comparison: ESP-01, ESP-05, ESP-12, ESP-201, Test Board and NodeMCU - Squix - TechBlog
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Amazon.com: MakerFocus 2pcs ESP8266 NodeMCU LUA CP2102 ESP-12E Internet WiFi Development Board Serial Wireless Module Internet for Ar duino IDE/Micropython with Free Adapter Board for ESP8266 ESP-01 and nRF24L01+ : Electronics
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