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NodeMCU v2 and v2.1 high resolution pinout and specs – Renzo Mischianti
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ESP8266 D1 Mini V2 ESP-12F WiFi Module - ProtoSupplies
NodeMCU Amica V2 road test - Hackster.io
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New WeMos D1 R2 V2.1.0 WiFi Uno Based ESP8266 For Arduino Nodemcu Comp – Sunhokey Electronics Co., Ltd
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NODEMCU V2 LUA BASED ESP8266 DEVELOPMENT BOARD - Whadda
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