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NodeMCU v3 VIN requires > 7V? : r/esp8266
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ESP8266 Node MCU 12-E not reconnecting to Arduino IoT Cloud after switching from micro USB power (via desktop USB port) to 5V via the VIN pin (AC adapter through MB V2). :
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![ESP8266 Pinout Overview [ESP-01, NodeMCU, WeMos D1 Mini]](https://diyi0t.com/wp-content/uploads/2019/06/NodeMCU_pinout.png "ESP8266 Pinout Overview [ESP-01, NodeMCU, WeMos D1 Mini]")
ESP8266 Pinout Overview [ESP-01, NodeMCU, WeMos D1 Mini]
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Help powering nodeMCU through VIN : r/esp8266
NodeMCU v3 VIN requires > 7V? : r/esp8266
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Nodemcu ESP8266 Pinout, Specs, Versions with detailed board layout
