How to program ESP8266 ESP 12E NodeMCU using Arduino IDE

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We will be connecting external LED directly to D0 pin of NodeMCU (no need of external current limiting resistor). If you do not have external LED, it can be skipped because there already one onboard (blue) LED at this pin. I have connected external red LED just as fun

or it can be found on following link-

Arduino logo and NodeMCU logo are their respective trademarks- logos shown in thumbnail taken from -

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