Getting started with NodeMCU.

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           NodeMCU   


NodeMCU is a low-cost open source IoT platform. It initially included firmware which runs on the ESP8266 Wi-Fi SoC from Espressif Systems,and hardware which was based on the ESP-12 module. Later, support for the ESP32 32-bit MCU was added.

PinOuts

I/O indexESP8266 pin
0 [*]GPIO16
1GPIO5
2GPIO4
3GPIO0
4GPIO2
5GPIO14
6GPIO12
7GPIO13
8GPIO15
9GPIO3
10GPIO1
11GPIO9
12GPIO10
 D0 (GPIO16) can only be used for GPIO read/write. It does not support open-drain/interrupt/PWM

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