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Amazon.com: NodeMCU ESP8266 Development Board with 0.96 Inch OLED Display, CH340 Driver, ESP-12E WiFi Wireless Module, and Micro USB Works Great for Arduino IDE/Micropython Programming (Pin Header Soldered) : Electronics
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Connecting NodeMCU v1.0 ESP-12E to LDC1614 through I2C protocol - Other Hardware Development - Arduino Forum
![Pin Definitions or layout of 1st generation ESP8266 NodeMCU development... | Download Scientific Diagram Pin Definitions or layout of 1st generation ESP8266 NodeMCU development... | Download Scientific Diagram](https://www.researchgate.net/publication/338571033/figure/fig2/AS:847138695159811@1578985012872/Pin-Definitions-or-layout-of-1st-generation-ESP8266-NodeMCU-development-board.jpg)