![Node MCU pins layout [22] | Download Scientific Diagram](https://www.researchgate.net/publication/326115044/figure/fig1/AS:643930567753728@1530536419189/Node-MCU-pins-layout-22.png "Node MCU pins layout [22] | Download Scientific Diagram")
Node MCU pins layout [22] | Download Scientific Diagram
ESP8266 Pinout Reference: Which GPIO pins should you use? | Random Nerd Tutorials
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