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![NodeMCU ESP 12 and the pins configuration [26]. | Download Scientific Diagram](https://www.researchgate.net/publication/356769362/figure/fig3/AS:1098484388233216@1638910495257/NodeMCU-ESP-12-and-the-pins-configuration-26.jpg "NodeMCU ESP 12 and the pins configuration [26]. | Download Scientific Diagram")
NodeMCU ESP 12 and the pins configuration [26]. | Download Scientific Diagram
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![Pin diagram of NodeMCU ESP8266.[6] | Download Scientific Diagram](https://www.researchgate.net/publication/347689883/figure/fig3/AS:974724557463565@1609403852391/Pin-diagram-of-NodeMCU-ESP82666.png "Pin diagram of NodeMCU ESP8266.[6] | Download Scientific Diagram")