The GPIO pins are 5V tolerant · Issue #61 · tttapa/ESP8266 · GitHub
3. PIN Options
Nodemcu ESP8266 Pinout, Specs, Versions with detailed board layout
![ESP8266 Pinout Overview [ESP-01, NodeMCU, WeMos D1 Mini]](https://diyi0t.com/wp-content/uploads/2019/06/NodeMCU_pinout.png "ESP8266 Pinout Overview [ESP-01, NodeMCU, WeMos D1 Mini]")
ESP8266 Pinout Overview [ESP-01, NodeMCU, WeMos D1 Mini]
Nodemcu ESP8266 Pinout, Features, and specifications
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The GPIO pins are 5V tolerant · Issue #61 · tttapa/ESP8266 · GitHub
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Nodemcu ESP8266 Pinout, Specs, Versions with detailed board layout
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![ESP8266 Pinout Overview [ESP-01, NodeMCU, WeMos D1 Mini]](https://diyi0t.com/wp-content/uploads/2019/06/ESP8266_Models-e1563302234865.png "ESP8266 Pinout Overview [ESP-01, NodeMCU, WeMos D1 Mini]")