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![Nodemcu] INPUT_PULLUP on multiple GPIO - Project Guidance - Arduino Forum](https://europe1.discourse-cdn.com/arduino/original/4X/2/c/6/2c6e04553d621fde45c210caad7fb88892fd1ee1.png "Nodemcu] INPUT_PULLUP on multiple GPIO - Project Guidance - Arduino Forum")
Nodemcu] INPUT_PULLUP on multiple GPIO - Project Guidance - Arduino Forum
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GPIO pins of ESP8266 and How to use efficiently -IoTbyHVM
