This is a three part question but very related. I have the ESP8266 12e, I have performed the following connection (shown below), but on D0 (GPIO16), when I do this, the second blue light turns on, what is this light, is this a bad thing? [image] (Image credit from: ESP8266 NodeMCU Digital Inpu…

[image] wdaugherty: How do I connect buttons to the device with out resistors. The diagram that I saw said that I needed the resistor. 1. Every GPIO-pin (when configured as an input line) can be optionally connected with an internal pull-up resistor (Fig-1). In that case, there is no need to…

Arduino Buttons

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J-M-L September 30, 2021, 5:27pm 5

how to do what?

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Arduino Buttons

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