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Not every nodeMCU board supports 12V (#626)

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It could destroy the board if users just try and power it using 12V. There are boards that don't support 12V but only up to 5V.
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Stefan Lässer 2020-05-29 00:27:37 +02:00 committed by GitHub
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devices/nodemcu_esp8266.rst
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@ -49,8 +49,7 @@ Note that in certain conditions you *can* use the pins marked as ``INTERNAL`` in
not be pulled low on startup. You can, however, still use them as output pins.
- ``A0``: This pin can be used as a normal GPIO pin (like ``D1`` etc) but additionally can measure
voltages from 0 to 1.0V using the :doc:`/components/sensor/adc`.
- ``VIN``: This board can be powered by an external power supply by using this pin. Supply a voltage between
3.3V to 12V to this pin and the linear voltage regulator on the board will power the board.
- ``VIN``: This board can be powered by an external power supply by using this pin. Supply a voltage depends on the board you use. Some boards support up to 12V, some up to 5V.
- ``ENABLE``/``RESET``: When these pins are triggered, the board resets. The difference between the pins
is how they can handle voltages above 3.3V.