mirror of
https://github.com/esphome/esphome-docs.git
synced 2024-12-26 17:27:47 +01:00
8d9b0d2375
* Netlify * Fix * Faster doxygen * Update Makefile * Try without api * Debug * Fix * Update Makefile * Debug * Try 1.8.13 * Remove debug * Update Makefile * Optimize
79 lines
2.9 KiB
ReStructuredText
79 lines
2.9 KiB
ReStructuredText
NodeMCU ESP8266
|
|
===============
|
|
|
|
.. seo::
|
|
:description: Instructions for using nodemcu ESP8266 boards in esphomelib together with a description of their pins and uses.
|
|
:image: nodemcu_esp8266.jpg
|
|
:keywords: NodeMCU, ESP8266
|
|
|
|
The NodeMCU board is fully supported by esphomeyaml. Simply select ``ESP8266`` when
|
|
the esphomeyaml wizard asks you for your platform and |nodemcuv2|_ as the board type.
|
|
|
|
.. note::
|
|
|
|
Most NodeMCU that can be purchased now are version 2 or upwards, if you're using an
|
|
original v1 board, set the board type to |nodemcu|_.
|
|
|
|
.. |nodemcuv2| replace:: ``nodemcuv2``
|
|
.. _nodemcuv2: http://docs.platformio.org/en/latest/platforms/espressif8266.html#nodemcu
|
|
.. |nodemcu| replace:: ``nodemcu``
|
|
.. _nodemcu: http://docs.platformio.org/en/latest/platforms/espressif8266.html#nodemcu
|
|
|
|
.. code-block:: yaml
|
|
|
|
# Example configuration entry
|
|
esphomeyaml:
|
|
name: livingroom
|
|
platform: ESP8266
|
|
board: nodemcuv2
|
|
|
|
The NodeMCU's pin numbering as seen on the board (the ``D0`` etc pins) is different from
|
|
the internal pin numbering. For example, the ``D8`` pin number maps to the internal
|
|
``GPIO0`` pin. Fortunately esphomeyaml knows the mapping from the on-board pin numbers
|
|
to the internal pin numbering, but you need to prefix the pin numbers with ``D`` as in below
|
|
image in order for this automatic mapping to occur.
|
|
|
|
In general, it is best to just use the ``D0``, ``D1``, ... pin numbering to avoid confusion
|
|
|
|
.. figure:: images/nodemcu_esp8266-full.jpg
|
|
:align: center
|
|
|
|
Pins on the NodeMCU ESP8266 development board.
|
|
|
|
Note that in certain conditions you *can* use the pins marked as ``INTERNAL`` in above image.
|
|
|
|
- ``D0`` also can be used to wake the device up from :doc:`deep sleep </components/deep_sleep>` if
|
|
the pin is connected to the ``RESET`` pin. ``D0`` is additionally connected to the LED
|
|
next to the UART chip, but in an inverted mode.
|
|
- ``D3``, ``D4`` and ``D8`` are used on startup to determine the boot mode, therefore these pins should
|
|
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 pin can be used to use an external power supply with the board. Supply a voltage from
|
|
3.3V to 12V to this pin and the linear voltage regulator on the board will power the board.
|
|
- ``ENABLE``/``RESET``: When these pins are triggered, the board resets. The difference between the pins
|
|
is how they can handle voltages above 3.3V
|
|
|
|
|
|
.. code-block:: yaml
|
|
|
|
# Example configuration entry
|
|
esphomeyaml:
|
|
name: livingroom
|
|
platform: ESP8266
|
|
board: nodemcuv2
|
|
|
|
binary_sensor:
|
|
- platform: gpio
|
|
name: "Pin D0"
|
|
pin: D0
|
|
|
|
See Also
|
|
--------
|
|
|
|
- :doc:`esp8266`
|
|
- :doc:`nodemcu_esp32`
|
|
- :ghedit:`Edit`
|
|
|
|
.. disqus::
|