Waveshare E-Paper Display ========================= .. seo:: :description: Instructions for setting up Waveshare E-Paper displays in ESPHome. :image: waveshare_epaper.jpg The ``waveshare_epaper`` display platform allows you to use some E-Paper displays sold by `Waveshare `__ with ESPHome. The 2.13" `TTGO module `__ with an ESP32 on the board is supported as well. Depending on your specific revision of the board you might need to try out the `-b73` or `-b1` version (see below). Similar modules sold by other vendors might also work but not have been tested yet. Currently only single-color E-Ink displays are implemented and of those only a few modules. .. figure:: images/waveshare_epaper-full.jpg :align: center :width: 75.0% Waveshare E-Paper 2.9 Inch E-Paper Display. The communication ESPHome has chosen to use for this integration is 4-wire :ref:`SPI `, as it's the most stable and high-speed. So you need to make sure your board is set to the 4-wire SPI mode and have an ``spi:`` section in your configuration. ==================== ===================== ===================== **E-Paper Pin** **ESP Pin** **ESPHome Option** -------------------- --------------------- --------------------- ``VCC`` ``3.3V`` N/A -------------------- --------------------- --------------------- ``GND`` ``GND`` N/A -------------------- --------------------- --------------------- ``CLK`` Any GPIO ``spi.clk_pin`` -------------------- --------------------- --------------------- ``DIN`` Any GPIO ``spi.mosi_pin`` -------------------- --------------------- --------------------- ``CS`` Any GPIO ``cs_pin`` -------------------- --------------------- --------------------- ``DC`` Any GPIO ``dc_pin`` -------------------- --------------------- --------------------- ``BUSY`` (Optional) Any GPIO ``busy_pin`` -------------------- --------------------- --------------------- ``RESET`` (Optional) Any GPIO ``reset_pin`` ==================== ===================== ===================== .. figure:: images/waveshare_epaper-pins.jpg :align: center :width: 60.0% .. code-block:: yaml # Example configuration entry spi: clk_pin: D0 mosi_pin: D1 display: - platform: waveshare_epaper cs_pin: D2 dc_pin: D3 busy_pin: D4 reset_pin: D5 model: 2.90in full_update_every: 30 lambda: |- it.print(0, 0, id(font), "Hello World!"); Configuration variables: ------------------------ - **cs_pin** (**Required**, :ref:`Pin Schema `): The CS pin. - **dc_pin** (**Required**, :ref:`Pin Schema `): The DC pin. - **model** (**Required**): The model of the E-Paper display. Options are: - ``1.54in`` - ``2.13in`` (not tested) - ``2.13in-ttgo`` (T5_V2.3 tested) - ``2.13in-ttgo-b73`` (T5_V2.3 with B73 display tested) - ``2.13in-ttgo-b1`` (T5_V2.3 with B1 display tested) - ``2.70in`` (currently not working with the HAT Rev 2.1 version) - ``2.90in`` - ``2.90inv2`` - ``2.90in-b`` (B/W rendering only) - ``4.20in`` - ``5.83in`` - ``7.50in`` - ``7.50inV2`` (Can't use with an ESP8266 as it runs out of RAM) - **busy_pin** (*Optional*, :ref:`Pin Schema `): The BUSY pin. Defaults to not connected. - **reset_pin** (*Optional*, :ref:`Pin Schema `): The RESET pin. Defaults to not connected. Make sure you pull this pin high (by connecting it to 3.3V with a resistor) if not connected to a GPIO pin. - **rotation** (*Optional*): Set the rotation of the display. Everything you draw in ``lambda:`` will be rotated by this option. One of ``0°`` (default), ``90°``, ``180°``, ``270°``. - **full_update_every** (*Optional*, int): E-Paper displays have two modes of switching to the next image: A partial update that only changes the pixels that have changed and a full update mode that first clears the entire display and then re-draws the image. The former is much quicker and nicer, but every so often a full update needs to happen because artifacts accumulate. On the ``1.54in``, ``2.13in``, ``2.90in``, and ``2.90inv2`` models you have the option to switch only do a full-redraw every x-th time using this option. Defaults to ``30`` on the described models and a full update for all other models. - **lambda** (*Optional*, :ref:`lambda `): The lambda to use for rendering the content on the display. See :ref:`display-engine` for more information. - **update_interval** (*Optional*, :ref:`config-time`): The interval to re-draw the screen. Defaults to ``10s``. - **pages** (*Optional*, list): Show pages instead of a single lambda. See :ref:`display-pages`. - **spi_id** (*Optional*, :ref:`config-id`): Manually specify the ID of the :ref:`SPI Component ` if you want to use multiple SPI buses. - **id** (*Optional*, :ref:`config-id`): Manually specify the ID used for code generation. See Also -------- - :doc:`index` - :apiref:`waveshare_epaper/waveshare_epaper.h` - `Arduino Waveshare E-Paper library `__ by `Yehui (@soonuse) `__ - :ghedit:`Edit`