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10
components/sensor/max31856.rst
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@ -7,7 +7,6 @@ MAX31856 Thermocouple Temperature Sensor
The ``MAX31856`` temperature sensor allows you to use your MAX31856 Thermocouple
temperature sensor (`datasheet <https://datasheets.maximintegrated.com/en/ds/MAX31856.pdf>`__) with ESPHome.
Although the chip supports multiple thermocouple types, this component only implements the ``K`` type.
.. figure:: images/max31856-full.jpg
:align: center
@ -28,7 +27,7 @@ to have an :ref:`spi bus <spi>` in your configuration with both **miso_pin** and
- ``SDI`` connects to the SPI **mosi_pin**
- ``CS`` connects to a free GPIO pin
- ``FLT`` not used by ESPHome
- ``DRDY`` not used by ESPHome
- ``DRDY`` connects to a free GPIO pin (*Optional*)
.. code:: yaml
@ -49,10 +48,15 @@ Configuration variables:
- **name** (**Required**, string): The name for the temperature sensor.
- **cs_pin** (**Required**, :ref:`Pin Schema <config-pin_schema>`): The Chip Select pin of the SPI interface.
- **update_interval** (*Optional*, :ref:`config-time`): The interval to check the sensor. Defaults to ``60s``.
- **data_ready_pin** (*Optional*, :ref:`Pin Schema <config-pin_schema>`): The Data Ready pin of the MAX31856. If this pin is configured, the MAX31856 will use autoconversion mode and ``update_interval`` cannot be configured and will not be used.
- **update_interval** (*Optional*, :ref:`config-time`): The interval to check the sensor. Defaults to ``60s``. Only one of ``data_ready_pin`` and ``update_interval`` may be set in the configuration.
- **type** (*Optional*, string): The thermocouple type. One of the following values: ``B``, ``E``, ``J``, ``K``, ``N``, ``R``, ``S``, ``T``. Defaults to ``K``.
- **mains_filter** (*Optional*, string): The mains power frequency to reject (``50 Hz`` or ``60 Hz``). Defaults to ``60 Hz``.
- **samples_per_value** (*Optional*, int): The number of samples to average for each conversion. One of the following values: ``1``, ``2``, ``4``, ``8``, ``16``. Defaults to ``1``.
- **spi_id** (*Optional*, :ref:`config-id`): Manually specify the ID of the :ref:`SPI Component <spi>` if you want to use multiple SPI buses.
- **id** (*Optional*, :ref:`config-id`): Manually specify the ID used for code generation.
- **has_fault** (*Optional*): If true the sensor has a fault. The fault condition can be obtained by viewing the logs.
All options from :ref:`Binary Sensor <config-binary_sensor>`.
- All other options from :ref:`Sensor <config-sensor>`.
See Also