195 lines
6.9 KiB
ReStructuredText
195 lines
6.9 KiB
ReStructuredText
AirTouch AT581x Radar
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=====================
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.. seo::
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:description: Instructions for setting up AirTouch AT581x Radar
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:image: at581x.png
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:keywords: radar
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The `AirTouch AT581x radar <https://en.airtouching.com/product/32.html>`__
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(aka ``AT581x``) is a familly of 5.8GHz radar which can be used for human presence detection. It can detect tiny movements
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and compared to a PIR sensor **it can detect presence continuously**. This can be useful, for example, to turn
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the lights on when you enter a room, keep them on as long as you are there (without waving your hands at the
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sensor) and turn them off almost immediately after you leave the room.
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They are ultra-low power (as low as 40µA of current consumption) and are extremely simple to use, yet can be setup by I2C.
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It's installed in many low cost appliance, like the ESP32S3-BOX-3, and can be found by many different manufacturer or reference,
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like the MoreSense MS58-3909S68U4.
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It is possible to use this sensor with only a single GPIO pin; however, if you wish to change its settings,
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a :doc:`/components/i2c` component (and its requisite GPIO pins) is required in your device's configuration.
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.. figure:: ../images/at581x.png
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:align: center
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:width: 75%
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AirTouch AT581x Radar / presence detection sensor
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.. code-block:: yaml
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# Example configuration entry
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at581x:
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id: "Radar"
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i2c_id: bus_a
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binary_sensor:
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- platform: gpio
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pin: GPIO21
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name: "Radar motion"
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switch:
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# Switch to turn on/off RF emission
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- platform: at581x
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at581x_id: "Radar"
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name: "Enable Radar"
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.. _at581x-component:
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Component/Hub
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-------------
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You need to have the hub component (``at581x:`` entry) defined to be able to change the sensor's
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settings, get it listed as an motion entity or being able to turn on/off the radio frequency emmission.
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A :doc:`/components/binary_sensor/gpio` alone could be sufficient if you only want
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to determine presence/occupancy. When you define ``at581x:`` you'll need to have a ``i2c:`` entry in
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your configuration with both the SDA and SCL pins defined.
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Multiple instances of this component may be defined if multiple :doc:`/components/i2c` components are available:
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.. code-block:: yaml
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at581x:
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- id: mmWave_1
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i2c_id: bus_a
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address: 0x28
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- id: mmWave_2
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i2c_id: bus_a
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address: 0x29
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...
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Configuration variables:
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************************
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- **id** (*Optional*, :ref:`config-id`): Manually specify the ID used for code generation. Necessary if you want
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to define multiple instances of this component.
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- **i2c_id** (*Optional*, :ref:`config-id`): Manually specify the ID of the :doc:`/components/i2c` if you want
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to use multiple I2C buses.
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.. _at581x-binary_sensor:
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Binary Sensor
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-------------
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The state of the radar detection is available via its GPIO pin. It's required to use a GPIO binary sensor to monitor the motion status
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.. code-block:: yaml
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binary_sensor:
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- platform: gpio
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name: "Human in front"
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pin: GPIO21
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Configuration variables:
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************************
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- Refer to other options from :ref:`Binary Sensor <config-binary_sensor>` and :doc:`GPIO Binary Sensor </components/binary_sensor/gpio>`.
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.. _at581x-switch:
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Switch
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------
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:ref:`Switch components <config-switch>` are used to enable/disable radio frequency hardware.
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.. code-block:: yaml
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switch:
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- platform: at581x
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at581x_id: Radar
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name: "Enable Radar"
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Configuration variables:
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************************
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- **at581x_id** (*Optional*, :ref:`config-id`): The ID of the AT581x component defined above.
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Required when multiple instances of the ``at581x`` component are defined.
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- All other options from :ref:`Switch <config-switch>`.
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.. _at581x-actions:
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Actions
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-------
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.. _at581x-action_settings:
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``at581x.settings`` Action
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**************************
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.. warning::
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The hardware frontend reset option is only required to reset the frontend in case it is struck, before sending the
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new configuration. However, a frontend reset is always performed after changing the settings.
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The radar has several settings which can be changed. These settings are not saved in non-volatile memory
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and need to be set on each boot.
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The settings action allows changing of any number of the radar's internal parameters/settings. With this
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action, any unspecified parameters will remain unchanged.
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.. code-block:: yaml
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on_...:
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- at581x.settings:
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id: "Waveradar"
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hw_frontend_reset: false
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frequency: 5800MHz
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sensing_distance: 200 # 0-1023
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poweron_selfcheck_time: 2000ms
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protect_time: 1s
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trigger_base: 500ms
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trigger_keep: 10s
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stage_gain: 3 # 0-12 the higher the value the smaller the gain
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power_consumption: 70µA
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Configuration variables:
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````````````````````````
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- **id** (*Optional*, :ref:`config-id`): Manually specify the ID of the sensor on which settings should be
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changed. If only one radar is defined, this is optional.
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- **hw_frontend_reset** (*Optional*, boolean): If set to true, a reset of the analog frontend will be performed before
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changing other options. Ignored if not set or set to ``false``. Upon applying the settings a frontend reset
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will be performed anyway, this is only useful if the sensor is not answering or locked up.
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- **frequency** (*Optional*, int): Any of the possible frequencies (5696, 5715, 5730, 5748, 5765, 5784, 5800, 5819, 5836, 5851, 5869, 5888) in MHz.
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- **sensing_distance** (*Optional*, int): A unitless number, in range 0-1023, specifying the maximum distance to detect motion
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- **poweron_selfcheck_time** (*Optional*, int): The delay to perform self check and calibration on power on. Recommanded not to change this
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- **protect_time** (*Optional*, int): The delay after an end-of-trigger event where the detection will not trigger anymore. Max 65535ms
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- **trigger_base** (*Optional*, int): The delay while a detection must be active to change the state of the sensor. Max 65535ms
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- **trigger_keep** (*Optional*, int): The delay that the output will stay high after a detection event. This is usually what you want to change.
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- **stage_gain** (*Optional*, int): The analog gain to use for threshold test. Any value in range 0-12, with 12 being the lowest gain and 0 the highest
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- **power_consumption** (*Optional*, int): Any of the possible power profile (48, 56, 63, 70, 77, 91, 105, 115, 40, 44, 47, 51, 54, 61, 68, 78) in µA
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``at581x.reset`` Action
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***********************
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Restart the sensor.
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.. code-block:: yaml
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on_...:
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at581x.reset:
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Configuration variables:
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````````````````````````
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- **id** (*Optional*, :ref:`config-id`): Manually specify the ID of the AT581x component. Useful when multiple instances of this component are defined.
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See Also
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--------
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- :ref:`I2C bus <i2c>`
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- :ref:`Binary Sensor <config-binary_sensor>`
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- :doc:`GPIO Binary Sensor </components/binary_sensor/gpio>`
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- :ref:`config-id`
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- :ghedit:`Edit`
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