49 lines
1.9 KiB
ReStructuredText
49 lines
1.9 KiB
ReStructuredText
Dallas Temperature Component
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============================
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.. seo::
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:description: Instructions for setting up dallas temperature sensor hubs that can expose many temperature sensors on a single pin using the one wire protocol.
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:image: dallas.jpg
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:keywords: Dallas, ds18b20, onewire
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The ``dallas`` component allows you to use your
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`DS18b20 <https://www.adafruit.com/product/374>`__
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(`datasheet <https://datasheets.maximintegrated.com/en/ds/DS18B20.pdf>`__)
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and similar One-Wire temperature sensors.
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To use your dallas sensor, first define a dallas “hub” with a pin and
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id, which you will later use to create the sensors. The 1-Wire bus the
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sensors are connected to should have an external pullup resistor of
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about 4.7KΩ. For this, connect a resistor of *about* 4.7KΩ (values around that like 1Ω will, if you don't have
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massively long wires, work fine in most cases) between ``3.3V`` and the data pin.
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.. code:: yaml
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# Example configuration entry
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dallas:
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- pin: 23
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# Individual sensors
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sensor:
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- platform: dallas
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address: 0x1c0000031edd2a28
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name: "Livingroom Temperature"
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Configuration variables:
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------------------------
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- **pin** (**Required**, number): The pin the sensor bus is connected to.
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- **update_interval** (*Optional*, :ref:`config-time`): The interval that the sensors should be checked.
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Defaults to 15 seconds. See :ref:`sensor-default_filter`.
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- **id** (*Optional*, :ref:`config-id`): Manually specify the ID used for code generation.
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See Also
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--------
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- :doc:`sensor/dallas`
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- `Arduino DallasTemperature library <https://github.com/milesburton/Arduino-Temperature-Control-Library>`__ by `Miles Burton <https://github.com/milesburton>`__
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- :doc:`API Reference </api/sensor/dallas>`
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- `Edit this page on GitHub <https://github.com/OttoWinter/esphomedocs/blob/current/esphomeyaml/components/dallas.rst>`__
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.. disqus::
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