esphome-docs/esphomeyaml/components/dallas.rst

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Dallas Temperature Component
============================
The ``dallas`` component allows you to use your
`DS18b20 <https://www.adafruit.com/product/374>`__
(`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
id, which you will later use to create the sensors. The 1-Wire bus the
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
massively long wires, work fine in most cases) between ``3.3V`` and the data pin.
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.. code:: yaml
# Example configuration entry
dallas:
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- pin: 23
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# Individual sensors
sensor:
- platform: dallas
address: 0x1c0000031edd2a28
name: "Livingroom Temperature"
Configuration variables:
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------------------------
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- **pin** (**Required**, number): The pin the sensor bus is connected to.
- **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.
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>`__