58 lines
1.7 KiB
ReStructuredText
58 lines
1.7 KiB
ReStructuredText
MCP4725 Output
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==============
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.. seo::
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:description: Instructions for setting up MCP4725 outputs on the ESP.
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:image: mcp4725.png
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The MCP4725 output component allows to use `12bit external DAC
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<https://learn.sparkfun.com/tutorials/mcp4725-digital-to-analog-converter-hookup-guide/all>`__
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in order to have analog output(s) on any board by using I2C. Devices default address is ``0x60``
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and configurable alternative is ``0x61``.
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.. code-block:: yaml
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# Example configuration entry
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# Set a global i2c connection
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i2c:
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sda: 21
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scl: 22
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scan: True
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# Set the output with default (address: 0x60 / global i2c)
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output:
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- platform: mcp4725
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id: dac_output
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on_...:
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then:
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- output.set_level:
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id: dac_output
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level: 100%
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Configuration variables:
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------------------------
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- **id** (**Required**, :ref:`config-id`): The id to use for this output component.
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- **address** (*Optional*, int): Manually specify the I2C address of
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the DAC. Defaults to ``0x60``.
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- All other options from :ref:`Output <config-output>`.
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Usage with voltages higher than 3.3v
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------------------------------------
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In order to drive analog modules with voltages higher than 3.3v, use a `TTL bi-directionnal level
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converter <https://learn.sparkfun.com/tutorials/bi-directional-logic-level-converter-hookup-guide/all>`__
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Be careful about what converter you use, some of of them have channels labeled with `RX` and `TX`,
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in this case only `TX` channels are bi-directional (so you must use 2 `TX` channels for I2C to work).
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See Also
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--------
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- :doc:`/components/output/esp32_dac`
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- :doc:`/components/output/esp8266_pwm`
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- :ghedit:`Edit`
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