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87 lines
3.4 KiB
ReStructuredText
87 lines
3.4 KiB
ReStructuredText
Peacefair PZEM-004T Energy Monitor
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==================================
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.. seo::
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:description: Instructions for setting up PZEM-004 and PZEM-004T V1 power monitors.
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:image: pzem-004.jpg
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:keywords: PZEM-004T, PZEM-004
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.. note::
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This page is incomplete and could use some work. If you want to contribute, please read the
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:doc:`contributing guide </guides/contributing>`. This page is missing:
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- An image for the front page.
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- Images/screenshots/example configs of this device being used in action.
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The ``pzem004t`` sensor platform allows you to use PZEM-004 (version with 8-segment screens, `website <https://www.instructables.com/Power-Peacefair-PZEM-004-ESP8266-Arduino-Nano/>`__) and PZEM-004T V1 energy monitors
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(`website <https://innovatorsguru.com/ac-digital-multifunction-meter-using-pzem-004t/>`__) sensors with
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ESPHome.
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.. warning::
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This page refers to version V1 of the PZEM-004T, which has been out of stock for a while.
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The PZEM-004, however, is still working (and selling) with this protocol and does not use modbus.
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For using the newer V3 variant of this sensor please see :doc:`pzemac <pzemac>`.
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The communication with this integration is done over a :ref:`UART bus <uart>`.
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You must therefore have a ``uart:`` entry in your configuration with both the TX and RX pins set
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to some pins on your board and the baud rate set to 9600.
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.. code-block:: yaml
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# Example configuration entry
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uart:
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tx_pin: D1
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rx_pin: D2
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baud_rate: 9600
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sensor:
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- platform: pzem004t
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current:
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name: "PZEM-004T Current"
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voltage:
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name: "PZEM-004T Voltage"
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power:
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name: "PZEM-004T Power"
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energy:
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name: "PZEM-004T Energy"
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update_interval: 60s
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Configuration variables:
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------------------------
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- **current** (*Optional*): Use the current value of the sensor in amperes. All options from
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:ref:`Sensor <config-sensor>`.
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- **power** (*Optional*): Use the (active) power value of the sensor in watts. All options from
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:ref:`Sensor <config-sensor>`.
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- **voltage** (*Optional*): Use the voltage value of the sensor in volts.
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All options from :ref:`Sensor <config-sensor>`.
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- **update_interval** (*Optional*, :ref:`config-time`): The interval to check the
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sensor. Defaults to ``60s``.
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- **uart_id** (*Optional*, :ref:`config-id`): Manually specify the ID of the :ref:`UART Component <uart>` if you want
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to use multiple UART buses.
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Hardware considerations:
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------------------------
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These devices have optocouplers on the UART port and the resistors mounted on the board have been designed to work with 5V devices.
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ESPs need a `Level Shifter <https://www.adafruit.com/product/1875>`__ to be compatible with TTL levels.
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.. note::
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You need a IC level shifter and not a `Mosfet-based <https://www.sparkfun.com/products/12009>`__ level shifter, because you need
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to power the optocoupler's LEDs without an additional resistor in the path.
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If prefer, you could change the value of the optocoupler's resistors by following `this <https://gregwareblog.wordpress.com/2020/12/13/home-power-monitoring-pzem-004/>`__ or `this <https://www.instructables.com/Power-Peacefair-PZEM-004-ESP8266-Arduino-Nano/>`__ guide.
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Your ESP shall be powered by an external power supply and cannot be connected to the PZEM for power.
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See Also
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--------
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- :ref:`sensor-filters`
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- :doc:`pzemac`
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- :doc:`pzemdc`
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- :apiref:`pzem004t/pzem004t.h`
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- :ghedit:`Edit`
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