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111 lines
3.0 KiB
ReStructuredText
111 lines
3.0 KiB
ReStructuredText
.. include:: ../Plugin/_plugin_substitutions_p03x.repl
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.. _P030_BMP280_page:
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BMP280
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======
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|P030_typename|
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|P030_status|
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.. image:: P030_BMP280_1.jpg
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Introduction
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------------
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Specifications:
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* Temperature (-40C to +85C)
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* Barometric pressure (300-1100 hPa)
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.. warning:: The BMP280 is easily mistaken for its big brother the BM**E**280. The :ref:`P028_page` can also be used
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to control the BMP280.
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Wiring
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------
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.. code-block:: html
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ESP BMP280
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GPIO (4) <--> SDI (SDA)
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GPIO (5) <--> SCK (SCL)
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Power
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3.3V <--> VIN
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GND <--> GND
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.. note:: If you have change the I2C settings in the hardware setup you need to connect to those instead of GPIO 4 and 5.
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.. note:: Only use 3.3V BMP280 boards. The ESP pins are not 5V tolerant. Depending on the make of the BMP280 board,
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pull-up resistors on SDA and SDC may be absent. 4k7 types are fine. When more I2C devices are being used, only one set
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of pull-up resistors is required or even allowed. It may be necessary to add a ceramic 100nF capacitor across the power
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lines, close to the BMP280 board.
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Setup
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-----
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.. image:: P030_Setup_BMP280_1.png
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Task settings
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~~~~~~~~~~~~~
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* **Device**: Name of plugin
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* **Name**: Name of the task (example name **BMP**)
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* **Enable**: Should the task be enabled or not
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Sensor
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^^^^^^
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* **i2C address**: You can use two BMP280 at the same time, choose address here. If you only use one, stay with the default address.
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* **Altitude**: Set the level above sea for your unit. This is done in order to get a correct pressure value.
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Data acquisition
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^^^^^^^^^^^^^^^^
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* **Send to controller** 1..3: Check which controller (if any) you want to publish to. All or no controller can be used.
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* **Interval**: How often should the task publish its value (5..15 seconds is normal).
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Indicators (recommended settings)
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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.. csv-table::
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:header: "Indicator", "Value Name", "Interval", "Decimals", "Extra information"
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:widths: 8, 5, 5, 5, 40
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"Temperature", "Celsius", "10", "1", ""
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"Pressure", "hPa", "10", "0", ""
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Rules examples
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--------------
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.. code-block:: html
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on BMP#hPa do
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if BMP#hPa>999
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Publish,%sysname%/pressure,Is normal
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endif
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endon
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.. Commands available
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.. ~~~~~~~~~~~~~~~~~~
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.. .. include:: P030_commands.repl
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Where to buy
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------------
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.. csv-table::
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:header: "Store", "Link"
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:widths: 5, 40
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"AliExpress","`Link 1 ($) <http://s.click.aliexpress.com/e/qMVQ66k>`_"
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"Banggood","`Link 2 ($) <https://www.banggood.com/search/bmp280.html?sbc=1&p=V3270422659778201806&custlinkid=99988>`_"
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"eBay","`Link 3 ($) <http://rover.ebay.com/rover/1/711-53200-19255-0/1?ff3=4&pub=5575404073&toolid=10001&campid=5338336929&customid=&mpre=https%3A%2F%2Fwww.ebay.com%2Fsch%2Fi.html%3F_from%3DR40%26_trksid%3Dm570.l1313%26_nkw%3Dbmp280%26_sacat%3D0>`_"
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|affiliate|
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.. More pictures
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.. -------------
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.. .. image:: P030_BMP280_2.jpg
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