mirror of
https://github.com/esphome/esphome-docs.git
synced 2024-12-30 18:09:26 +01:00
93 lines
4.5 KiB
ReStructuredText
93 lines
4.5 KiB
ReStructuredText
ESP32 Bluetooth Low Energy Beacon
|
|
=================================
|
|
|
|
.. seo::
|
|
:description: Instructions for setting up Bluetooth Low Energy iBeacons using the BLE feature on ESP32s.
|
|
:image: bluetooth.svg
|
|
|
|
The ``esp32_ble_beacon`` component creates a Bluetooth Low Energy Beacon with your ESP32 device.
|
|
Beacons are BLE devices that repeatedly just send out a pre-defined packet of data. This packet
|
|
can then be received by devices like smartphones and can then be used to track a phone's location.
|
|
|
|
|
|
.. code-block:: yaml
|
|
|
|
# Example configuration entry
|
|
esp32_ble_beacon:
|
|
type: iBeacon
|
|
uuid: 'c29ce823-e67a-4e71-bff2-abaa32e77a98'
|
|
|
|
Configuration variables:
|
|
------------------------
|
|
|
|
- **type** (**Required**): The type of beacon to create, currently only supports ``iBeacon``.
|
|
- **uuid** (**Required**): The `universally unique identifier <https://en.wikipedia.org/wiki/Universally_unique_identifier>`__
|
|
to identify the beacon.
|
|
- **id** (*Optional*, :ref:`config-id`): Manually specify the ID for code generation.
|
|
|
|
Advanced options:
|
|
|
|
- **major** (*Optional*, int): The iBeacon major identifier of this beacon. Usually used to
|
|
group beacons, for example for grouping all beacons in the same building, but has no effect if
|
|
the BLE receiver doesn't use it. Defaults to ``10167``.
|
|
- **minor** (*Optional*, int): The iBeacon minor identifier of this beacon. Usually used to
|
|
identify beacons within an iBeacon group. Defaults to ``61958``.
|
|
- **min_interval** (*Optional*, :ref:`config-time`): The iBeacon minimum transmit interval in milliseconds from 20 to 10240.
|
|
Setting this less than ``max_interval`` gives the BLE hardware a better chance to avoid
|
|
collisions with other BLE transmissions. Defaults to the iBeacon specification's defined interval: ``100ms``.
|
|
- **max_interval** (*Optional*, :ref:`config-time`): The iBeacon maximum transmit interval in milliseconds from 20 to 10240.
|
|
Setting this greater than ``min_interval`` gives the BLE hardware a better chance to avoid
|
|
collisions with other BLE transmissions. Defaults to the iBeacon specification's defined interval: ``100ms``.
|
|
- **measured_power** (*Optional*, int): The RSSI of the iBeacon as measured 1 meter from the device.
|
|
This is used to calibrate the ranging calculations in iOS. The procedure for setting this value can
|
|
be found in Apple's `Getting Started with iBeacon PDF <https://developer.apple.com/ibeacon/Getting-Started-with-iBeacon.pdf>`__
|
|
under the heading *Calibrating iBeacon*. Between -128 to 0. Defaults to ``-59``.
|
|
- **tx_power** (*Optional*, int): The transmit power of the iBeacon in dBm.
|
|
One of -12, -9, -6, -3, 0, 3, 6, 9. Defaults to ``3dBm``.
|
|
|
|
Setting Up
|
|
----------
|
|
|
|
First, you'll need to set up the configuration for ESPHome. Just copy the configuration above and
|
|
change the UUID to something unique. For example, you can copy this randomly generated UUID:
|
|
|
|
.. raw:: html
|
|
|
|
<input type="text" id="ble-uuid" onclick="this.focus();this.select()" style="width: 240px;" readonly="readonly">
|
|
<script>
|
|
// https://stackoverflow.com/a/105074/8924614
|
|
function guid() {
|
|
function s4() {
|
|
return Math.floor((1 + Math.random()) * 0x10000)
|
|
.toString(16)
|
|
.substring(1);
|
|
}
|
|
return s4() + s4() + '-' + s4() + '-' + s4() + '-' + s4() + '-' + s4() + s4() + s4();
|
|
}
|
|
document.getElementById("ble-uuid").value = guid();
|
|
</script>
|
|
|
|
Then, just compile and flash the ESP32.
|
|
|
|
When everything is set up correctly, you should see a show up using your iBeacon scanner of choice. On iPhones,
|
|
this should already work from the Bluetooth screen (not tested), on Android, you will need to use an app like
|
|
`"Beacon Scanner" <https://play.google.com/store/apps/details?id=com.bridou_n.beaconscanner>`__ by Nicolas Bridoux.
|
|
|
|
For using these beacons to track the location of your phone, you will need to use another app. For example, I used
|
|
`this guide by the owntracks <https://owntracks.org/booklet/features/beacons/>`__ app to let my Home Automation system
|
|
know when I'm home or away. Another nice Android app is `Beacon MQTT <https://turbo-lab.github.io/android-beacon-mqtt/>`__.
|
|
It can work with multiple beacons simultaneously.
|
|
|
|
.. figure:: images/esp32_ble_beacon-ibeacon.png
|
|
:align: center
|
|
:width: 75.0%
|
|
|
|
See Also
|
|
--------
|
|
|
|
- :doc:`esp32_ble_tracker`
|
|
- :doc:`binary_sensor/ble_presence`
|
|
- :apiref:`esp32_ble_beacon/esp32_ble_beacon.h`
|
|
- `ESP32 BLE for Arduino <https://github.com/nkolban/ESP32_BLE_Arduino>`__ by `Neil Kolban <https://github.com/nkolban>`__.
|
|
- :ghedit:`Edit`
|