Add component collection

source/_components/device_tracker.mqtt.markdown

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+---
+layout: page
+title: "MQTT device tracker"
+description: "Instructions how to use MQTT to track devices in Home Assistant."
+date: 2015-09-19 20:41
+sidebar: false
+comments: false
+sharing: true
+footer: true
+logo: mqtt.png
+ha_category: Presence Detection
+---
+
+<img src='/images/supported_brands/mqtt.png' class='brand pull-right' />
+This platform allows you to detect presence by monitoring an MQTT topic for new locations. To use this
+platform, you specify a unique topic for each device.
+
+```yaml
+# Example configuration.yaml entry
+device_tracker:
+  platform: mqtt
+  qos: 1
+  devices:
+    paulus_oneplus: /location/paulus
+    annetherese_n4: /location/annetherese
+```
+
+Configuration variables:
+
+- **devices** (*Required*): List of devices with their topic.
+- **qos** (*Optional*): The QoS level of the topic.
+