MQTT Home Presence

Presence detection platform using bluetooth devices, re-use an old Smarphone as a presence detection manager, when detecting a allowed device, it will communicate it through MQTT then with HomeAssistant you can do the presence automation.PrerequisitesMQTT BrokerHome AssistantOld Smarphone AndroidSetup1 Open App2 Menu Wizard configuration3 Room settings (Dont forget to click save to save the changes)4 Add Allowed Devices, add the devices of each member of your family or friends5 Configure MQTT client, set up the MQTT client, check the connection to your MQTT broker ((Dont forget to click save to save the changes)6 Click Done7 Now you can press play and a background service will run, every minute or the time you configure in options, it will make a discovery of the devices around it, if it matches one with the list of allowed devices it will send it with MQTTIntegration with Home AssistantFor integration into Home Assistant is done using an mqtt sensor, see exampleconfiguration.yamlsensor: - platform: mqtt state_topic: andrews_home/first_floor/FF:00:11:22:36:11 value_template: {{ value_json.confidence }} unit_of_measurement: % name: Andrew First FloorThe mac address of the bluetooth device is sent as part of the topic mqttHow the confidence value is obtained?Confidence value ranges from 0 to 1.0If a device is found it increases by 0.5If a allowed device is not visible the range of bluetooth detection, it is decreased by 0.33