Broadcast Google Home alarms & timers

#homeassistant #nodered #automation #smarthome

Using Home Assistant and Node-RED I broadcast ringing Google Home alarms and timers to other media players.

Goal

When a Google Home alarm or timer rings broadcast it to other devices
Have a choice between TTS or playing a MP3 file

The subflow

The function node finds ringing alarms or timers and creates the data for the service call, it will send a message for each defined media player.

Code

const defaults = { timer: { items: 'timers', name: 'timer' }, alarm: { items: 'alarms', name: 'alarms' } } const mediaPlayers = env.get('media_players'); const mode = env.get('mode'); let type = ''; let callService = {} if(!msg.data || !mediaPlayers || !mode) { return null; } if(mode === 'tts') { callService = { domain: 'tts', service: 'google_translate_say', data: { entity_id: '', message: '', } } } else if (mode === 'mp3') { if(!env.get('file')) { return null; } callService = { domain: 'media_player', service: 'play_media', data: { entity_id: '', media_content_id: env.get('file'), media_content_type: 'music', } } } // Determine type: alarm or timer if(typeof msg.data.new_state.attributes.timers !== 'undefined' || typeof msg.data.old_state.attributes.timers !== 'undefined' ) { type = 'timer'; } else if (typeof msg.data.new_state.attributes.alarms !== 'undefined' || typeof msg.data.old_state.attributes.alarms !== 'undefined') { type = 'alarm'; } else { return null; } const typeValues = defaults[type]; const activeItem = (msg.data.new_state.attributes[typeValues.items] || []).find(item => item.status === 'ringing'); if (!activeItem) { return null; } mediaPlayers.trim().split(/,\s*/).forEach(player => { if(!player) return; callService.data.entity_id = player; if(mode === 'tts') { const deviceName = env.get('name') || msg.data.new_state.attributes.friendly_name; const ttsMsg = `${activeItem.label || ''} ${typeValues.name} RINGING on ${deviceName}`; callService.data.message = ttsMsg; } const message = { payload: callService }; node.send(message); }); // All done node.done();

Then the current state node checks if the media player is currently playing, if so we won't send anything to it.

How to use

Import the subflow in NR:
Add the subflow and connect alarm and/or timer sensors from the same device as events_state nodes.
Set the properties for the subflow:

Property	Description	Example
Media player ids	Comma separated list of `media_player` entities	`media_player.mini, media_player.hub`
Mode	TTS or MP3	`TTS`
Device name (TTS)	Overwrite name for TTS	`Hub`
File path (MP3)	Path to MP3 file	`/local/audio/bell.mp3`