Alarms

Goals

The goal was to set and control permanent alarms, that should not be deleted by a restart. We wanted to be able to:

• Set/Delete an alarm
• Stop the alarm
• (Change the sound of the alarm)

Rhasspy

In Rhasspy we have to add new lines to the sentences.ini:

    [SetAlarm]
    (setze | stelle) einen wecker (auf | um) (0..24){hours} (uhr)
    (setze | stelle) einen wecker (auf | um) (0..24){hours} (uhr) (0..59){minutes}
    
    [GetAlarm]
    wann (klingelt | geht) (der | mein) wecker
    
    [DeleteAlarm]
    lösche (den | meinen) (aktuellen) wecker

Example sentences

Some example sentences are:

    1. stelle einen wecker um 12 uhr
    2. setzen einen wecker auf 9 uhr 27

    3. wann geht mein wecker
    4. wann klingelt der wecker

    5. lösche meinen aktuellen wecker

Node-Red

You can find the flow for all functions of this feature here.
(It is the same flow, we used for the time-request and the timer)

The left link-in-nodes are coming from the “Intent-Switch”.

SetAlarm

The nodes are used for:

• function-node(top): creates TTS-message as command-feedback

• function-node(center-left): sets msg.payload to msg.slots and sets undefined minutes to zero
• function-node(center): calculates the difference between the system-time and the alarm-time, sets msg.delay as milliseconds
• delay-node(center): delays the msg-object by the msg.delay-time
• file_in-node: loads the alarm-sound
• wav_headers-node: reads some information from the alarm-sound
• function-node(right-top): sets msg.delay relative to msg.duration from the wav_headers-node

• delay-node(right): delays the msg-object by the msg.delay-time

• switch-node: switches by incoming intent to either loop the alarm or stop the alarm

• function-node(right-bottom): creates TTS-message as command-feedback

• persist-node(left): reads the alarm-time at boot

• delay-node(left): prevents errors by delaying

• injection-node: triggers the clearing of the alarm-time
• function-node(bottom): creates empty msg-object to realise deletion
• persist-node(right): stores and deletes alarm-times

DeleteAlarm

The nodes are used for:

• function-node: creates TTS-message as command-feedback

GetAlarm

The nodes are used for:

• persist-node: reads the alarm-time
• function-node: creates TTS-message with alarm-time as variable

The complete “Alarm-logic”

The link-nodes are connected to:

• green: command-request
• blue: audio-output(TTS)
• orange audio-output(.wav)

What’s Next?

I want to cook my egg for 59 minutes, please set a timer!