plan.md

Plan: talk — Reachy Mini date/time announcer

What I understand you want

A Reachy Mini Python app (talk) that:

1. Wakes the robot up (animation + sound)
2. Speaks the current date and time in German via text-to-speech

App flavour

Python app (not JS) because:

• TTS requires espeak-ng on the robot
• This is a developer-style on-robot app, same pattern as the sibling recognizer
• The --template conversation is designed exactly for "making the robot talk"

Scaffold command (after plan approval):

reachy-mini-app-assistant create --template conversation talk /Users/oliver/Documents/dev/reachy_mini/talk --publish

Technical approach

1. TTS: espeak-ng -v de -s 130 -w /tmp/datetime.wav + reachy_mini.media.play_sound()
   German voice gives natural German phonetics for date/time strings.

2. Date/time string: Python datetime formatted manually in German
   e.g. "Heute ist Montag, der neunzehnte Mai 2026. Es ist 14 Uhr 30." — spelled-out numbers sound better from a TTS engine than digits.

3. Lifecycle: ReachyMiniApp subclass, --template conversation base

   • On run(): call reachy_mini.wake_up(), then speak the date/time string

Open questions — please fill in your answers

Q1: Trigger → B) Antenna press (either antenna → speak) Q2: Hardware → Wireless (onboard CM4) Q3: After speaking → Goes back to sleep