jpmschweitzerandClaude Fable 5
b462dff082
Say "Computer" -> chime + listening -> speak -> AFE VAD detects you stopped -> auto-sends. No taps. Touch still works as a manual override. - esp-sr 2.4.6 added; wn9_computer_tts model packed into a new "model" flash partition (MODEL_IN_FLASH). App moved to 8M, model 4M. - audio.c: replaced the on-demand capture_task with an AFE pipeline — feed_task is the SOLE mic reader (-> afe->feed); detect_task fetches, watches wakeup_state for the wake word and vad_state for end of speech, and forwards AFE-cleaned audio upstream during an utterance. One mic reader ever. - short rising chime acknowledges the wake audibly. Fixes from adversarial review before trusting it: 1. utterance framing (blocking WS sends) moved OFF the AFE fetch thread onto an app_task event queue (EV_TOUCH/EV_WAKE/EV_SPEECH_END) — a 1.5s send could stall fetch and drop the first ~1.5s of speech. 2. app_task is now the single serializer of start/end -> no TOCTOU double-start (was: two utterance_start on a tap during wake). 3. VAD accounting resets on every streaming (re)start (wake OR tap), not just wake -> a tapped utterance can no longer end instantly on stale silence. 4. chime/reply set s_playing (+DMA tail hold) and detect_task skips the mic while s_playing -> our own audio no longer streams into STT or false-triggers the wake at a playback boundary (no AEC yet). 5. NULL-checked AFE create + feed buffer; tasks only start if AFE is up. Verified on hardware: model loads, AFE inits with the Computer word, boots and connects clean, no crash/wedge. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
DeskLock
A living-room visual/audio endpoint for Tatlock, the homelab butler. DeskLock gives Tatlock a face and a voice on a Waveshare round touch display: you talk to it, it listens, thinks, and answers — the first line of contact with the butler backend running on tower-of-joy.
Hardware
Waveshare ESP32-P4-WIFI6-Touch-LCD-3.4C
| Component | Details |
|---|---|
| SoC | ESP32-P4NRW32 — dual-core RISC-V @ 400 MHz + LP core |
| Memory | 32 MB PSRAM (in-package), 32 MB NOR flash |
| Display | 3.4" round IPS, 800×800, MIPI-DSI 2-lane, capacitive touch |
| Radio | ESP32-C6-MINI-1 (Wi-Fi 6 + BLE 5) over SDIO via ESP-Hosted |
| Audio in | Dual onboard microphones + ES7210 echo-cancellation ADC |
| Audio out | ES8311 codec, PH2.0 2-pin speaker connector (8Ω 2W recommended) |
| Flashing | USB-C (hold BOOT during reset for download mode) |
The device is currently connected over USB-C directly to tower-of-joy, so build/flash happens on this server.
Architecture
┌──────────────────────┐ WebSocket: PCM audio + JSON events
│ DeskLock device │◄───────────────────────────────────┐
│ (ESP32-P4) │ │
│ • LVGL face │ ┌──────────────────────────────┴───────────┐
│ • touch / wake word │ │ DeskLock Gateway (container, :8600) │
│ • mic capture + AEC │ │ thin orchestrator — no ML dependencies │
│ • TTS playback │ └───────┬──────────────────┬───────────────┘
└──────────────────────┘ │ │ OpenAI-format HTTP
│ ▼
HTTP (LAN) │ ┌─────────────────────────────┐
▼ │ Speaches (container, GPU) │
┌────────────────────┐ │ • STT: faster-whisper │
│ Tatlock (butler) │ │ • TTS: Kokoro / Piper │
│ tatlock.schweitz. │ │ also usable by Open WebUI, │
│ internal :8000 │ │ Home Assistant, … │
└────────────────────┘ └─────────────────────────────┘
Tatlock stays a text-only brain. The gateway orchestrates speech-to-text, chat, and text-to-speech; the Speaches container owns the actual STT/TTS models on the GPU, shared homelab-wide. The device firmware stays thin: audio transport, wake word, and face rendering only. Everything runs on the LAN — no cloud in the voice path.
See docs/architecture.md for the full design.
Repository layout
firmware/— ESP-IDF (C, LVGL 9) application for the ESP32-P4gateway/— Python FastAPI voice gateway, deployed as a container on tower-of-joysim/face/— browser simulator of the face (design source of truth; serve withpython3 -m http.serverand openindex.html, or use?state=…&nochrome=1for screenshots)docs/— architecture and design notes
Roadmap
Bring-up✅ — display, touch, audio, 200 MHz PSRAM, cathedral gong- Face + voice loop (in hardware test) — full LVGL face (7 states, rain, orbit, power ladder), Wi-Fi, WebSocket, touch-to-talk
- Voice (touch-to-talk) — tap to talk → gateway → Tatlock → spoken reply
- Wake word — esp-sr WakeNet on-device, echo cancellation, barge-in
- Polish — Tatlock-initiated notifications, presence, OTA updates