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Claude
75dd63b56f
A printable reimagining of the wooden Kidsbox: rectangular cabinet with two front speakers, removable top lid (NFC tag rests there, reader mounts beneath), and swappable speaker mounts. - kidsbox.scad: master model + part dispatcher (body/lid/speaker_adapter/grill) - params.scad: all tunable dimensions in one place - lib.scad: helper modules (rounded shell, bosses, bolt circles) - Fixed front-panel speaker interface + swappable adapter so any driver fits by printing a new adapter (edit spk_* params, re-export) - Internal mounts: 2x18650 cradle, ESP32-LyraT standoffs, RC522 under lid, 3 buttons on lid, USB/charge + power-switch side ports, back-wall vents - Snap-in speaker grills - Makefile to export STLs and render previews (headless via xvfb) - Exported STLs and preview renders included - Link enclosure from main README Dimensions are sensible defaults from the reference photos and common parts; README flags the fit-critical values to verify before mass-printing. https://claude.ai/code/session_01MhAnh68DPNnTjcKqjNYDmk
136 lines
3.7 KiB
Markdown
136 lines
3.7 KiB
Markdown
# Kidsbox
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A battery-powered, RFID/NFC-tag-controlled audio player for kids.
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Place an NFC tag on the box — the mapped audio file or stream plays automatically.
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Tags are programmed from a smartphone using any NFC writing app (e.g. NFC Tools).
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The box streams from the URL written to the tag, caches it locally for offline play,
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and exposes a web interface for playback control and storage management.
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|Front|Side|
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---
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## Quick Start
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### 1. Install the development environment
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```bash
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./install.sh
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```
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This installs **ESP-IDF v5.2** and **ESP-ADF v2.7** into `~/esp/` and writes a `.env` file.
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Existing installations are detected automatically (via `$IDF_PATH` / `$ADF_PATH`).
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### 2. Configure and build
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```bash
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source .env && source $IDF_PATH/export.sh
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./setup.sh
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```
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`setup.sh` will:
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- Prompt for your WiFi SSID and password
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- Build the firmware (`idf.py build`)
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- Optionally flash to the device
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- Optionally prepare an SD card (create directories, copy web UI)
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---
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## How It Works
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1. Write an audio URL to an NFC tag with a smartphone app (e.g. **NFC Tools**).
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2. Place the tag on the box → the box reads the URL, streams the audio, and caches it.
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3. Subsequent plays of the same tag use the local cache (no internet needed).
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4. Removing the tag pauses playback; replacing it resumes.
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Without an NDEF URL on a tag, the box falls back to a local mapping file at
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`/sdcard/internal/<tag-id>` (plain text, one URL or file path per file).
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---
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## Web Interface
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Once connected to WiFi, open `http://<device-ip>` in a browser.
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| Section | What it does |
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| Now Playing | Track URI, play/pause/stop, volume slider |
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| Device Info | IP address, playback status, cache size, free heap |
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| Storage | List and delete cached files |
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| Bluetooth | Toggle BT speaker mode (stub — in progress) |
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---
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## Enclosure
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A parametric, fully 3D-printable enclosure lives in [`enclosure/`](enclosure/) —
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a rectangular cabinet with two front speakers and a removable top where the NFC tag
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rests, with **swappable speaker mounts** so you can print an adapter to fit your
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drivers. See [`enclosure/README.md`](enclosure/README.md).
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---
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## Hardware
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### Parts
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| Part | Links |
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| ESP32-LyraT 4.3 | [Mouser](https://www.mouser.de/ProductDetail/Espressif-Systems/ESP32-LyraT?qs=MLItCLRbWsxPzPCja546ZA%3D%3D) |
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| RC522 RFID/NFC module | — |
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| SD card (FAT32, any size) | — |
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### DIP-Switch (LyraT 4.3)
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| Switch | Position | Purpose |
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| 1 | OFF | Disconnects GPIO 12 from SD-D2 |
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| 2 | OFF | Disconnects GPIO 13 from SD-D3 |
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| 3 | OFF | Connects GPIO 15 to SD CMD |
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| 4 | ON | Connects GPIO 13 to JTAG header |
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| 5 | ON | Connects GPIO 12 to JTAG header |
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| 6 | OFF | Connects GPIO 13 to SD CLK |
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| 7 | OFF | Disconnects GPIO 12 from AUX-in detection |
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| 8 | OFF | — |
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### RC522 Wiring
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> MISO/MOSI pin names are **not** inverted between host and chip on this board.
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| RC522 Pin | LyraT v4.3 Pin | GPIO |
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| 3.3V | 3.3V | — |
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| RST | 3.3V | — |
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| GND | GND | — |
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| SDA | I2C SDA | 18 |
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| SCK | I2C SCL | 23 |
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| MOSI | JTAG MTCK | 13 |
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| MISO | JTAG MTDI | 12 |
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### SD Card Layout
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```
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/sdcard/
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www/ ← web interface files (copied by setup.sh)
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internal/ ← tag-id → URL/path mapping files (manual)
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cache/ ← downloaded audio files (managed automatically)
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```
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---
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## Roadmap
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- [x] RFID/NFC tag detection
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- [x] NDEF URL reading from NFC tags
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- [x] HTTP audio streaming
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- [x] Local file cache
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- [x] WiFi (native ESP-IDF, no Arduino dependency)
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- [x] Web interface — playback controls, storage, device info
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- [ ] Volume buttons (hardware)
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- [ ] Playlists
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- [ ] Bluetooth speaker mode (A2DP sink)
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