Build your MusicBox
Build your MusicBox yourself: flash the firmware straight from your browser, follow the wiring tutorial and the parts list.
A repairable, build-it-yourself NFC music player
TMB-prototype-04
An audio player for children, repairable and upgradable, that lets you play stories, music and podcasts on their own using NFC tags.
- MP3 playback triggered by an NFC tag
- 4 action buttons and a rotary encoder: press it to play or pause, turn it for the volume
- An 8 LED strip to show the state
- Content on a microSD card, managed over WiFi
- No tracking
Breadboard, Development board or The Open Music Box player
Whether you want to get going fast or aim for a polished version, three paths lead to your own MusicBox.
Breadboard / hand-wired
Assemble the parts on a breadboard with Dupont wires. No electronic board fabrication required.
- Off-the-shelf parts, easy to source
- Full wiring tutorial
- Build it yourself from the BOM below
To join the project right now.
Development board
An all-in-one dedicated board by HermitX. Ships with the NFC antenna, a 3 W speaker and an NTAG215 card. This third-party board bundles most of the features we want for our product: you can use it as a development board while waiting for our official board.
- ESP32-S3 N8R8 (8 MB PSRAM onboard, required by the firmware)
- PN5321 NFC reader + external antenna included
- MAX98357 I2S amp + 3 W speaker included
- 8× WS2812B LEDs + microSD reader (up to 32 GB)
Disclaimer: the Development board is a prototype product intended for prototyping and makers. It carries no regulatory certification and is provided "as is", without warranty of any kind.
Buy from HermitXFor a clean, reproducible version.
The Open Music Box player
Our own dedicated electronic board, with quality components: audio jack connector and battery management.
- Everything the Development board offers
- Superior sound quality
- Modular design, grow the MusicBox with your child
- Audio jack + built-in battery management
- Adaptive brightness
- Certifications planned
- Available standalone, as a DIY kit, or in a complete product
For the most polished version.
Start on a breadboard to validate the build, or jump straight to the Development board, available now.
Control your MusicBox from the app
Manage content, pair NFC tags and control playback from the The Open Music Box app, on iOS and Android.
Works with all three versions: breadboard, Development board and The Open Music Box player.
Beta access: TestFlight (iOS) and Google Play closed testing


Join the project
A question, an improvement, want to contribute? The community welcomes you on Discord and GitHub.