Educational & Therapeutic Floor Piano Kit
A robust, modular, and programmable floor piano for children, designed for education, therapy, and creative play.
The INT7 Modular Floor Piano is an open-source hardware/software project that empowers children to build, program, and play a large-scale, interactive piano. It is designed for classrooms, therapy, and STEAM education, with a focus on durability, safety, and extensibility.
- Hardware: ESP32-S3 based, modular key system, WS2812B LED feedback, robust pushbuttons.
- Software: Arduino (PlatformIO), BLE MIDI, real-time LED control, web-based programming interface (mBlock compatible).
- Connectivity: BLE MIDI, WiFi AP mode, WebSocket server, USB programming.
- Durable, Modular Hardware: Designed for repeated assembly/disassembly and child-safe operation.
- Programmable: Open system, programmable via mBlock or Arduino IDE.
- MIDI Output: BLE MIDI for use with GarageBand and other DAWs.
- Visual Feedback: Per-key RGB LED feedback and programmable light shows.
- Web App: Responsive, mobile-friendly interface for real-time control and pattern programming.
- Low Latency: Immediate feedback for both sound and light.
- Educational Modes: Song guidance, scale learning, and custom patterns.
- Portfolio-Ready: Clean, modern codebase and documentation.
- Board: ESP32-S3-DevKitC-1 (8MB/16MB flash, 8MB PSRAM supported)
- LEDs: WS2812B (Neopixel) strips
- Buttons: Robust pushbuttons, debounced in software
- Clone this repo
- Install PlatformIO
- Connect ESP32-S3 via USB
- Build and upload:
pio run -e esp32-s3-devkitc-1 -t upload --upload-port COMx - Upload web assets to LittleFS:
pio run -e esp32-s3-devkitc-1 -t uploadfs --upload-port COMx
- WiFi AP: Connect to
INT7-Piano(password:00000000) - Web App: Open http://192.168.4.1 for real-time LED and pattern control
- BLE MIDI: Connect to
ESP32-Pianofrom GarageBand or any BLE MIDI app
├── src/
│ ├── main.cpp # Main firmware (BLE MIDI, LED, button logic)
│ └── wifi_control.h # WiFi AP, WebSocket, LittleFS web server
├── data/
│ ├── index.html # Web app UI
│ ├── app.js # Web app logic
│ └── style.css # Web app styling
├── web_demo/ # (Optional) Standalone web demo
├── documentation/ # Schematics, BOM, hardware docs
├── platformio.ini # PlatformIO project config
└── README.md # This file
Developed by Team INT7:
- Rafael Vardanyan, 3823239
- Steven Fokoua, 10001713
- Harshith Sadhu, 3824426
- Oduma Maxwell, 3823078
- Harith Binoy, 3823291
- Atharv Rajaram Kharoshe, 3824410
Supervised by:
- Prof. Dr.- Ing. Peter Burda
- Prof. Dr. Nicolas Tiesler
Project developed on behalf of:
- Mr. Paul Göttinger
- Prof. Dr.- Ing. Winfried Wilke
This project is open-source under the MIT License.
See LICENSE for details.
For questions, collaboration, or feedback, please open an issue or contact the INT7 team.