The LilyPad MP3 Player is an all-in-one audio board combining an Arduino-compatible microcontroller, MP3 decoder, microSD card socket, and stereo amplifier. Part of the LilyPad e-textiles line, it's designed to add music and sound effects to fabric creations, wearables, and interactive projects.

Out of the box, it plays specific audio files when any of its five trigger inputs are grounded. Add an optional RGB rotary encoder and load the included alternative firmware for track selection and volume control via a user interface. Powered by a 3.7V LiPo battery (with built-in charging circuit) or an external 3.5–6V source.

Key Features

• Microcontroller – ATmega 328p with Arduino bootloader (Pro 3.3V/8MHz)
• Audio Decoder – VS1053B (MP3, WAV, OGG, and more)
• Amplifier – TPA2016D2 stereo amplifier
• Charger – MCP73831 LiPo charger (500mA default, adjustable)
• Headphone Jack – 3.5mm stereo output
• Trigger Inputs – 5 inputs (also usable as analog, serial, and I2C)
• Power – 3.7V LiPo (charging built-in) or 3.5–6V external
• Programming – Via 5V FTDI Basic breakout using the Arduino IDE
• Optional – RGB rotary encoder header for UI control (not included)

Ideal For

• E-textile and wearable audio projects
• Interactive costumes and installations
• Sound-triggered exhibits and props
• Portable MP3 playback devices

Package Contents

• 1× LilyPad MP3 Player Board

Resources

• User's Guide
• GitHub Repository
• Schematic (PDF)
• VS1053B Datasheet (PDF)
• TPA2016D2 Datasheet (PDF)