AITRIP MP3 Decoder Module TF Card USB MP3 Player

AITRIP 5PCS MP3 decoder module is a compact audio playback board that reads MP3 files from TF cards or USB flash drives and outputs amplified audio using a 3.7–5.5V MicroUSB power supply.

This small decoder board combines file decoding, basic user controls and a low-voltage amplifier into a ready-to-use module for DIY audio projects, kiosks, toys and prototyping. Each pack contains five identical units, each measuring 45mm × 36mm, designed to boot and play automatically when powered and to indicate playback status via a red LED.

How does this module read and play music files?

The board supports MP3 files stored on either a TF (microSD) card or a USB flash drive (U disk). On power-up it defaults to TF card mode and will fall back to U disk if no TF card is present, and long-press controls let you manually switch sources.

• Compatible with TF cards (tested to 16GB) and U disks (tested to 32GB).
• Automatic playback on power-up with red LED showing working state.
• Long-press P/Mode button toggles between TF and U disk modes.

What controls and playback options are available?

Physical keys allow track navigation, volume control, play/pause and repeat mode selection. Short presses move tracks or toggle play/pause; long presses change volume or switch modes, enabling quick hands-on operation without extra hardware.

• Prev/V--: short press for previous track, long press to lower volume.
• Next/++: short press for next track, long press to raise volume.
• P/P/Mode: short press play/pause, long press to choose between U disk and TF card modes.
• Repeat: toggle single-track or full-playlist repeat when pressed briefly.

What power and connectivity options does it require?

The module accepts a wide low-voltage range so it adapts well to mobile chargers, power banks or single-cell lithium batteries. A MicroUSB connector is provided for convenient 5V supply via common phone chargers, but the board will also run from 3.7V battery sources within specifications.

• Power range: 3.7–5.5V (MicroUSB connector available).
• Suitable for powered setups using 5V USB chargers or 3.7V lithium cells.
• Some USB flash drives may require 5V to function reliably; TF cards typically work at lower voltages.

How do I integrate this module into projects or speakers?

The decoder exposes speaker terminals and control pins so it can be mounted into enclosures, integrated with amplifiers, or connected to simple speaker units without soldering at some terminal points. Its compact footprint makes it easy to fit into small housings for interactive displays, greeting cards or portable audio devices.

• Speaker output terminals for direct connection to small speakers.
• MicroUSB power input simplifies wiring during prototyping.
• Compact 45mm × 36mm board fits inside tight spaces and DIY housings.

Who is this for: Makers, educators and product developers who need a low-cost, plug-and-play MP3 playback board for prototypes, educational kits, custom toys, interactive displays and small audio projects. It’s ideal when simple file playback, basic on-board controls and flexible low-voltage power options are required without building a full audio stack from scratch.