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This small, affordable yet high-quality device is a standalone audio file player that reads files stored on a micro-SD card (sold separately). It plays WAV or MP3 files from the card in mono.

If you're looking for a more "intelligent" device, check out my "Ambi'Son" module. Need help choosing between the two?

Need the user manual for this module?

When adding it to your cart, you’ll be able to choose from the following options:

Power supply:
- USB-C connector (power adapter and cable sold separately)
- OR micro-USB connector (power adapter and cable not included)
- OR 3 x AA battery holder (batteries, formerly LR06, not included)
- OR 4 x AAA battery holder (batteries, formerly LR03, not included)
- OR 1 x 18650 battery holder (18650 battery, not included)
Audio output:
- 3.5 mm mini-jack
- OR 3-watt speaker (?)
- OR 3-watt resonator (?)

It’s ideal for creating a sound installation, an exhibition, a museum setup, a stage design, an audio kiosk, integrating into an artwork, or for model making, for example.

From
20,00 €

This article is in stock :)

En vidéo

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Additional information

Here are some demonstrations of what you can do with it:

Technical Specifications

User Manual
Power supply options:
- USB-C
- Micro-USB
- 3 x AA battery holder (batteries, formerly LR06, not included)
- 4 x AAA battery holder (batteries, formerly LR03, not included)
- 1 x 18650 battery holder (18650 battery, not included)
Storage: "MicroSD" or "TF" card (sold separately), formatted in Fat16 or ExFat, up to 32 GB
Supported formats: .mp3 and .wav
Audio channels: Mono
Playback options via push button:
- All files in order, looped
- First file, played once
- First file, looped
Audio power: 3-watt amplifier (at 4 Ω)
Output impedance: 4 Ω. For a "line output", choose the "Ambi'Son" module.
Volume: Analog, adjustable with a screwdriver
Audio outputs (choose one):
- 3.5 mm jack (for headphone use, the "Ambi'Son" module is recommended)
- 3W speaker
- 3W resonator
Power consumption: between 10 mA and 20 mA
Dimensions: 40 mm in diameter, 20 mm thick. Drilling details: see last image.
Indoor use only, sensitive to moisture and rain.
Current version: V5
Handmade

In Detail

The module includes a push button: a short press plays the first file once; a long press plays it on repeat. If you press the button during startup (or short-circuit the "AdKey1" terminal with a permanent wire), it will loop through all files on the card.

It features two screw terminals labeled "1" and "2" on the board, corresponding to "AdKey1" and "AdKey2". You can connect multiple push buttons to these terminals in parallel by wiring them in series with resistors (more info here).

The module can be powered with 3.2 to 5 volts, but a 5V supply is recommended for full 3W audio output. The module itself is extremely energy-efficient: under 10 mA! However, so-called "smart" power banks may shut off if the sound level is low. Be sure to test!

If you want to understand how it works or trigger multiple files, check out the user manual. If you want to build your own, see my guide "Build a Sound Box".

Since the module comes bare, you’ll need to build a small case if desired. Make sure nothing conductive touches the circuit board — not even the metal speaker frame. A fatal short-circuit could destroy the Pico!

I designed the entire device myself: from the PCB layout to soldering the components. It’s entirely handmade.

In case of issues, contact me.