WVS Raspberry Pi Pico Audio Expansion Module PCM5101A I2S

The WVS Raspberry Pi Pico Audio Expansion Module is designed to add high-quality stereo audio output to Raspberry Pi Pico development boards. It incorporates a PCM5101A low-power stereo audio decoder/DAC and uses the I2S digital audio bus to receive and process audio signals from the connected Pico board.

The module supports a wide range of audio sampling rates from 8Hz to 384kHz, making it suitable for various digital audio playback and embedded sound applications. It provides simultaneous headphone and speaker output, allowing users to connect external headphones through the standard 3.5mm audio jack while also driving speakers through the onboard dual-channel speaker headers.

With a standard Raspberry Pi Pico header, 3.3V logic level and accessible audio connections, the module is suitable for audio experimentation, embedded multimedia projects, digital sound systems and Raspberry Pi Pico development. Development resources and example software are included to assist with audio playback and sound card applications.

Key Features

• Audio expansion module designed for Raspberry Pi Pico series boards.
• Standard Raspberry Pi Pico header for convenient connection.
• Onboard PCM5101A low-power stereo audio decoder/DAC.
• Uses a digital I2S audio interface.
• Supports 3-wire I2S communication to help reduce EMI.
• Provides stereo sound output.
• Supports audio sampling rates from 8Hz to 384kHz.
• Simultaneous headphone and speaker output.
• Standard 3.5mm audio jack for external headphones.
• Dual-channel speaker headers for direct speaker connection.
• Speaker driving capability of up to 2.6W per channel with 4 BTL speakers.
• Designed for 5V operating voltage and 3.3V logic level.
• Includes development resources and a user manual.
• Supports Raspberry Pi Pico audio playback and sound card example code.

Technical Specifications

• Product Code: WVS RASP PI PICO AUDIO EXP MODUL
• Product Type: Audio expansion module
• Compatible Platform: Raspberry Pi Pico series
• Operating Voltage: 5V DC
• Logic Level: 3.3V
• Audio Decoder/DAC: PCM5101A
• Audio Bus: I2S
• I2S Interface: 3-wire I2S
• Audio Sampling Rate: 8-384000Hz
• Audio Output: Stereo
• Headphone Output: Standard 3.5mm audio jack
• Speaker Output: Dual-channel speaker headers
• Speaker Driving Capability: 2.6W per channel with 4 BTL speakers
• DAC Signal-to-Noise Ratio: 106dB
• Board Connection: Standard Raspberry Pi Pico header
• Development Support: Audio playback code, sound card code, development resources and manual

Applications

The module can be used for a variety of Raspberry Pi Pico audio and embedded electronics projects, including:

• Digital audio playback systems.
• Raspberry Pi Pico sound cards.
• Embedded stereo audio applications.
• Headphone and speaker audio projects.
• Internet radio and streaming audio prototypes.
• Multimedia and interactive electronics.
• Educational audio development.
• Audio signal experimentation.
• Smart devices with sound output.
• Embedded alarms, prompts and voice playback.
• DIY music players and sound systems.
• Microcontroller-based audio demonstrations.

Connection and Usage

The module connects to a compatible Raspberry Pi Pico board through its standard Pico header. The connected Pico board supplies the digital audio signal through the I2S interface, while the module processes the signal through the onboard PCM5101A audio decoder/DAC.

Headphones can be connected using the standard 3.5mm audio jack. Speakers can be connected through the dual-channel speaker headers for stereo output. Ensure that the connected speakers match the supported electrical requirements and that the module is supplied with the specified 5V power.

Package and Development Support

The module is supplied with development resources and a manual, including example code for:

• Raspberry Pi Pico audio playback.
• Sound card functionality.
• Initial development and testing.

Important Information

• The module is designed for Raspberry Pi Pico series boards and compatible 3.3V logic systems.
• A suitable 5V power supply is required.
• Confirm speaker impedance and connection requirements before use.
• Headphone and speaker output availability may depend on the software configuration and connected audio source.
• The supplied specifications do not state the exact board dimensions or speaker connector type.

What's in the box
1 x WVS Raspberry Pi Pico Audio Expansion Module PCM5101A I2S