The Raspberry Pi Pico is a fantastic microcontroller with boundless possibilities, but like any technology, it has limitations. The MusicPi Pico audio expansion board is designed to complement your Raspberry Pi Pico and unlock its full potential, especially regarding audio applications. To take your headphone listening experience to the next level, the Pico Audio Expansion integrates the PAM8908JER stereo headphone amplifier. This amplifier enriches your audio with greater depth and clarity, making every note and sound detail come to life. With the Pico Audio Expansion, your headphones will become a portal to a world of breathtaking audio.
Features
- Powered by Raspberry Pi Pico/Pico W microcontroller, which is a Dual-core Arm Cortex-M0+ processor running up to 133 MHz
- 1.14″ T” T display for visual interaction
- Type C interface for power with supply indicator LED
- Onboard microSD card compatibility is useful for data logging and extended storage purposes
- Multipurpose GPIOs breakout for additional peripheral interfacing
- 3 Programmable Buttons to add additional controls to the project
- Two-channel RAW and Mono Class D Audio Amplified Output support 3W speakers per channel.
- PCM5100A 2VRMS DirectPath™ Stereo DAC
Pinout
Dimension
| Technical Specifications |
| Microcontroller |
Supports Raspberry Pi Pico/Pico 2/Pico W |
| Supply Voltage |
5V |
| Operating pin voltage |
3.3V |
| Amplifier |
NS4150 3W Mono Class D Audio Amplifier |
| Operating Temperature Range |
-20°C ~ +70°C |
| Audio Outputs |
Amplified Headphones (3.5mm) with PAM8908JER stereo headphone amp |
| Unamplified Line-Level |
| 3W Speaker Output per channel |
| DAC |
DAC Resolution: 32-bit |
| DAC Sampling Rate: Up to 384kHz |
| Display |
Display Size: 1.14″ |
| D “splay Type: IPS TFT |
| Display Resolution:Â Â 135(H) X 240(V) pixels |
| Display colors:Â 65K RGB |
| Luminance(cd/m2):Â 400(TYP) |
| Display interface:Â SPI |
| Display Driver:Â ST7789V |
Resources
Software GitHub: Getting Started Guide
Hardware GitHub: Hardware Design files like Schematic, Step and 3D
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