MP3-Player

tomstraka01-git·MP3-Player·PCB-MP3-Player/PCB-MP3-Player.kicad_pcb

About the MP3-Player PCB

MP3-Player is an open source RP2040/RP2350 PCB design by tomstraka01-git, published on GitHub under the MIT license. It is a 2-layer board measuring 70.5 × 76.6 mm, with 22 components from 12 distinct parts.

Its main chip is the RaspberryPi_Pico_W, from the RP2040/RP2350 family. By type, the board carries 7 resistors, 5 switches, 4 connectors, 3 capacitors, 1 module and 1 fuse.

It belongs with the audio and displays & leds designs in this gallery.

From the project

A dyi MP3 player that can play sounds stored on a micro sd card

I used a custom PCB, which takes power from a 3.7 Li-Po 450 mah (the battery should last for few hours) and passes it through a fast fuse for short circuit protection and diode for reverse connection protection. Then it goes to the rasberry pi pico 2 WH, which converts the power to stable 3.3V. The MCU reads the micro sd card reader module through spi, and then plays the song into the PCM5102A. It also displays all the info to the oled screen, and checks the five buttons for input. The five buttons have these features: - Volume Down - Volume Up - Previous Song - Next Song - Play/Pause

MP3-Player, from the project README — From the project README

Main components on the MP3-Player

RaspberryPi_Pico_W

MP3-Player bill of materials (BOM)

22 components, 12 distinct parts — part numbers from the project's BOM.

Qty	Part	Footprint	Refs
1	RaspberryPi_Pico_W	RaspberryPi_Pico_Common_THT	A1
1	Conn_01x02_Pin	JST_PH_S2B-PH-K_1x02_P2.00mm_Horizontal	J1
1	PCM5102A	PinSocket_1x06_P2.54mm_Vertical	J2
1	Oled	PinSocket_1x04_P2.54mm_Vertical	J3
1	Conn_01x06_Pin	JST_SH_SM06B-SRSS-TB_1x06-1MP_P1.00mm_Horizontal	J4
1	520.620	Fuseholder_Cylinder-5x20mm_Schurter_0031_8201_Horizontal_Open	F2
5	SW_Push	SW_PUSH_6mm_H4.3mm	SW1, SW2, SW3, SW4, SW5
1	1N5822	D_DO-201AD_P15.24mm_Horizontal	D1
3	100microFarad	CP_Radial_D6.3mm_P2.50mm	C1, C2, C3
1	100k	R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal	R3
1	330k	R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal	R4
5	10k	R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal	R5, R6, R7, R8, R9

MP3-Player design files

The KiCad project lives in the tomstraka01-git/MP3-Player repository on GitHub; these links point at the commit this page was built from.

LayoutPCB-MP3-Player/PCB-MP3-Player.kicad_pcb
SchematicPCB-MP3-Player/PCB-MP3-Player.kicad_sch
BOMBOM.csv

MP3-Player: common questions

What microcontroller does the MP3-Player use?

The MP3-Player is built around the RaspberryPi_Pico_W, from the RP2040/RP2350 family.

How big is the MP3-Player PCB?

The MP3-Player measures 70.5 × 76.6 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the MP3-Player?

22 components, from 12 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the MP3-Player design files?

From the tomstraka01-git/MP3-Player repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the MP3-Player design in my own project?

Yes, under the terms of its MIT license, which tomstraka01-git chose for the repository.

Can I test firmware for the MP3-Player without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.