HardLabs

Mp3-player

espcaa·mp3-player·src/kicad/mp3player.kicad_pcb

Mp3-player PCB layout, top view — open source RP2040/RP2350 board by espcaa
Simulate this board

About the Mp3-player PCB

Mp3-player is an open source RP2040/RP2350 PCB design by espcaa, published on GitHub under the Custom license license. It is a 4-layer board measuring 52 × 115.8 mm, with 141 components from 50 distinct parts.

Its main chip is the RP2350B, from the RP2040/RP2350 family. Other key parts include the ABM8-272-T3, W25Q128JVE, APS6404L-SQRX-ZR, PCM5102A and TPS63070RNMR. By type, the board carries 55 capacitors, 51 resistors, 11 ICs, 9 switches, 5 connectors and 4 diodes.

It belongs with the audio and power & battery designs in this gallery.

From the project

a minimalist open source pocket sized¹ mp3 player

{BOM} - {JOURNAL} - {PCB} - {FIRMWARE} - {CAD}

A minimalist open source pocket sized¹ mp3 player\ \ (¹ if your pocket is big enough to fit a 115mmx50mmx20mm brick)

I bring my phone every time, everywhere I go. My main excuse is that I need it for music, but that's not usually what ends up happening... So I built this to have a dedicated music player that I could bring with me when I don't need a phone! (mainly high school or going for a walk)\ I also wanted to learn how to design a more complex & integrated pcb!\ \ If you find this cool, you should read the journal I kept while designing…

Mp3-player, from the project README
From the project README

Main components on the Mp3-player

ABM8-272-T3W25Q128JVEAPS6404L-SQRX-ZRPCM5102ARP2350BTPS63070RNMRBQ24075RGTMAX17048G_T10LP5907MFX-3.3TPS61165DRVTCA9555RTWR

Mp3-player bill of materials (BOM)

141 components, 50 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ABM8-272-T3
ABM8-272-T3_C20625731
ABRACON
U1
1
W25Q128JVE
U3
1
APS6404L-SQRX-ZR
APS6404L-SQRx-ZR
U4
1
PCM5102A
U5
1
RP2350B
U6
1
TPS63070RNMR
U7
1
BQ24075RGT
U8
1
MAX17048G_T10
U9
1
LP5907MFX-3.3
U10
1
TPS61165DRV
U11
1
TCA9555RTWR
U12
3
BSS138
Q2, Q3, Q4
1
C125615
SD_Card_Receptacle
J1
1
USB_C_RECEPTACLE_USB2.0_16P
USB_C_Receptacle_USB2.0_16P
J2
1
CONN_01X02
Conn_01x02
J5
1
CONN_01X42
Conn_01x42
J6
1
AUDIOJACK3_GROUND_SWITCHTR
AudioJack3_Ground_SwitchTR
J7
3
EVQPUL02K
SW1, SW7, SW10
5
SW_Push
SW3, SW4, SW5, SW8, SW9
1
TS-1088-AR02016
SW11
Show 30 more
QtyPartRefs
1
MBR0540T1G
D1
2
C8598
D_Schottky
D2, D3
1
LED
D4
1
3.3U
3.3u
L1
1
1.5UH
1.5uh
L2
1
10UH
10uh
L3
4
4.7U
4.7u
C1, C2, C3, C5
22
100NF
100nf
C4, C6, C7, C8, C9, C10, C11, C12 +14
2
15P
15p
C20, C21
3
2.2UF
2.2uf
C23, C45, C48
5
1UF
1uf
C24, C25, C29, C42, C55
7
10UF
10uf
C26, C31, C33, C37, C38, C49, C50
4
4.7UF
4.7uf
C28, C30, C41, C53
3
22UF
22uf
C34, C35, C36
2
2.2NF
2.2nf
C39, C40
2
10UF
10uf
C52, C57
1
200NF
200nf
C54
7
33
R1, R32, R33, R38, R48, R49, R50
2
27
R2, R3
3
1k
R4, R6, R16
25
10K
10k
R5, R7, R8, R9, R10, R11, R12, R17 +17
2
5.1K
5.1k
R13, R14
1
820
R15
3
100K
100k
R19, R26, R30
1
470K
470k
R20
1
150K
150k
R21
2
470
R23, R24
1
6.8
R34
2
4.7K
4.7k
R36, R37
1
330
R51

Mp3-player design files

The KiCad project lives in the espcaa/mp3-player repository on GitHub; these links point at the commit this page was built from.

Mp3-player: common questions

What microcontroller does the Mp3-player use?

The Mp3-player is built around the RP2350B, from the RP2040/RP2350 family.

How big is the Mp3-player PCB?

The Mp3-player measures 52 × 115.8 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Mp3-player?

141 components, from 50 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 espcaa/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?

It is published under Custom license, which limits how it may be reused; read the license before building on it.

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.

Similar boards