HardLabs

Audio-Devboard

Outdatedcandy92·Audio-Devboard·src/kicad/Audio_Devboard.kicad_pcb

Audio-Devboard PCB layout, top view — open source STM32 board by Outdatedcandy92
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About the Audio-Devboard PCB

Audio-Devboard is an open source STM32 PCB design by Outdatedcandy92, published on GitHub under the CERN-OHL-W-2.0 license. It is a 4-layer board measuring 56 × 37 mm, with 80 components from 27 distinct parts.

Its main chip is the STM32F042K6U6TR, from the STM32 family. Other key parts include the VS1053B, LP5907MFX-3.3 and LP5907MFX-1.8. By type, the board carries 31 capacitors, 27 resistors, 6 switches, 6 diodes, 4 ICs and 3 connectors.

It belongs with the dev boards & breakouts and audio designs in this gallery.

From the project

Compact VS1053B audio dev board paired with a STM32 MCU, MicroSD, audio out, and line in. Capable of decoding and play lossless audio formats like FLAC.

A compact development board based around the VS1053B audio codec paired with a STM32F042 microcontroller. The board features a MicroSD card slot, Stereo audio output, Line in, and a few GPIO pins.

The board was designed to play around with the VS1053B chip which can decode audio files such as MP3, FLAC, AAC and more. The board features three onboard LED indicators for the 3 separate power rails, and has 3 programmable LEDs, two of them connected to the STM32 GPIO and one to the VS1053B GPIO.

Audio-Devboard, from the project README
From the project README

Main components on the Audio-Devboard

VS1053BSTM32F042K6U6TRLP5907MFX-3.3LP5907MFX-1.8

Audio-Devboard bill of materials (BOM)

80 components, 27 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
VS1053B
U1
1
STM32F042K6U6TR
U2
1
LP5907MFX-3.3
U3
1
LP5907MFX-1.8
U4
1
SX2B12.288F1210F30
Y1
2
Black headphone jack
J1, J2
1
CONN_01X08
Conn_01x08
J4
1
1040310811
SIM1
2
SW_Push
SW1, SW2
4
SW_Push
SW3, SW4, SW5, SW6
1
TYPE-C 16PIN 2MD(073)
USB1
6
LED
D1, D2, D3, D4, D5, D6
14
100NF
100nF
C1, C2, C3, C4, C6, C7, C8, C11 +6
3
10uF 6V3
C5, C10, C15
2
18PF
18pF
C9, C14
7
1UF
1uF
C16, C22, C23, C27, C28, C29, C30
1
47NF
47nF
C17
2
10NF
10nF
C18, C19
2
10NF/NP0
10nF/NP0
C20, C21
1
1M
R1
Show 7 more
QtyPartRefs
8
50K
R2, R9, R10, R11, R12, R19, R20, R21
1
10R
R3
4
20R
R4, R5, R26, R27
2
100K
R6, R23
2
470R
R7, R8
2
5.1K
R13, R14
7
10K
R15, R16, R17, R18, R22, R24, R25

Audio-Devboard design files

The KiCad project lives in the Outdatedcandy92/Audio-Devboard repository on GitHub; these links point at the commit this page was built from.

Audio-Devboard: common questions

What microcontroller does the Audio-Devboard use?

The Audio-Devboard is built around the STM32F042K6U6TR, from the STM32 family.

How big is the Audio-Devboard PCB?

The Audio-Devboard measures 56 × 37 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Audio-Devboard?

80 components, from 27 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 Audio-Devboard design files?

From the Outdatedcandy92/Audio-Devboard 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 Audio-Devboard design in my own project?

Yes, under the terms of its CERN-OHL-W-2.0 license, which Outdatedcandy92 chose for the repository.

Can I test firmware for the Audio-Devboard without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.

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