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STM32F411 USB AUDIO DAC

DeflateAwning·STM32F411_USB_AUDIO_DAC_PCB·stm32_dac_pcb/stm32_dac_pcb.kicad_pcb

STM32F411 USB AUDIO DAC PCB layout, top view — open source STM32 board by DeflateAwning

About the STM32F411 USB AUDIO DAC PCB

STM32F411 USB AUDIO DAC is an open source STM32 PCB design by DeflateAwning, published on GitHub under the CERN-OHL-P-2.0 license. It is a 2-layer board measuring 63.1 × 21.8 mm, with 50 components from 21 distinct parts.

Its main chip is the STM32F411CEUx, from the STM32 family. Other key parts include the AP1117-33 and PCM5102A. By type, the board carries 26 capacitors, 9 resistors, 4 ICs, 4 connectors, 3 jumpers and 2 switches.

It belongs with the audio designs in this gallery.

From the project

PCB for USB Audio DAC using STM32F411/401 IC and PCM5102A

This is a simple PCB for the perfboard-and-firmware project created by har-in-air at https://github.com/har-in-air/STM32F411USBAUDIO_DAC.

This project aims to create a very small, high-quality USB-C DAC, using KiCAD to make the PCB and OpenSCAD to make a simple 3D-printable enclosure. The firmware from the aforementioned project will be used as-is.

Soldering this project may be difficult; take a look at the perfboard option using the STM32 Black Pill and PCM5102A module if soldering small SMD components is outside of your capabilities.

Main components on the STM32F411 USB AUDIO DAC

AP1117-33STM32F411CEUxPCM5102A

STM32F411 USB AUDIO DAC bill of materials (BOM)

50 components, 21 distinct parts.

QtyPartRefs
2
AP1117-33
U1, U2
1
STM32F411CEUx
U3
1
PCM5102A
U4
1
25MHz, 9pF
Y1
1
Conn_01x03
J1
1
USB_C_Receptacle_USB2.0
J3
1
AudioJack4
J4
1
Conn_01x08
J5
3
SolderJumper_2_Open
JP1, JP2, JP3
2
SW_Push
SW1, SW2
1
LED
D1
8
10u
C1, C2, C3, C4, C15, C17, C23, C26
10
0.1u
C5, C8, C10, C11, C12, C13, C14, C16 +2
2
12p
C6, C7
5
2.2u
C9, C19, C20, C22, C24
1
100u
C18
1
5k1
R1
2
5.1k
R2, R3
2
10k
R4, R5
2
10
R6, R7
Show 1 more
QtyPartRefs
2
470
R8, R9

STM32F411 USB AUDIO DAC design files

The KiCad project lives in the DeflateAwning/STM32F411_USB_AUDIO_DAC_PCB repository on GitHub; these links point at the commit this page was built from.

STM32F411 USB AUDIO DAC: common questions

What microcontroller does the STM32F411 USB AUDIO DAC use?

The STM32F411 USB AUDIO DAC is built around the STM32F411CEUx, from the STM32 family.

How big is the STM32F411 USB AUDIO DAC PCB?

The STM32F411 USB AUDIO DAC measures 63.1 × 21.8 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the STM32F411 USB AUDIO DAC?

50 components, from 21 distinct parts. The full bill of materials is listed on this page.

Where can I download the STM32F411 USB AUDIO DAC design files?

From the DeflateAwning/STM32F411_USB_AUDIO_DAC_PCB repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the STM32F411 USB AUDIO DAC design in my own project?

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

Can I test firmware for the STM32F411 USB AUDIO DAC 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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