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Sound spectrum mcu

path321·sound_spectrum_mcu·pcb/sound_spectrum_v1.kicad_pcb

Sound spectrum mcu PCB layout, top view — open source STM32 board by path321

About the Sound spectrum mcu PCB

Sound spectrum mcu is an open source STM32 PCB design by path321, published on GitHub under the MIT license. It is a 4-layer board measuring 85.6 × 54 mm, with 35 components from 20 distinct parts.

Its main chip is the STM32G473CBT6, from the STM32 family. Other key parts include the ICS-43432, AP2112K-3.3TRG1 and USBLC6-2SC6. By type, the board carries 16 capacitors, 6 resistors, 5 ICs, 3 connectors, 2 diodes and 1 crystal.

It belongs with the audio and test & measurement designs in this gallery.

From the project

STM32-powered board to analyze sound from MEMS microphone

STM32-powered board for analyzing sound input from MEMS microphones, designed as an open-source, hands-on introduction to DSP on ARM Cortex-M4 processors.

1. About the Project 1. Project Status 1. Getting Started 1. Getting the Source 1. Usage 1. Versioning 1. How to get help 1. License

It uses the CMSIS-DSP library to handle computationally intensive tasks, while a companion PyQt-based Python script is used for plotting frequency-domain data data from PCB to host PC.

Sound spectrum mcu, from the project README
From the project README

Main components on the Sound spectrum mcu

ICS-43432STM32G473CBT6AP2112K-3.3TRG1USBLC6-2SC6

Sound spectrum mcu bill of materials (BOM)

35 components, 20 distinct parts.

QtyPartRefs
2
ICS-43432
IC1-L1, IC2-R1
1
STM32G473CBT6
STM32G473CBTx
U1
1
AP2112K-3.3TRG1
AP2112K-3.3
U2
1
USBLC6-2SC6
U3
1
ABMM2-24.000MHZ-E2-T
Y1
1
10129381-906004BLF
SWD_CONN
J1
1
77313-818-20LF
Conn_02x10_Counter_Clockwise
J2
1
USB4085-GF-A
USB_C_Plug_USB2.0
P1
1
TS04-66-55-BK-100-SMT-TR
SW_DPST_x2
SW2
1
C171KGKT
LED - Green
D1
1
CMDA5AR7D1S
LED - Red
D2
1
ASMPH-0805-4R7M-T
~
FB1
8
581-KGM21NR71E104KM
100nF
C1, C3, C6, C7, C8, C12, C13, C14
4
80-C0805C105Z4VAC
1uF
C2, C4, C5, C9
2
81-GRM21BR61C106KE15
10uF
C10, C11
2
80-C0805C105Z4VAC
33pF
C15, C16
1
603-AC0805DR-0710KL
10k
R1
2
603-AA0805FR-071KL
1k
R2, R4
1
CRCW08055K10JNEA
5.1k
R3
2
603-RC0805FR-074K7L
4.7k
R5, R6

Sound spectrum mcu design files

The KiCad project lives in the path321/sound_spectrum_mcu repository on GitHub; these links point at the commit this page was built from.

Sound spectrum mcu: common questions

What microcontroller does the Sound spectrum mcu use?

The Sound spectrum mcu is built around the STM32G473CBT6, from the STM32 family.

How big is the Sound spectrum mcu PCB?

The Sound spectrum mcu measures 85.6 × 54 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Sound spectrum mcu?

35 components, from 20 distinct parts. The full bill of materials is listed on this page.

Where can I download the Sound spectrum mcu design files?

From the path321/sound_spectrum_mcu repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Sound spectrum mcu design in my own project?

Yes, under the terms of its MIT license, which path321 chose for the repository.

Can I test firmware for the Sound spectrum mcu 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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