HardLabs

Wm8731-breakout

dvr0·bzzzbz·hardware/v1.0/audio_breakout/wm8731-breakout.kicad_pcb

Wm8731-breakout layout, top view — open source Raspberry Pi board by dvr0

About the Wm8731-breakout

Wm8731-breakout is an open source Raspberry Pi PCB design by dvr0, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 72.2 × 71.1 mm, with 39 components from 23 distinct parts.

Its main chip is the RASPBERRY_PI_4, from the Raspberry Pi family. Other key parts include the MCP3004. By type, the board carries 20 capacitors, 10 resistors, 7 connectors, 1 IC and 1 crystal.

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

From the project

Digital video synthesizer for live music performance! powered by Raspberry pi + OpenGL

If you are a musician, a visual artist or are curious about the mesmerizing videos on the wall of your local techno club, build and use bzzzbz to experiment and play with audio-reactive visuals! Among its main features, this open-source video synth gives you the live control of video parameters and the possibility of creating your own mappings and patterns for immersive audiovisual performances. ## Documentation Visit our wiki for the full documentation. ## Contributions - Davide Rovelli (daviderovell0) - Peter Nagy (deetrone) - Marcell Illyes (marcellillyes)

Wm8731-breakout, from the project README
From the project README

Main components on the Wm8731-breakout

MCP3004

Wm8731-breakout bill of materials (BOM)

39 components, 23 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
MCP3004
WM8731
Microchip
U1
1
Crystal - 12 MHz
Y1
1
LineOUT
CUI Devices
J1
1
Headphones
CUI Devices
J2
1
LineIN
CUI Devices
J3
1
RASPBERRY_PI_4
Conn_01x06
Adafruit
J4
1
Conn_01x02_3v3 (2)
J5
1
NHD-2.23-12832UCB3
Conn_01x04
Newhaven Display
J6
1
Conn_01x02_3v3 (1)
J7
2
220PF
1uF
Samsung Electro-Mechanics
C1, C2
2
1UF
220uF
AVX
C3, C4
2
220UF
220pF
LELON
C5, C6
2
1UF
1uF
AVX
C7, C8
4
10UF
10uF
AVX
C9, C10, C11, C15
5
0.1UF
0.1uF
Yageo
C12, C13, C14, C16, C17
1
1UF
10uF
AVX
C18
1
10UF
22pF
AVX
C19
1
1UF
22pF
AVX
C20
2
5.6K
100
Uniroyal Elec
R1, R2
2
5.6k
Uniroyal Elec
R3, R4
Show 3 more
QtyPartRefs
2
5.6K
47k
Uniroyal Elec
R5, R6
2
47K
47k
Uniroyal Elec
R7, R8
2
47K
5.6k
Uniroyal Elec
R9, R10

Wm8731-breakout design files

The KiCad project lives in the dvr0/bzzzbz repository on GitHub; these links point at the commit this page was built from.

Wm8731-breakout: common questions

What microcontroller does the Wm8731-breakout use?

The Wm8731-breakout is built around the RASPBERRY_PI_4, from the Raspberry Pi family.

How big is the Wm8731-breakout?

The Wm8731-breakout measures 72.2 × 71.1 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Wm8731-breakout?

39 components, from 23 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 Wm8731-breakout design files?

From the dvr0/bzzzbz repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the Wm8731-breakout design in my own project?

Yes, under the terms of its GPL-3.0 license, which dvr0 chose for the repository.

Can I test firmware for the Wm8731-breakout without the hardware?

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

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