HardLabs

Bz hat

dvr0·bzzzbz·hardware/v2.0/bz-hat/bz-hat.kicad_pcb

Bz hat layout, top view — open source Raspberry Pi board by dvr0

About the Bz hat

Bz hat 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 140 × 85 mm, with 48 components from 23 distinct parts.

Its main chip is the RASPBERRY_PI_4, from the Raspberry Pi family. Other key parts include the MCP3004 and WM8731. By type, the board carries 20 capacitors, 10 resistors, 6 connectors, 5 switches and 3 ICs.

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)

Bz hat, from the project README
From the project README

Main components on the Bz hat

MCP3004WM8731

Bz hat bill of materials (BOM)

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

QtyPartRefs
2
MCP3004
Microchip
U1, U3
1
WM8731
Cirrus Logic
U2
1
LineIN
CUI Devices
J1
1
LineOUT
CUI Devices
J2
1
Headphones
CUI Devices
J3
1
RASPBERRY_PI_4
Raspberry_Pi_4
Adafruit
J4
1
CVs+CLK_connector
J5
1
NHD-2.23-12832UCB3
Newhaven Display
J6
4
10k
RV1, RV2, RV3, RV4
1
BTN_f
E-Switch
SW1
1
BTN_big
E-Switch
SW2
1
BTN_1
E-Switch
SW3
1
BTN_2
E-Switch
SW4
1
BTN_3
E-Switch
SW5
2
220PF
220pF
Samsung Electro-Mechanics
C1, C2
6
1UF
1uF
AVX
C3, C4, C7, C8, C18, C20
2
220UF
220uF
LELON
C5, C6
5
10UF
10uF
AVX
C9, C10, C11, C15, C19
4
0.1UF
0.1uF
Yageo
C12, C14, C16, C17
1
0.1UF
0.1uF
Samsung Electro-Mechanics
C13
Show 3 more
QtyPartRefs
4
5.6K
5.6k
Uniroyal Elec
R1, R2, R5, R6
2
100
Uniroyal Elec
R3, R4
4
47K
47k
Uniroyal Elec
R7, R8, R9, R10

Bz hat design files

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

Bz hat: common questions

What microcontroller does the Bz hat use?

The Bz hat is built around the RASPBERRY_PI_4, from the Raspberry Pi family.

How big is the Bz hat?

The Bz hat measures 140 × 85 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Bz hat?

48 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 Bz hat 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 Bz hat 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 Bz hat 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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