HardLabs

Audio

leesanghun-droid·A-project·audio/audio.kicad_pcb

Audio PCB layout, top view — open source Raspberry Pi board by leesanghun-droid

About the Audio PCB

Audio is an open source Raspberry Pi PCB design by leesanghun-droid, published on GitHub. It is a 4-layer board measuring 120 × 120 mm, with 149 components from 36 distinct parts.

Its main chip is the ComputeModule4-CM4, from the Raspberry Pi family. Other key parts include the RT9742SNGV, ISO1540, TPD4EUSB30, SPU0414HR5H-SB and MIC_MODULE_4PIN. By type, the board carries 59 resistors, 54 capacitors, 24 ICs, 8 connectors and 1 crystal.

It belongs with the audio designs in this gallery.

Main components on the Audio

RT9742SNGVISO1540TPD4EUSB30SPU0414HR5H-SBMIC_MODULE_4PINSI8663BB-B-IS1AC108TCR3RM12A,LFMIC_4PIN_SMD

Audio bill of materials (BOM)

149 components, 36 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
RT9742SNGV
U1
1
ISO1540
U2
4
TPD4EUSB30
U3, U5, U6, U7
4
SPU0414HR5H-SB
U4, U19, U21, U23
4
MIC_MODULE_4PIN
U8, U20, U22, U24
1
SI8663BB-B-IS1
U9
1
AC108
ac108
U10
4
TCR3RM12A,LF
TCR3RM33
U11, U12, U13, U14
4
MIC_4PIN_SMD
U15, U16, U17, U18
1
ASE-24.000MHZ
ASE-24.000MHz
X1
1
HDMI
J1
1
JK00177
J2
2
1054500101
J4, J5
2
CONN_01X10
Conn_01x10
J6, J7
2
CONN_01X10
Conn_01x10
J8, J9
1
ComputeModule4-CM4
CM4_MODULE1
2
R05CTE05S-R
PS1, PS2
3
0.1UF
100n
C1, C2, C39
17
0.1UF
0.1uF
C3, C4, C6, C7, C9, C10, C12, C13 +9
4
10NF
10nF
C5, C8, C11, C14
Show 16 more
QtyPartRefs
22
1UF
1uF
C41, C42, C43, C44, C45, C47, C48, C49 +14
5
10UF
10uF
C46, C60, C63, C68, C70
1
100UF
100uF
C73
1
100UF
100u
C82
1
47U
10u
C103
2
0R
R1, R2
11
NC
R3, R4, R12, R13, R14, R15, R19, R20 +3
24
0
R5, R6, R7, R8, R9, R17, R23, R24 +16
4
2.2K 1%
R10, R11, R16, R18
2
NC
R25, R32
2
10K
10k
R26, R31
1
10
R27
3
10
R28, R29, R30
2
15K 1%
R35, R36
4
0
R43, R45, R51, R53
4
1k
R46, R47, R48, R49

Audio design files

The KiCad project lives in the leesanghun-droid/A-project repository on GitHub; these links point at the commit this page was built from.

Audio: common questions

What microcontroller does the Audio use?

The Audio is built around the ComputeModule4-CM4, from the Raspberry Pi family.

How big is the Audio PCB?

The Audio measures 120 × 120 mm, has 4 copper layers and is 1.608 mm thick.

How many components are on the Audio?

149 components, from 36 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 design files?

From the leesanghun-droid/A-project 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 design in my own project?

The repository has no license, so all rights stay with leesanghun-droid. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Audio 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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