HardLabs

Audio board

stefvanson·audio-board

Audio board layout, top view — open source NXP board by stefvanson

About the Audio board

Audio board is an open source NXP PCB design by stefvanson, published on GitHub. It is a 2-layer board measuring 100 × 100 mm, with 77 components from 38 distinct parts.

Its main chip is the TEENSY4.0, from the NXP family. Other key parts include the AMS1117-5.0, PCM5102APWR, PCM1803ADBR, 6N138SDM and 24.576MHZ. By type, the board carries 30 capacitors, 17 connectors, 17 resistors, 6 ICs, 5 jumpers and 1 test point.

It belongs with the audio designs in this gallery.

From the project

Audio interface board design (PCB) for recording and playing back audio, MIDI IO and some additional IO.

This project contains the design files for an audio interface board (PCB).

- File -> Plot: Select for Front and Bottom (F. and B.) the layers Cu, Mask, Paste and SilkS. Also select the Edge.Cuts layer. In that same window at bottom left click "Generate Drill Files..." and generate it.

1. In the schematics editor (Eeschema) click the generate BOM button. 2. Select bom2group_csv and click "Generate". 3. JLCPCB expects the following columns, so adapt the generate CSV file to have these columns (rename and reorder columns): - Comment (the "Value" column) - Designator (the "Reference" column) -…

Main components on the Audio board

AMS1117-5.0PCM5102APWRPCM1803ADBRTEENSY4.06N138SDM24.576MHZ

Audio board bill of materials (BOM)

77 components, 38 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
AMS1117-5.0
IC1
1
PCM5102APWR
IC2
1
PCM1803ADBR
IC3
1
TEENSY4.0
Teensy4.0
U1
1
6N138SDM
U2
1
24.576MHZ
24.576MHz
U3
1
I2S2_OPT
J1
1
SPI_OPT
J2
1
Other Teensy pins
J3
1
UART_OPT
J4
1
163-179PH-EX
J5
1
EXTRA_POWER
J6
5
POT
J7, J8, J9, J10, J11
1
RASPBERRY_PI_2_3
Raspberry_Pi_2_3
J12
2
57PC5F
J13, J14
1
RCA_2X2
RCA_2x2
J15
1
SJ1-3523N
J16
1
Conn_01x06
J17 I2S_IN
1
Teensy supply select
JP1
1
MODE0
JP2
Show 18 more
QtyPartRefs
1
MODE1
JP3
1
BYPAS
JP4
1
OSC_DIS
JP5
1
TestPoint
TP1
1
SM4007PL
D1
2
22UF25V
22uF25V
C1, C2
7
10UF6.3V
10uF6.3V
C3, C4, C11, C12, C13, C18, C20
7
1UF25V
1uF25V
C5, C6, C24, C25, C26, C27, C30
8
100NF16V
100nF16V
C7, C8, C9, C10, C14, C17, C21, C22
2
10NF50V
10nF50V
C15, C16
2
2.2UF50V
2.2uF50V
C19, C23
2
2.2NF50V
2.2nF50V
C28, C29
7
470
R1, R2, R3, R4, R5, R14, R15
2
33
R6, R10
2
220
R7, R9
2
10K
10k
R8, R17
2
10
R11, R16
2
100
R12, R13

Audio board design files

The KiCad project lives in the stefvanson/audio-board repository on GitHub; these links point at the commit this page was built from.

Audio board: common questions

What microcontroller does the Audio board use?

The Audio board is built around the TEENSY4.0, from the NXP family.

How big is the Audio board?

The Audio board measures 100 × 100 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Audio board?

77 components, from 38 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 board design files?

From the stefvanson/audio-board repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the Audio board design in my own project?

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

Can I test firmware for the Audio board without the hardware?

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

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