HardLabs

.kicad

zehome·autoaudioswitcher

.kicad PCB layout, top view — open source board by zehome

About the .kicad PCB

.kicad is an open source PCB design by zehome, published on GitHub under the BSD-3-Clause license. It is a 2-layer board measuring 117 × 51 mm, with 63 components from 19 distinct parts.

Other key parts include the LM358, ADG409 and TC1044S. By type, the board carries 32 resistors, 10 capacitors, 6 ICs, 4 diodes and 2 connectors.

It belongs with the audio designs in this gallery.

From the project

OSHW: Automatic audio input switcher based on audio activity

Introduction ------------ With vintage amplifiers, you have limited input switching capabilities. And they are all manual. This projects aims to solve this problem.

I have an old kenwood KA-4002 (http://www.hifivintage.eu/product.php?id_product=476) which I love.

So, my solution to this problem, automatic audio input switcher. Basically, the system will detect which audio input has a signal, and switch to it using a solid state MUX.

.kicad, from the project README
From the project README

Main components on the .kicad

LM358ADG409TC1044S

.kicad bill of materials (BOM)

63 components, 19 distinct parts.

QtyPartRefs
4
LM358
U1, U2, U3, U4
1
ADG409
U5
1
TC1044S
U6
1
POWER
P1
1
TESTPWR
P2
1
INPUT1
JACK1
1
INPUT2
JACK2
1
INPUT3
JACK3
1
INPUT4
JACK4
1
OUTPUT1
JACKOUT1
4
100K
RV1, RV2, RV3, RV4
4
DIODE
D1, D2, D3, D4
4
10nF
C1, C2, C3, C4
2
10uF
C5, C6
4
100uF
C7, C8, C9, C10
12
10K
R1, R2, R3, R7, R10, R11, R12, R13 +4
8
1K
R4, R9, R18, R19, R20, R27, R28, R29
8
100K
R5, R8, R21, R22, R23, R30, R31, R32
4
15K
R6, R24, R25, R26

.kicad design files

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

.kicad: common questions

How big is the .kicad PCB?

The .kicad measures 117 × 51 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the .kicad?

63 components, from 19 distinct parts. The full bill of materials is listed on this page.

Where can I download the .kicad design files?

From the zehome/autoaudioswitcher repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the .kicad design in my own project?

Yes, under the terms of its BSD-3-Clause license, which zehome chose for the repository.

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