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OTTOdac

cester-ino·OTTO-hardware·OTTO-dac/OTTOdac.kicad_pcb

OTTOdac PCB layout, top view — open source board by cester-ino
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About the OTTOdac PCB

OTTOdac is an open source PCB design by cester-ino, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 38.8 × 66.6 mm, with 38 components from 20 distinct parts.

Other key parts include the AMS1117-3.3, SGTL5000 and LM4860. By type, the board carries 19 capacitors, 8 resistors, 5 connectors, 3 ICs, 1 crystal and 1 microphone.

It belongs with the audio and power & battery designs in this gallery.

From the project

those specs refer to the tactile buttons version, but a led backlight button version is in the works too.

OTTOdac, from the project README
From the project README

Main components on the OTTOdac

AMS1117-3.3SGTL5000LM4860

OTTOdac bill of materials (BOM)

38 components, 20 distinct parts.

QtyPartRefs
1
AMS1117-3.3
U1
1
SGTL5000
U2
1
LM4860
U3
1
XO32
X1
1
Conn_01x10
J1
1
Audio_IN
J2
1
Audio_OUT
J3
1
SJ1-42536-SMT
J4
1
Speaker
J5
1
Microphone
MK1
1
600
L1
8
2.2uf
C1, C6, C7, C9, C12, C14, C15, C16
6
0.1uf
C2, C3, C4, C5, C8, C10
2
220uf
C11, C13
1
1uf
C17
2
0.1uf
C18, C19
1
2.2K
R3
3
1K
R4, R5, R6
2
100K
R7, R8
2
10K
R9, R10

OTTOdac design files

The KiCad project lives in the cester-ino/OTTO-hardware repository on GitHub; these links point at the commit this page was built from.

OTTOdac: common questions

How big is the OTTOdac PCB?

The OTTOdac measures 38.8 × 66.6 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the OTTOdac?

38 components, from 20 distinct parts. The full bill of materials is listed on this page.

Where can I download the OTTOdac design files?

From the cester-ino/OTTO-hardware repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the OTTOdac design in my own project?

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

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