HardLabs

Io daughterboard

Jaxc·Magna·PCB/Magna/io_daughterboard/io_daughterboard.kicad_pcb

Io daughterboard PCB layout, top view — open source STM32 board by Jaxc

About the Io daughterboard PCB

Io daughterboard is an open source STM32 PCB design by Jaxc, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 240 × 315 mm, with 223 components from 31 distinct parts.

Its main chip is the STM32F730V8T6, from the STM32 family. Other key parts include the 74HC595, CY2305SXC-1HT, WM8782SEDS, CS4344 and NE5532. By type, the board carries 81 resistors, 40 diodes, 30 capacitors, 19 test points, 16 switches and 12 ICs.

It belongs with the audio designs in this gallery.

Main components on the Io daughterboard

74HC595CY2305SXC-1HTWM8782SEDSCS4344NE5532STM32F730V8T64052

Io daughterboard bill of materials (BOM)

223 components, 31 distinct parts — part numbers from the project's BOM.

QtyPartRefs
3
74HC595
U201, U204, U205
2
CY2305SXC-1HT
74HC595
U202, U203
1
WM8782SEDS
XL9535
U301
2
CS4344
NE5532
U501, U601
2
NE5532
4052
U502, U602
1
STM32F730V8T6
NE5532
U701
1
4052
U702
1
Conn_02x10_Counter_Clockwise
J101
1
10K
10k/PTV09A-4030F-B103
RV401
10
10k/PTV09A-4030F-B103
RV402, RV403, RV404, RV405, RV406, RV413, RV414, RV416 +2
10
10k/PTV09A-4230F-B103
RV407, RV408, RV410, RV411, RV412, RV418, RV419, RV420 +2
2
10k/ PTA6043-2015DPB103
RV409, RV424
1
10k/PTV09A-2030F-B103
RV415
16
~
SW301, SW302, SW303, SW304, SW305, SW306, SW307, SW308 +8
19
TestPoint
TP201, TP202, TP203, TP204, TP205, TP206, TP301, TP302 +11
4
Red
D201, D209, D217, D240
14
yellow
D202, D203, D204, D210, D211, D212, D218, D219 +6
17
green
D205, D206, D207, D208, D213, D214, D215, D216 +9
5
White
D226, D227, D232, D233, D239
14
22uF/25V
C101, C102, C201, C202, C203, C204, C205, C311 +6
Show 11 more
QtyPartRefs
6
10UF/25V
22uF/25V
C301, C302, C304, C307, C309, C310
6
100NF/16V
22uF/25V
C303, C305, C306, C308, C501, C601
2
1UF/50V
22uF/25V
C502, C602
2
2.2UF/6.3V
22uF/25V
C701, C702
35
220R
R201, R202, R203, R204, R205, R206, R207, R208 +27
5
1k5
R226, R227, R232, R233, R239
2
5K1
5k1
R301, R302
17
10k
R303, R304, R305, R306, R307, R312, R313, R314 +9
16
1k
R308, R309, R310, R311, R316, R317, R318, R319 +8
4
10K
22R
R501, R502, R601, R602
2
22R
R701, R702

Io daughterboard design files

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

Io daughterboard: common questions

What microcontroller does the Io daughterboard use?

The Io daughterboard is built around the STM32F730V8T6, from the STM32 family.

How big is the Io daughterboard PCB?

The Io daughterboard measures 240 × 315 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Io daughterboard?

223 components, from 31 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 Io daughterboard design files?

From the Jaxc/Magna 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 Io daughterboard design in my own project?

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

Can I test firmware for the Io daughterboard without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.

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