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SDA-Wonder System Board

stanislavbrtna·SDA_Wonder_HW·Board/timekillerXtreme/timekillerXtreme.kicad_pcb

SDA-Wonder System Board layout, top view — open source STM32 board by stanislavbrtna
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About the SDA-Wonder System Board

SDA-Wonder System Board is an open source STM32 PCB design by stanislavbrtna, published on GitHub. It is a 2-layer board measuring 61.5 × 105.3 mm, with 86 components from 49 distinct parts.

Its main chip is the STM32F407VGT6, from the STM32 family. Other key parts include the MCP73831, FT230XS-R, NCP1529, TLV431 and USBLC6. By type, the board carries 30 capacitors, 24 resistors, 9 ICs, 8 switches, 6 connectors and 3 diodes.

From the project

Hardware part of the SDA Project.

1. SD card slot casing is not grounded on the pcb, sd card insertion detection doesn't work because of it. This can be fixed by scraping off the protective mask near the pin and bridging ground and shielding with a bit of solder. 2. Pads for battery connector are too small and can be ripped out of place when device falls form sufficient height. This is sort-of fixed with second revision of the case by giving the battery better support. 3. The stacked PCBs are a point of failure, stress is built up in the connecting pins during soldering. This stress can break the contacts after few years of…

Main components on the SDA-Wonder System Board

MCP73831FT230XS-RNCP1529TLV431STM32F407VGT6USBLC6AOZ1310

SDA-Wonder System Board bill of materials (BOM)

86 components, 49 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
MCP73831
U1
1
FT230XS-R
U2
1
NCP1529
U3
1
TLV431
U4
1
STM32F407VGT6
U5
3
USBLC6
U6, U8, U9
1
AOZ1310
U7
1
IRLML6302
Q1
1
PMBT3904.215
Q2
1
32.768 KHz
Y1
1
16MHZ
16MHz
Y2
1
Battery
J1
1
USB_OTG
J2
1
Conn_Bottom_Expansion
J3
1
Conn_LCD_Board
J5
1
uSD
J6
1
CONN_01X03
J13
1
1A
F1
1
PWR
SW1
1
A
SW2
Show 29 more
QtyPartRefs
1
B
SW3
1
LEFT
SW4
1
RIGHT
SW5
1
DOWN
SW6
1
UP
SW7
1
RST
SW8
1
CHRG_LED
D1
1
1N4148
D2
1
SYS_LED
D4
1
4.7UH
4.7uH
L1
2
47P
47p
C1, C2
4
4.7U
4.7u
C3, C4, C18, C30
12
100N
100n
C5, C7, C8, C13, C15, C16, C19, C20 +4
2
47U
47u
C6, C17
2
3.3P
3.3p
C9, C10
2
8.2P
8.2p
C11, C12
5
2.2U
2.2u
C14, C21, C22, C29, C33
1
100U
100u
C24
4
10K
10k
R1, R12, R13, R24
3
15K
15k
R2, R14, R15
2
27R
R3, R4
1
2k
R5
1
470R
R6
5
47K
47k
R7, R20, R21, R22, R23
1
680K
R8
1
150K
R9
4
0
R10, R11, R17, R18
1
220
R16
1
0
R19

SDA-Wonder System Board design files

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

SDA-Wonder System Board: common questions

What microcontroller does the SDA-Wonder System Board use?

The SDA-Wonder System Board is built around the STM32F407VGT6, from the STM32 family.

How big is the SDA-Wonder System Board?

The SDA-Wonder System Board measures 61.5 × 105.3 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the SDA-Wonder System Board?

86 components, from 49 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 SDA-Wonder System Board design files?

From the stanislavbrtna/SDA_Wonder_HW repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the SDA-Wonder System Board design in my own project?

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

Can I test firmware for the SDA-Wonder System Board 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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