HardLabs

Osfi p

SL-RU·osfi-p·sch/core/core.kicad_pcb

Osfi p PCB layout, top view — open source STM32 board by SL-RU

About the Osfi p PCB

Osfi p is an open source STM32 PCB design by SL-RU, published on GitHub. It is a 2-layer board measuring 44.8 × 72.5 mm, with 66 components from 41 distinct parts.

Its main chip is the STM32F427VITx, from the STM32 family. Other key parts include the LM3671-3.3, MCP73831-2-OT, USBLC6-4SC6, KXO-V97 and DW01-P. By type, the board carries 32 capacitors, 11 resistors, 10 connectors, 8 ICs, 1 transistor and 1 battery holder.

It belongs with the audio designs in this gallery.

From the project

Opensource Hi-Fi audio player

Main components on the Osfi p

STM32F427VITxLM3671-3.3MCP73831-2-OTUSBLC6-4SC6KXO-V97DW01-P8205

Osfi p bill of materials (BOM)

66 components, 41 distinct parts.

QtyPartRefs
1
STM32F427VITx
U1
1
LM3671-3.3
U2
1
MCP73831-2-OT
U3
1
USBLC6-4SC6
U4
2
KXO-V97
U5, U6
1
DW01-P
U7
1
8205
U8
1
BSS138
Q1
1
USB_B_Micro
J1
1
Reset
J2
1
V_3.3
J3
1
CHRG_OUT
J4
1
V_USB
J5
1
Conn_01x18
J6
1
Micro_SD_Card_Det
J7
1
Debug
J8
1
Conn_02x09_Odd_Even
J9
1
Conn_01x12
J10
1
Battery_Cell
BT1
1
MF-MSMF110
F1
Show 21 more
QtyPartRefs
1
2A
D1
1
2.2uH
L1
10
0.1u
C1, C4, C6, C8, C9, C10, C11, C13 +2
3
1u
C2, C5, C18
2
4.7u
C3, C7
8
10u
C12, C14, C16, C22, C28, C29, C34, C36
1
100n
C17
2
2.2u
C25, C26
1
20u
C27
2
10nF
C30, C31
2
30pF
C32, C33
1
0.1u
C35
1
22k
R1
1
2k
R2
1
100
R3
1
1k
R4
1
22k
R5
1
R_BACKLIGHT
R7
2
22k
R8, R9
2
510
R10, R11
1
22k
RN1

Osfi p design files

The KiCad project lives in the SL-RU/osfi-p repository on GitHub; these links point at the commit this page was built from.

Osfi p: common questions

What microcontroller does the Osfi p use?

The Osfi p is built around the STM32F427VITx, from the STM32 family.

How big is the Osfi p PCB?

The Osfi p measures 44.8 × 72.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Osfi p?

66 components, from 41 distinct parts. The full bill of materials is listed on this page.

Where can I download the Osfi p design files?

From the SL-RU/osfi-p repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Osfi p design in my own project?

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

Can I test firmware for the Osfi p 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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