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Fin prototype

Helios-Rocket·fin-strain-gauge·Hardware/fin-prototype/fin-prototype.kicad_pcb

Fin prototype PCB layout, top view — open source STM32 board by Helios-Rocket

About the Fin prototype PCB

Fin prototype is an open source STM32 PCB design by Helios-Rocket, published on GitHub. It is a 4-layer board measuring 50 × 50 mm, with 84 components from 26 distinct parts.

Its main chip is the STM32L412C8Tx, from the STM32 family. Other key parts include the ADS131M03QPWRQ1, W25N512GVEIG, TMP235A4DBZR and FT232RNQ-REEL. By type, the board carries 25 test points, 18 connectors, 16 resistors, 13 capacitors, 5 ICs and 5 diodes.

Main components on the Fin prototype

ADS131M03QPWRQ1STM32L412C8TxW25N512GVEIGTMP235A4DBZRFT232RNQ-REEL

Fin prototype bill of materials (BOM)

84 components, 26 distinct parts.

QtyPartRefs
1
ADS131M03QPWRQ1
U1
1
STM32L412C8Tx
U2
1
W25N512GVEIG
U3
1
TMP235A4DBZR
U4
1
FT232RNQ-REEL
U5
1
USB_C_Receptacle_USB2.0_16P
J1
2
Conn_01x04_Pin
J2, J3
1
Conn_01x08_Pin
J4
1
Conn_01x04_Pin
J5
13
Conn_01x01_Pin
J6, J7, J8, J9, J10, J11, J12, J13 +5
2
SW_Push
SW1, SW2
4
TestPoint
TP1, TP2, TP3, TP4
4
TestPoint
TP5, TP6, TP7, TP8
17
TestPoint
TP9, TP10, TP11, TP12, TP13, TP14, TP15, TP16 +9
4
LED
D1, D2, D3, D4
1
DFLS160-7
D5
3
10 nF
C1, C3, C5
7
100nF
C2, C6, C7, C8, C9, C12, C13
2
1 uF
C4, C10
1
220 nF
C11
Show 6 more
QtyPartRefs
1
10 k
R1
1
5K
R2
4
2.5 k
R3, R4, R5, R6
4
220
R7, R8, R9, R10
4
1 k
R11, R12, R13, R14
2
5.1k
R15, R16

Fin prototype design files

The KiCad project lives in the Helios-Rocket/fin-strain-gauge repository on GitHub; these links point at the commit this page was built from.

Fin prototype: common questions

What microcontroller does the Fin prototype use?

The Fin prototype is built around the STM32L412C8Tx, from the STM32 family.

How big is the Fin prototype PCB?

The Fin prototype measures 50 × 50 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Fin prototype?

84 components, from 26 distinct parts. The full bill of materials is listed on this page.

Where can I download the Fin prototype design files?

From the Helios-Rocket/fin-strain-gauge repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Fin prototype design in my own project?

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

Can I test firmware for the Fin prototype 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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