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ProjOne

EvanDesR·STM32-devBoard

ProjOne PCB layout, top view — open source STM32 board by EvanDesR
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About the ProjOne PCB

ProjOne is an open source STM32 PCB design by EvanDesR, published on GitHub. It is a 2-layer board measuring 42.5 × 40.8 mm, with 29 components from 16 distinct parts.

Its main chip is the STM32F103C8T6, from the STM32 family. Other key parts include the AMS1117-3.3. By type, the board carries 13 capacitors, 5 connectors, 5 resistors, 2 ICs, 1 crystal and 1 switch.

It belongs with the dev boards & breakouts designs in this gallery.

From the project

STM32-F103 2 layer development board, featuring UART, SWD, I2C2, and USB breakouts. This project not only gave me a deeper apprieciation for the electrical math. I really was suprised by the incredibly fast, and cheap electronic manufacturing that consumers like myself, can access.

At one point I was considering electrical or computer hardware engineering as a degree, but I decided to just keep it a hobby. This is most recent/best hardware project.

ProjOne, from the project README
From the project README

Main components on the ProjOne

AMS1117-3.3STM32F103C8T6

ProjOne bill of materials (BOM)

29 components, 16 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
AMS1117-3.3
U1
1
STM32F103C8T6
U2
1
16MHz
Y1
4
Conn_01x04_Male
J1, J3, J4, J5
1
U254-051T-4BH81-S2S
J2
1
SW_SPDT
SW1
1
RED
D1
1
120R
FB1
2
22u
C1, C2
1
10u
C3
5
100n
C4, C5, C6, C7, C11
1
10n
C8
2
1u
C9, C10
2
8p
C12, C13
4
1k5
R1, R3, R4, R5
1
10k
R2

ProjOne design files

The KiCad project lives in the EvanDesR/STM32-devBoard repository on GitHub; these links point at the commit this page was built from.

ProjOne: common questions

What microcontroller does the ProjOne use?

The ProjOne is built around the STM32F103C8T6, from the STM32 family.

How big is the ProjOne PCB?

The ProjOne measures 42.5 × 40.8 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the ProjOne?

29 components, from 16 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 ProjOne design files?

From the EvanDesR/STM32-devBoard 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 ProjOne design in my own project?

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

Can I test firmware for the ProjOne 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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