HardLabs

Sphale

siderakb·sphale

Sphale PCB layout, top view — open source STM32 board by siderakb

About the Sphale PCB

Sphale is an open source STM32 PCB design by siderakb, published on GitHub under the MIT license. It is a 2-layer board measuring 17.8 × 33 mm, with 29 components from 19 distinct parts.

Its main chip is the STM32F303CCTx, from the STM32 family. Other key parts include the RT9013-33GB. By type, the board carries 12 capacitors, 5 resistors, 4 connectors, 2 ICs, 2 switches and 1 crystal.

It belongs with the keyboards designs in this gallery.

From the project

Pro Micro/Proton C compatible STM32F303 board with USB-C, 1 LED and 23 Pins

Pro Micro/Proton C compatible STM32F303CC board, specialized design for QMK keyboards.

- Copper layer count: 2 - Board thickness: 1.6 mm - Board overall dimensions: 17.78 x 33.02 mm (0.7 x 1.3 inch) - Min track/spacing: 0.13 mm / 0.13 mm - Min hole diameter: 0.3 mm - Castellated pads: No - Edge card connectors: No - Plated board edge: No

These files are provided without warranty of any kind. Including but not limited to manufacturing, assembly, procurement and use at your own risk. It is recommended to check yourself before use.

Sphale, from the project README
From the project README

Main components on the Sphale

STM32F303CCTxRT9013-33GB

Sphale bill of materials (BOM)

29 components, 19 distinct parts.

QtyPartRefs
1
STM32F303CCTx
U1
1
RT9013-33GB
U2
1
8MHz
Y1
2
Conn_01x12
J1, J2
1
Conn_01x05
J3
1
USB_C_Receptacle_USB2.0
J4
1
500mA 6V
F1
1
RESET
SW1
1
BOOT
SW2
1
Red
LD1
1
1N5817
D1
1
10uF
C1
5
100nF
C2, C3, C4, C5, C8
1
10nF
C6
3
1uF
C7, C11, C12
2
12pF
C9, C10
1
1.5k
R1
1
10k
R2
3
5.1k
R3, R4, R5

Sphale design files

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

Sphale: common questions

What microcontroller does the Sphale use?

The Sphale is built around the STM32F303CCTx, from the STM32 family.

How big is the Sphale PCB?

The Sphale measures 17.8 × 33 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Sphale?

29 components, from 19 distinct parts. The full bill of materials is listed on this page.

Where can I download the Sphale design files?

From the siderakb/sphale repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Sphale design in my own project?

Yes, under the terms of its MIT license, which siderakb chose for the repository.

Can I test firmware for the Sphale 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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