HardLabs

Velvet-Pro-Solder

ShentoBento·Velvet-Pro-Solder-PCB·VP_Solder_KiCad/VP_Solder.kicad_pcb

Velvet-Pro-Solder PCB layout, top view — open source STM32 board by ShentoBento

About the Velvet-Pro-Solder PCB

Velvet-Pro-Solder is an open source STM32 PCB design by ShentoBento, published on GitHub. It is a 2-layer board measuring 280.7 × 95.2 mm, with 149 components from 16 distinct parts.

Its main chip is the STM32F072CBTX, from the STM32 family. Other key parts include the XC6206PXXXMR and USBLC6-2SC6. By type, the board carries 68 diodes, 9 capacitors, 3 ICs, 2 switches, 1 connector and 1 resistor.

It belongs with the keyboards designs in this gallery.

From the project

Solder PCB Made for the Velvet Pro Keyboard by AmperSandy, designed by ShentoBento

A solder PCB designed to fit the Velvet Pro keyboard by Ampersandy.

Firmware: https://github.com/ShentoBento/Velvet-Pro-PCB-Firmware

- Solder - MCU: STM32F072CBTx - JST SH 4-pin connector (for C3 Unified Daughterboards) - Fixed ANSI enter - Fixed 7u bottom row - Fixed split right shift - Stepped or full caps lock - Split or full backspace - VIA and Vial compatible (via the firmware linked above)

Main components on the Velvet-Pro-Solder

STM32F072CBTXXC6206PXXXMRUSBLC6-2SC6

Velvet-Pro-Solder bill of materials (BOM)

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

QtyPartRefs
1
STM32F072CBTX
STM32F072CBTx
U1
1
XC6206PXXXMR
XC6206PxxxMR
U2
1
USBLC6-2SC6
U3
1
CONN_01X04
Conn_01x04
J1
1
TestPoint
GND1
56
MX_SW_solder
KC_0, KC_1, KC_2, KC_3, KC_4, KC_5, KC_6, KC_7 +48
6
MX_SW_solder
KC_BSLS1, KC_LALT1, KC_LCTL1, KC_RALT1, KC_RCTL1, KC_TAB1
1
MX_SW_solder
KC_CAPS1
1
MX_SW_solder
KC_STEP1
2
SW_Push
SW1, SW2
68
1N4148
D1, D2, D3, D4, D5, D6, D7, D8 +60
5
100NF
100nF
C1, C2, C3, C4, C5
1
10UF
10uF
C6
2
1UF
1uF
C7, C8
1
0.1UF
0.1uF
C9
1
10K
10k
R1

Velvet-Pro-Solder design files

The KiCad project lives in the ShentoBento/Velvet-Pro-Solder-PCB repository on GitHub; these links point at the commit this page was built from.

Velvet-Pro-Solder: common questions

What microcontroller does the Velvet-Pro-Solder use?

The Velvet-Pro-Solder is built around the STM32F072CBTX, from the STM32 family.

How big is the Velvet-Pro-Solder PCB?

The Velvet-Pro-Solder measures 280.7 × 95.2 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Velvet-Pro-Solder?

149 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 Velvet-Pro-Solder design files?

From the ShentoBento/Velvet-Pro-Solder-PCB 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 Velvet-Pro-Solder design in my own project?

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

Can I test firmware for the Velvet-Pro-Solder 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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