Vaucasy left
About the Vaucasy left PCB
Vaucasy left is an open source STM32 PCB design by engemkeres, published on GitHub under the MIT license. It is a 2-layer board measuring 154 × 129.9 mm, with 105 components from 25 distinct parts.
Its main chip is the C116978, from the STM32 family. Other key parts include the C2827654, C5446 and C22459514. By type, the board carries 34 switches, 32 diodes, 17 capacitors, 11 resistors, 5 connectors and 4 ICs.
It belongs with the keyboards designs in this gallery.
From the project
Split ergonomic mechanical keyboard PCB
The MCU chosen for this project was an STM32F401RET6, because I was familiar with STM32s F4 series.
Own firmware with the support of ST's HAL library: in progress
Main components on the Vaucasy left
Vaucasy left bill of materials (BOM)
105 components, 25 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | C116978 STM32F401RET6 | LQFP-64_10x10mm_P0.5mm | U1 |
| 1 | C2827654 USBLC6-2SC6 | SOT-23-6 | U2 |
| 1 | C5446 XC6206 | SOT-23-3 | U3 |
| 1 | C22459514 TRRS | TRRS_PJ-320A | U4 |
| 1 | C7275083 8MHz | Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | C165948 USB_C | USB_C_Receptacle_HRO_TYPE-C-31-M-12 | J1 |
| 1 | C5248081 OLED_128x32 | OLED_128x32 | J2 |
| 1 | Trackball | PinHeader_1x05_P2.54mm_Vertical | J4 |
| 1 | HC-05 BT | PinSocket_1x06_P2.54mm_Vertical | J5 |
| 1 | DEBUG | PinHeader_1x04_P2.54mm_Vertical | J6 |
| 1 | C210357 500mA | Fuse_0603_1608Metric | F1 |
| 31 | Keyswitch | Hotswap_Choc_V1V2_1.00u | S1, S2, S3, S4, S5, S6, S7, S8 +23 |
| 1 | C221841 SW_SPDT | SW_SPDT_PCM12 | SW1 |
| 1 | C115351 SW_Push | Button_TL3342 | SW2 |
| 1 | C470788 RotaryEncoder_Switch | RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm | SW3 |
| 32 | C7420318 Diode | Diode_SOD-123 | D1, D2, D3, D4, D5, D6, D7, D8 +24 |
| 11 | C1525 100n | C_0402_1005Metric | C1, C2, C3, C4, C5, C7, C13, C14 +3 |
| 1 | C19702 10u | C_0603_1608Metric | C6 |
| 2 | C52923 1u | C_0402_1005Metric | C8, C9 |
| 2 | C1578 8p | C_0402_1005Metric | C10, C11 |
Show 5 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | C19666 4.7uF | C_0603_1608Metric | C12 |
| 4 | C25744 10k | R_0402_1005Metric | R1, R6, R7, R8 |
| 1 | C25076 100R | R_0402_1005Metric | R2 |
| 2 | C25905 5.1k | R_0402_1005Metric | R3, R4 |
| 4 | C25900 4.7k | R_0402_1005Metric | R9, R10, R13, R14 |
Vaucasy left design files
The KiCad project lives in the engemkeres/vaucasy repository on GitHub; these links point at the commit this page was built from.
Vaucasy left: common questions
What microcontroller does the Vaucasy left use?
The Vaucasy left is built around the C116978, from the STM32 family.
How big is the Vaucasy left PCB?
The Vaucasy left measures 154 × 129.9 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Vaucasy left?
105 components, from 25 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 Vaucasy left design files?
From the engemkeres/vaucasy 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 Vaucasy left design in my own project?
Yes, under the terms of its MIT license, which engemkeres chose for the repository.
Can I test firmware for the Vaucasy left 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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