Borsdorf
About the Borsdorf PCB
Borsdorf is an open source STM32 PCB design by Cutie-Club, published on GitHub under the CC-BY-SA-4.0 license. It is a 2-layer board measuring 314.3 × 95.3 mm, with 128 components from 21 distinct parts.
Its main chip is the STM32F072CBTx, from the STM32 family. Other key parts include the LP2985-3.3 and USBLC6-2P6. By type, the board carries 68 relays, 36 diodes, 12 capacitors, 5 resistors, 3 ICs and 1 transistor.
It belongs with the keyboards designs in this gallery.
From the project
KiCad project files for the Borsdorf keyboard.
Main components on the Borsdorf
Borsdorf bill of materials (BOM)
128 components, 21 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | STM32F072CBTx | LQFP-48_7x7mm_P0.5mm | U101 |
| 1 | LP2985-3.3 | SOT-23-5 | U102 |
| 1 | USBLC6-2P6 | SOT-23-6 | U103 |
| 1 | MBT2222A | SOT-23-3 | Q101 |
| 1 | USB2.0-USB-C | USB_C_Receptacle_HRO_TYPE-C-31-M-12 | J101 |
| 1 | PTTC | Fuse_0805_2012Metric | F101 |
| 67 | KEYSW | Alps_SKxx_19.05mm_1.0u | K101, K102, K103, K104, K105, K106, K107, K108 +59 |
| 1 | KEYSW | Alps_SKxx_LED_19.05mm_1.0u | K130 |
| 1 | ALPS SKRK | ALPS_SKRK | SW101 |
| 1 | 1N4148 | D_SOD-323 | D101 |
| 35 | BAV70 | SOT-23 | D102, D103, D104, D105, D106, D107, D108, D109 +27 |
| 4 | 100nF | C_0805_2012Metric | C101, C106, C108, C110 |
| 2 | 1uF | C_0805_2012Metric | C102, C109 |
| 2 | 4.7uF | C_0805_2012Metric | C103, C104 |
| 1 | 10uF | C_0805_2012Metric | C105 |
| 2 | 10nF | C_0805_2012Metric | C107, C111 |
| 1 | 2.2uF | C_0805_2012Metric | C112 |
| 2 | 5.1k | R_0805_2012Metric | R101, R104 |
| 1 | 1.5k | R_0805_2012Metric | R102 |
| 1 | 30k | R_0805_2012Metric | R103 |
Show 1 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | R_Small | R_0805_2012Metric | R105 |
Borsdorf design files
The KiCad project lives in the Cutie-Club/Borsdorf repository on GitHub; these links point at the commit this page was built from.
- Layoutborsdorf.kicad_pcb
- Schematicborsdorf.kicad_sch
Borsdorf: common questions
What microcontroller does the Borsdorf use?
The Borsdorf is built around the STM32F072CBTx, from the STM32 family.
How big is the Borsdorf PCB?
The Borsdorf measures 314.3 × 95.3 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Borsdorf?
128 components, from 21 distinct parts. The full bill of materials is listed on this page.
Where can I download the Borsdorf design files?
From the Cutie-Club/Borsdorf repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Borsdorf design in my own project?
Yes, under the terms of its CC-BY-SA-4.0 license, which Cutie-Club chose for the repository.
Can I test firmware for the Borsdorf 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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