HardLabs

Version1

NeerajR18·version1·PCB/version1.kicad_pcb

Version1 PCB layout, top view — open source STM32 board by NeerajR18

About the Version1 PCB

Version1 is an open source STM32 PCB design by NeerajR18, published on GitHub. It is a 2-layer board measuring 395 × 135 mm, with 210 components from 22 distinct parts.

Its main chip is the STM32F072CBT6, from the STM32 family. Other key parts include the XC6206P332MR-G. By type, the board carries 93 diodes, 10 capacitors, 8 switches, 3 resistors, 2 ICs and 2 connectors.

It belongs with the keyboards designs in this gallery.

From the project

version1 is a TKL(TenKeyLess) Mechanical Keyboard with Kalih Hotswappable sockets and Cherry MX Black switches.

version1 is a TKL(TenKeyLess) Mechanical Keyboard with Kalih Hotswappable sockets and Cherry MX Black switches.

The keyboard features a fully custom made PCB with 87 standard TKL keys and 4 macrokeys. The keyboard is wired, using a USB-C port. version1 uses the STM32F072CBT6 at its core.

The PCB was designed in KiCad and the case was designed in Autodesk Fusion. Fusion was also used to render images of the design. The footprints for the switches have been taken from the marbastlib library - https://github.com/ebastler/marbastlib

Version1, from the project README
From the project README

Main components on the Version1

STM32F072CBT6XC6206P332MR-G

Version1 bill of materials (BOM)

210 components, 22 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
STM32F072CBT6
STM32F072CBTx
U1
1
XC6206P332MR-G
XC6206PxxxMR
U2
1
C2765186
USB_C_Receptacle_USB2.0_16P
J1
1
Conn_01x04_Pin
J2
1
1206L050YR
Polyfuse
F1
81
CPG151101S11-2
MX_SW_HS
MX1, MX2, MX3, MX4, MX5, MX6, MX7, MX8 +73
2
CPG151101S11-2
MX_SW_HS
MX34, MX47
1
CPG151101S11-2
MX_SW_HS
MX51
7
CPG151101S11-2
MX_SW_HS
MX77, MX78, MX79, MX81, MX82, MX83, MX84
1
MX_stab
S1
2
MX_stab
S2, S3
1
MX_stab
S4
1
MX_stab
S5
2
TS-1088-AR02016
SW_SPST
SW1, SW2
1
EC11E15244B2
RotaryEncoder_Switch
SW3
1
PRTR5V0U2X-ES
PRTR5V0U2X
D1
92
1N4148W
D
D2, D3, D4, D5, D6, D7, D8, D9 +84
7
CC0402KRX7R7BB104
100nF
C1, C4, C5, C6, C7, C8, C10
2
CL10B105KA8NNNC
1uF
C2, C3
1
CL10A106KP8NNNC
10uF
C9
Show 2 more
QtyPartRefs
2
RC0402FR-075K1L
5k1
R1, R2
1
RC0402FR-0710KL
10k
R3

Version1 design files

The KiCad project lives in the NeerajR18/version1 repository on GitHub; these links point at the commit this page was built from.

Version1: common questions

What microcontroller does the Version1 use?

The Version1 is built around the STM32F072CBT6, from the STM32 family.

How big is the Version1 PCB?

The Version1 measures 395 × 135 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Version1?

210 components, from 22 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 Version1 design files?

From the NeerajR18/version1 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 Version1 design in my own project?

The repository has no license, so all rights stay with NeerajR18. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Version1 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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