HardLabs

Korris

yanghu·unicorne·choc/korris/korris.kicad_pcb

Korris PCB layout, top view — open source STM32 board by yanghu

About the Korris PCB

Korris is an open source STM32 PCB design by yanghu, published on GitHub under the MIT license. It is a 2-layer board measuring 264 × 87.1 mm, with 126 components from 27 distinct parts.

Its main chip is the STM32F072CBUx, from the STM32 family. Other key parts include the XC6206PxxxMR, MCP23017_SO and SRV05-4. By type, the board carries 47 diodes, 44 relays, 13 capacitors, 10 resistors, 4 ICs and 3 connectors.

It belongs with the keyboards and displays & leds designs in this gallery.

From the project

A one-piece 40% ortho keyboard design inspired by crkbd, Kyria and Ferris.

This is the keyboard design files for my own use, inspired by crkbd, Kyria and Ferris, as well as Reviung41 and others.

The name means "uni(single-piece)corne".

USB-C connector Audio buzzer Rotary encoder x 2 (optional) Underglow RGB LEDs x8 SMT32 MCU (STM32F411) OLED display Column stagger similar to Kyria. Corne-style thumb cluster with extra inner key: I feel Kyria's thumb cluster is too much and the outer column is hard to reach for me. * Thumb cluster shifted 0.25u to the middle.

Korris, from the project README
From the project README

Main components on the Korris

XC6206PxxxMRMCP23017_SOSTM32F072CBUxSRV05-4

Korris bill of materials (BOM)

126 components, 27 distinct parts.

QtyPartRefs
1
XC6206PxxxMR
U1
1
MCP23017_SO
U2
1
STM32F072CBUx
U3
1
SRV05-4
U4
1
MMBT3904
Q1
2
AudioJack4
J1, J3
1
USB_C
J2
1
JK-MSMD050
F1
44
KEYSW
K1, K2, K3, K4, K5, K6, K7, K8 +36
1
SW_Push
SW1
2
Rotary_Encoder_Switch
SW2, SW3
44
D
D1, D2, D3, D4, D5, D6, D7, D8 +36
1
1N4148
D45
1
SS14
D46
1
SMF9.0CA
D47
2
10uF
C1, C13
6
0.1uF
C2, C5, C6, C7, C8, C10
3
1uF
C3, C4, C12
2
4.7uF
C9, C11
1
1M
R1
Show 7 more
QtyPartRefs
1
330k
R2
1
100
R3
1
2.2k
R4
1
47k
R5
1
10k
R6
2
5.1k
R7, R8
2
4.7k
R9, R10

Korris design files

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

Korris: common questions

What microcontroller does the Korris use?

The Korris is built around the STM32F072CBUx, from the STM32 family.

How big is the Korris PCB?

The Korris measures 264 × 87.1 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Korris?

126 components, from 27 distinct parts. The full bill of materials is listed on this page.

Where can I download the Korris design files?

From the yanghu/unicorne repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Korris design in my own project?

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

Can I test firmware for the Korris 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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