HardLabs

Kyuu

Quantrik·Kyuu·PCB/Kyuu.kicad_pcb

Kyuu PCB layout, top view — open source AVR/Arduino board by Quantrik

About the Kyuu PCB

Kyuu is an open source AVR/Arduino PCB design by Quantrik, published on GitHub under the CC-BY-NC-4.0 license. It is a 2-layer board measuring 303.6 × 96.2 mm, with 153 components from 21 distinct parts.

Its main chip is the ATMEGA32U4, from the AVR/Arduino family. By type, the board carries 68 relays, 66 diodes, 8 capacitors, 6 resistors, 1 IC and 1 crystal.

It belongs with the keyboards designs in this gallery.

From the project

Kyuu Keyboard Design

Main components on the Kyuu

ATMEGA32U4

Kyuu bill of materials (BOM)

153 components, 21 distinct parts.

QtyPartRefs
1
ATMEGA32U4
U1
1
XTAL_GND
X1
56
KEYSW
K0, K1, K2, K3, K4, K5, K6, K7 +48
1
KEYSW
K13
5
KEYSW
K15, K28, K57, K59, K61
2
KEYSW
K29, K54
1
KEYSW
K29_1
1
KEYSW
K41
1
KEYSW
K43
1
KEYSW
K60
1
KEYSW
KOOPS1
1
SW_PUSH
SW1
1
HRO-TYPE-C-31-M-12
USB1
66
D
D1, D2, D3, D4, D5, D6, D7, D8 +58
4
0.1u
C1, C2, C3, C4
1
4.7u
C5
1
1u
C6
2
C_Small
C7, C8
2
5.5k
R1, R2
2
22
R3, R4
Show 1 more
QtyPartRefs
2
10k
R5, R6

Kyuu design files

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

Kyuu: common questions

What microcontroller does the Kyuu use?

The Kyuu is built around the ATMEGA32U4, from the AVR/Arduino family.

How big is the Kyuu PCB?

The Kyuu measures 303.6 × 96.2 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Kyuu?

153 components, from 21 distinct parts. The full bill of materials is listed on this page.

Where can I download the Kyuu design files?

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

Can I use the Kyuu design in my own project?

It is published under CC-BY-NC-4.0, which limits how it may be reused; read the license before building on it.

Can I test firmware for the Kyuu without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug AVR/Arduino firmware against it before you order a PCB.

Similar boards