HardLabs

Hhkb

jinhwanlazy·hhkb-pcb

Hhkb PCB layout, top view — open source AVR/Arduino board by jinhwanlazy

About the Hhkb PCB

Hhkb is an open source AVR/Arduino PCB design by jinhwanlazy, published on GitHub. It is a 2-layer board measuring 101.9 × 285.8 mm, with 136 components from 16 distinct parts.

Its main chip is the ATMEGA32U4, from the AVR/Arduino family. By type, the board carries 60 diodes, 8 capacitors, 4 resistors, 1 IC, 1 crystal and 1 connector.

From the project

Yet another PCB for HHKB copy.

Main components on the Hhkb

ATMEGA32U4

Hhkb bill of materials (BOM)

136 components, 16 distinct parts.

QtyPartRefs
1
ATMEGA32U4
U1
1
XTAL_GND
X1
1
USB_mini_micro_B
J1
51
KEYSW
"0"1, "1"1, "2"1, "3"1, "4"1, "5"1, "6"1, "7"1 +43
4
KEYSW
BS1, L_CMD1, R_CMD1, TAB1
2
KEYSW
CTRL1, R_SHIFT1
2
KEYSW
L_SHIFT1, RET1
1
KEYSW
SPACEBAR1
1
SW_PUSH
SW1
60
D
D1:1, D1:2, D1:3, D1:4, D1:5, D1:6, D2:1, D2:2 +52
2
22p
C1, C2
4
0.1u
C3, C4, C5, C6
1
4.7u
C7
1
1u
C8
2
10k
R1, R2
2
22
R3, R4

Hhkb design files

The KiCad project lives in the jinhwanlazy/hhkb-pcb repository on GitHub; these links point at the commit this page was built from.

Hhkb: common questions

What microcontroller does the Hhkb use?

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

How big is the Hhkb PCB?

The Hhkb measures 101.9 × 285.8 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Hhkb?

136 components, from 16 distinct parts. The full bill of materials is listed on this page.

Where can I download the Hhkb design files?

From the jinhwanlazy/hhkb-pcb repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Hhkb design in my own project?

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

Can I test firmware for the Hhkb 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