HardLabs

Skeleton68

skeletonkbd·Skeleton68·Skeleton68_backlit/Skeleton68.kicad_pcb

Skeleton68 PCB layout, top view — open source AVR/Arduino board by skeletonkbd

About the Skeleton68 PCB

Skeleton68 is an open source AVR/Arduino PCB design by skeletonkbd, published on GitHub under the MIT license. It is a 2-layer board measuring 336.6 × 121.7 mm, with 224 components from 22 distinct parts.

Its main chip is the ATmega32U4-M, from the AVR/Arduino family. Other key parts include the PRTR5V0U2X. By type, the board carries 68 switches, 68 LEDs, 68 diodes, 8 capacitors, 6 resistors and 2 ICs.

Skeleton68, from the project README
From the project README

Main components on the Skeleton68

ATmega32U4-MPRTR5V0U2X

Skeleton68 bill of materials (BOM)

224 components, 22 distinct parts.

QtyPartRefs
1
ATmega32U4-M
U1
1
PRTR5V0U2X
U2
1
Crystal_GND24
Y1
1
USB_C_Receptacle_USB2.0
J1
1
500mA
F1
55
SW_PUSH
SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 +47
1
SW_PUSH
SW14
6
SW_PUSH
SW16, SW29, SW59, SW60, SW64, SW65
2
SW_PUSH
SW31, SW57
2
SW_PUSH
SW43, SW45
1
SW_PUSH
SW61
1
SW_PUSH
SW63
1
SW_PUSH
SW_69
68
YS-SK6812MINI-E
LED1, LED2, LED3, LED4, LED5, LED6, LED7, LED8 +60
68
D_Small
D1, D2, D3, D4, D5, D6, D7, D8 +60
2
22p
C1, C2
1
1u
C3
4
0.1u
C4, C5, C6, C7
1
10u
C8
2
5.1k
R1, R2
Show 2 more
QtyPartRefs
2
22
R3, R5
2
10k
R4, R6

Skeleton68 design files

The KiCad project lives in the skeletonkbd/Skeleton68 repository on GitHub; these links point at the commit this page was built from.

Skeleton68: common questions

What microcontroller does the Skeleton68 use?

The Skeleton68 is built around the ATmega32U4-M, from the AVR/Arduino family.

How big is the Skeleton68 PCB?

The Skeleton68 measures 336.6 × 121.7 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Skeleton68?

224 components, from 22 distinct parts. The full bill of materials is listed on this page.

Where can I download the Skeleton68 design files?

From the skeletonkbd/Skeleton68 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Skeleton68 design in my own project?

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

Can I test firmware for the Skeleton68 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.

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