HardLabs

SEGMENT-60

slonket·segment-keyboard·segment_60_PCB/segment_60_PCB.kicad_pcb

SEGMENT-60 PCB layout, top view — open source AVR/Arduino board by slonket

About the SEGMENT-60 PCB

SEGMENT-60 is an open source AVR/Arduino PCB design by slonket, published on GitHub under the MIT license. It is a 2-layer board measuring 285.8 × 133.4 mm, with 119 components from 28 distinct parts.

Its main chip is the ATmega328P-PU, from the AVR/Arduino family. Other key parts include the 74HC138 and 74HC365. By type, the board carries 67 switches, 20 capacitors, 17 ICs, 9 resistors, 4 diodes and 1 crystal.

It belongs with the keyboards designs in this gallery.

From the project

A through-hole keyboard kit themed after PCB's of the 1980's.

SEGMENT is a 60% form factor keyboard featuring only through-hole components, drawing design inspiration from PCB's of the 1980s. This project is still in the early stages of design and testing.

Main components on the SEGMENT-60

ATmega328P-PU74HC13874HC365

SEGMENT-60 bill of materials (BOM)

119 components, 28 distinct parts.

QtyPartRefs
1
ATmega328P-PU
U1
2
74HC138
U2, U3
14
74HC365
U4, U5, U6, U7, U8, U9, U10, U11 +6
1
16MHz
Y1
1
BREAKOUT
J1
51
SW_Push_45deg
SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 +43
1
SW_Push_45deg
SW14
5
SW_Push_45deg
SW15, SW57, SW59, SW63, SW65
1
SW_Push_45deg
SW29
1
SW_Push_45deg
SW41
1
SW_Push_45deg
SW42
1
SW_Push_45deg
SW43
1
SW_Push_45deg
SW55
2
SW_Push_45deg
SW60, SW62
1
SW_Push_45deg
SW61
2
SW_Push
SW66, SW67
2
3.6V
D1, D2
2
LED
D3, D4
1
100n
C1
2
22p
C2, C3
Show 8 more
QtyPartRefs
1
4.7u
C4
16
100n
C5, C6, C7, C8, C9, C10, C11, C12 +8
1
1.5k
R1
2
75R
R2, R3
2
4.7k
R4, R5
1
10k
R6
2
220R
R7, R8
1
10k
RN1

SEGMENT-60 design files

The KiCad project lives in the slonket/segment-keyboard repository on GitHub; these links point at the commit this page was built from.

SEGMENT-60: common questions

What microcontroller does the SEGMENT-60 use?

The SEGMENT-60 is built around the ATmega328P-PU, from the AVR/Arduino family.

How big is the SEGMENT-60 PCB?

The SEGMENT-60 measures 285.8 × 133.4 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the SEGMENT-60?

119 components, from 28 distinct parts. The full bill of materials is listed on this page.

Where can I download the SEGMENT-60 design files?

From the slonket/segment-keyboard repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the SEGMENT-60 design in my own project?

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

Can I test firmware for the SEGMENT-60 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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