HardLabs

Keyboard

ataradov·keyboard·hw/keyboard.kicad_pcb

Keyboard PCB layout, top view — open source Microchip SAM board by ataradov

About the Keyboard PCB

Keyboard is an open source Microchip SAM PCB design by ataradov, published on GitHub under the BSD-3-Clause license. It is a 2-layer board measuring 348.4 × 110.2 mm, with 252 components from 26 distinct parts.

Its main chip is the ATSAMD11C, from the Microchip SAM family. Other key parts include the NCA9555PW, MIC5504 and TL1963A. By type, the board carries 92 LEDs, 89 switches, 39 resistors, 13 capacitors, 9 ICs and 7 connectors.

It belongs with the keyboards designs in this gallery.

From the project

Custom keyboard

This is a keyboard I made for myself after Matias discontinued my favorite keyboard (FK308PC). I could not find a reasonable replacement, so I decided to just make my own.

The goals were: Tenkeyless, but otherwise standard layout. As low profile as possible. As quiet as possible. Single color static dim backlight. Minimal or no space between Escape and F-keys. Firmware I control, so I could modify it as needed.

Keyboard, from the project README
From the project README

Main components on the Keyboard

NCA9555PWMIC5504ATSAMD11CTL1963A

Keyboard bill of materials (BOM)

252 components, 26 distinct parts.

QtyPartRefs
6
NCA9555PW
IC1, IC3, IC5, IC6, IC7, IC9
1
MIC5504
IC2
1
ATSAMD11C
IC4
1
TL1963A
IC8
1
NTR4503N
Q1
1
NTR4502P
Q2
1
VBUS
J1
1
D+ (G)
J2
1
D- (W)
J3
2
GND
J4, J7
1
Debug
J5
1
DBG
J6
89
TactSwitch
SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 +81
3
Green
ALED1, ALED2, ALED3
89
White
LED1, LED2, LED3, LED4, LED5, LED6, LED7, LED8 +81
1
ESDALD05UD4
D1
9
1uF
C1, C2, C3, C8, C9, C10, C11, C12 +1
3
10uF
C4, C5, C7
1
100nF
C6
2
3.3K
R1, R2
Show 6 more
QtyPartRefs
1
100
R3
2
100K
R4, R5
6
TBD
R6, R7, R9, R10, R11, R12
2
0
R8, R13
3
1K
R14, R15, R16
23
100
RN1, RN2, RN3, RN4, RN5, RN6, RN7, RN8 +15

Keyboard design files

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

Keyboard: common questions

What microcontroller does the Keyboard use?

The Keyboard is built around the ATSAMD11C, from the Microchip SAM family.

How big is the Keyboard PCB?

The Keyboard measures 348.4 × 110.2 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Keyboard?

252 components, from 26 distinct parts. The full bill of materials is listed on this page.

Where can I download the Keyboard design files?

From the ataradov/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 Keyboard design in my own project?

Yes, under the terms of its BSD-3-Clause license, which ataradov chose for the repository.

Can I test firmware for the Keyboard without the hardware?

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

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