HardLabs

Clavier

lsartory·Clavier·PCB/clavier.kicad_pcb

Clavier PCB layout, top view — open source FPGA board by lsartory

About the Clavier PCB

Clavier is an open source FPGA PCB design by lsartory, published on GitHub under the Custom license license. It is a 4-layer board measuring 431.5 × 125.5 mm, with 223 components from 43 distinct parts.

Its main chip is the LFE5U-25F-6BG256C, from the FPGA family. Other key parts include the TPESD0594PA, TLV62569DBVR, GL852G-OHY60, CH347F and W25Q128JVSIQ. By type, the board carries 107 switches, 40 capacitors, 32 resistors, 19 ICs, 10 connectors and 7 diodes.

It belongs with the keyboards and usb & debug tools designs in this gallery.

From the project

An FPGA-based mechanical keyboard with an integrated USB hub and communication interfaces

Clavier (French for ‘keyboard’) is an FPGA-based mechanical keyboard with an integrated USB hub, and numerous communication interfaces (JTAG, SPI, I²C, UART).

- Full size 105 keys ISO keyboard + one extra - Compatible with PCB mounted Cherry MX switches - N-key rollover - 1000 Hz polling rate - No multiplexing, no ghosting - 2-port USB 2.0 hub - JTAG, SPI, I²C, 2 × UART, and 8 × GPIOs - FPGA-based, VHDL only, no ALU - Fully open-source, including all design tools (see below)

Clavier, from the project README
From the project README

Main components on the Clavier

TPESD0594PATLV62569DBVRGL852G-OHY60CH347FLFE5U-25F-6BG256CW25Q128JVSIQ

Clavier bill of materials (BOM)

223 components, 43 distinct parts.

QtyPartRefs
12
TPESD0594PA
U1, U2, U3, U4, U5, U9, U10, U11 +4
3
TLV62569DBVR
U6, U7, U8
1
GL852G-OHY60
U16
1
CH347F
U17
1
LFE5U-25F-6BG256C
U18
1
W25Q128JVSIQ
U19
1
TAXM8M4RDBCCT2T
8MHz
Y1
2
CO22H4-12.000-WPGDTSNL
12MHz
Y2, Y3
6
ZX-PZ2.54-2-4PZZ
Pin header, 2x4
J1, J2, J3, J4, J5, J6
1
918-418K2023S40001
J7
1
ZX-PZ2.54-1-4PWZ
Pin header, 1x4
J8
2
901-211A1021D10100
J9, J10
1
BSMD0805-075-12V
Polyfuse
F1
89
~
SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 +81
1
DSIC01LS-P
SW18
2
~
SW32, SW106
1
~
SW40
1
~
SW59
2
~
SW60, SW94
1
~
SW61
Show 23 more
QtyPartRefs
8
~
SW77, SW95, SW96, SW97, SW99, SW100, SW101, SW102
1
~
SW89
1
~
SW98
6
XL-1608UOC-06
LED
D1, D2, D3, D4, D5, D6
1
SD05C-7
D7
4
DFE322520FD-2R2M=P2
2.2µH
L1, L2, L3, L4
10
GRM21BR61E226ME44L
22µF
C1, C2, C3, C4, C5, C6, C7, C8 +2
3
GRM21BR61H106KE43L
10µF
C11, C12, C13
17
GRM155R61H105KE05D
1µF
C14, C16, C17, C19, C20, C22, C24, C25 +9
8
GRM155R71H104KE14D
100nF
C15, C21, C29, C30, C32, C34, C36, C39
2
GRM1555C1H200JA01D
20pF
C18, C23
7
RC0402FR-072K55L
2.55kΩ
R1, R2, R3, R4, R5, R6, R13
2
RC0402FR-075K1L
5.1kΩ
R7, R8
1
RE0402DRE071KL
1kΩ
R9
8
RE0402DRE0710KL
10kΩ
R10, R11, R12, R23, R24, R25, R29, R32
1
RC0402FR-0711K5L
11.5kΩ
R14
2
RC0402FR-071K5L
1.5kΩ
R15, R31
1
RC0402FR-074K75L
4.75kΩ
R16
1
RT0402BRD071K65L
1.65kΩ
R17
1
RT0402CRE071K37L
1.37kΩ
R18
6
RE0402DRE07100KL
100kΩ
R19, R20, R21, R22, R26, R27
1
RE0402DRE0747KL
47kΩ
R28
1
RC0402FR-07680RL
680Ω
R30

Clavier design files

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

Clavier: common questions

What microcontroller does the Clavier use?

The Clavier is built around the LFE5U-25F-6BG256C, from the FPGA family.

How big is the Clavier PCB?

The Clavier measures 431.5 × 125.5 mm, has 4 copper layers and is 1.6062 mm thick.

How many components are on the Clavier?

223 components, from 43 distinct parts. The full bill of materials is listed on this page.

Where can I download the Clavier design files?

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

Can I use the Clavier design in my own project?

It is published under Custom license, which limits how it may be reused; read the license before building on it.

Can I test firmware for the Clavier without the hardware?

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

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