4 layers304.8 × 119.1 mm Keyboard, the printed circuit board in 3D

Keyboard

A 65% keyboard design from scratch with PCB, case and firmware. (planned)

Size: 304.8 × 119.1 mm
Copper layers: 4
Thickness: 1.6 mm
Parts: 211
Nets: 162
Pads: 977
Tracks, vias: 990, 176
Pours: 4
Routed: Yes
KiCad: KiCad 10.0 (file 20260206)
Created: 2 Feb 2026
Updated: 14 Sep 2026

Overview

Keyboard is an open-source printed circuit board by tritoke, from the tritoke/keyboard repository on GitHub. It is a 4-layer board of 304.8 × 119.1 mm with 211 parts on 162 nets, routed with 990 tracks and 176 vias.

It is built around the DW01A, TP4056-42-ESOP8 and FDN340P, with the 1SMB5918BT3G and PRTR5V0U2X among its other parts. Its parts include 74 diodes, 71 switches, 23 capacitors, 15 resistors and 3 ICs. It belongs with the keyboards and input boards and the nRF52 and nRF5x boards of this library.

Main components

README

README.md

keyboard

This is my efforts towards making the exact keyboard entirely for fun.

Wants:

Usable over USB or Bluetooth
65% with arrow keys, ISO enter and the four keys on the right

Progress:

PCB (rev1 done)
Case (freeCAD is kicking my ass)
Firmware (I have some thoughts and that is all)

PCB

Revision 1 of the PCB is now complete:

A render in kicad of the front of the PCB

A render in kicad of the back of the PCB

Parts

211

Qty	Value	Footprint	References
69	D	Diode_SMD:D_0805_2012Metric_Pad1.15x1.40mm_HandSolder	D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +53
59	KEYSW	My_Footprints:SW_Hotswap_Kailh_MX_1.00u	K1, K2, K10, K11, K12, K13, K15, K17, K18, K19, K20, K21, K22, K23, K24, K25 +43
9	MountingHole_Pad	MountingHole:MountingHole_2.2mm_M2_Pad_Via	H1, H2, H3, H4, H5, H6, H7, H8, H9
6	100nF	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder	C5, C7, C8, C12, C17, C18
5	KEYSW	My_Footprints:SW_Hotswap_Kailh_MX_1.25u	K16, K46, K61, K62, K63
4	4.7µF	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder	C6, C19, C20, C21
3	NC	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder	C10, C13, C22
2	1.0µF	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder	C14, C15
2	10µF	Capacitor_Tantalum_SMD:CP_EIA-2012-15_AVX-P_HandSolder	C11, C23
2	12pF	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder	C1, C2
2	1k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder	R4, R5
2	5k1	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R1, R2
2	FDN340P	Package_TO_SOT_SMD:SOT-23_Handsoldering	Q1, Q3
2	KEYSW	My_Footprints:SW_Hotswap_Kailh_MX_1.75u	K31, K58
2	LED	LED_SMD:LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder	D65, D66
2	LOGO	My_Footprints:paisley	G*, G*
2	SW_SPST	My_Footprints:Legion SS11	SW1, SW2
1	0.4	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R6
1	0.5pF	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder	C4
1	0.8pF	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder	C3
1	1.0K	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R9
1	100R	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R8
1	100k	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R14
1	100pF	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder	C9
1	10R	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R3
1	10k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder	R10
1	10k	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R11
1	10µH	Inductor_SMD:L_0603_1608Metric_Pad1.05x0.95mm_HandSolder	L2
1	15nH	Inductor_SMD:L_0603_1608Metric_Pad1.05x0.95mm_HandSolder	L3
1	1SMB5918BT3G	Diode_SMD:D_SMB_Handsoldering	D64
1	250k	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R15
1	2k2	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R7
1	315mA	Fuse:Fuse_0402_1005Metric_Pad0.77x0.64mm_HandSolder	F1
1	32MHz	My_Footprints:Crystal_SMD_2016-4Pin_2.0x1.6mm_HandSolder	X1
1	4.7nH	Inductor_SMD:L_0603_1608Metric_Pad1.05x0.95mm_HandSolder	L1
1	420k	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R12
1	44k	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R13
1	47nF	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder	C16
1	Conn_ARM_JTAG_SWD_10	Connector_IDC:IDC-Header_2x05_P2.54mm_Vertical	J1
1	Conn_Coaxial	My_Footprints:SMA_Molex_73251-1153_EdgeMount_Horizontal_HandSolder	J3
1	DW01A	Package_TO_SOT_SMD:SOT-23-6	U3
1	FS8025A	Package_TO_SOT_SMD:SOT-23-6_Handsoldering	Q2
1	KEYSW	My_Footprints:SW_Hotswap_Kailh_MX_ISOEnter_Stabilised	K29
1	KEYSW	My_Footprints:SW_Hotswap_Kailh_MX_2.00u_Stabilised	K14
1	KEYSW	My_Footprints:SW_Hotswap_Kailh_MX_6.25u_Stabilised	K67
1	Keystone 1042	Battery:BatteryHolder_Keystone_1042_1x18650	BT1
1	LOGO	My_Footprints:pfp	G***
1	MSS1P4-M3/89A	Diode_SMD:D_MicroSMP_LargeCathode	D68
1	NTC	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	TH1
1	PRTR5V0U2X	Package_TO_SOT_SMD:SOT-143	D44
1	TP4056-42-ESOP8	Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.29x3mm	U2
1	USB_C_Receptacle_USB2.0_16P	My_Footprints:USB_C_Receptacle_G-Switch_GT-USB-7010ASV_handsolder_lmao.csv	J2
1	nRF52840	Package_DFN_QFN:Nordic_AQFN-73-1EP_7x7mm_P0.5mm	U1

Questions

How big is the Keyboard PCB?

It measures 304.8 × 119.1 mm and has 4 copper layers, 1.6 mm thick.

What parts does the Keyboard use?

211 parts, built around the DW01A, TP4056-42-ESOP8, FDN340P and 1SMB5918BT3G. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.

Where can I download the Keyboard KiCad files?

From the tritoke/keyboard repository on GitHub, at the commit this page was made from: the board is pcb/keyboard.kicad_pcb and its schematic pcb/key_matrix.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Keyboard design in my own project?

Its repository states no licence, so its author keeps all rights: ask tritoke before reusing the design.

Category and platform

Keyboards and input nRF52 and nRF5x

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/tritoke-keyboard" title="Keyboard in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe>

A picture

<img src="https://pcbkit.io/embed/boards/tritoke-keyboard.jpg" alt="Keyboard" width="1200" height="900">

A picture that opens the board, for a README

[![Keyboard](https://pcbkit.io/embed/boards/tritoke-keyboard.jpg?size=s)](https://pcbkit.io/boards/tritoke-keyboard)

Source

Repository: tritoke/keyboard
Board file: pcb/keyboard.kicad_pcb
Commit: 90e44a0
Licence: Not stated

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