ND68

Naquino14·ND68·Board/ND68.kicad_pcb

About the ND68 PCB

ND68 is an open source RP2040/RP2350 PCB design by Naquino14, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 304.8 × 105.6 mm, with 247 components from 30 distinct parts.

Its main chip is the RP2040, from the RP2040/RP2350 family. Other key parts include the NCP1117-3.3_SOT223. By type, the board carries 89 capacitors, 69 switches, 69 diodes, 9 resistors, 5 ICs and 4 connectors.

It belongs with the keyboards designs in this gallery.

From the project

A keyboard from scratch.

All files in subfolders of this one created by contrubutors of this repository are licensed under Creative Commons Attribution-NonCommercial-NoDerivatives (CC BY-NC-ND).

Main components on the ND68

NCP1117-3.3_SOT223 RP2040

ND68 bill of materials (BOM)

247 components, 30 distinct parts — part numbers from the project's BOM.

Qty	Part	Footprint	Refs
1	NCP1117-3.3_SOT223	SOT-223-3_TabPin2	U1
1	RP2040	QFN-56-1EP_7x7mm_P0.4mm_EP3.2x3.2mm	U2
1	~	W25Q128JVSIQ	U3
2	~	ND68-1U-ARGB_LED_ONLY	U4, U5
1	BSS138 ON Semiconductor	SOT-23-3	Q1
1	Crystal_GND24	XTAL_ABM8-12.000MHZ-B2-T	Y1
1	USB_C_Receptacle_USB2.0_14P	USB_C_Receptacle_GCT_USB4105-GF-A	J1
1	Conn_01x03_Pin	PinHeader_1x03_P2.54mm_Vertical	J2
1	Conn_01x05_Pin	PinHeader_1x05_P2.54mm_Vertical	J3
1	Conn_01x02_Pin	PinHeader_1x02_P2.54mm_Vertical	J4
1	~	PTS636 SM43 SMTR LFS	SW0
57	~	ND68-1U-HS-ARGB	SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 +49
1	~	ND68-2U-HS-ARGB	SW14
2	~	ND68-1.5U-HS-ARGB	SW16, SW29
2	~	ND68-1.75U-HS-ARGB	SW31, SW56
2	~	ND68-2.25U-HS-ARGB	SW43, SW45
3	~	ND68-1.25U-HS-ARGB	SW59, SW60, SW61
1	~	ND68-6.25U-HS-ARGB	SW62
68	D	D_SOD-123F	D1, D2, D3, D4, D5, D6, D7, D8 +60
1	SJD12A06L01	D_SOD-123	D69

Show 10 more

Qty	Part	Footprint	Refs
5	10u	C_0805_2012Metric	C1, C2, C17, C88, C89
2	1u	C_0402_1005Metric	C3, C6
10	100n	C_0201_0603Metric	C4, C5, C7, C8, C9, C10, C11, C12 +2
2	15p	C_0201_0603Metric	C15, C16
70	100n	C_0603_1608Metric	C18, C19, C20, C21, C22, C23, C24, C25 +62
2	5.1k	R_0603_1608Metric	R1, R2
2	1k	R_0402_1005Metric	R3, R4
2	27.4	R_0402_1005Metric	R5, R6
2	10k	R_0402_1005Metric	R7, R8
1	470	R_0603_1608Metric	R9

ND68 design files

The KiCad project lives in the Naquino14/ND68 repository on GitHub; these links point at the commit this page was built from.

ND68: common questions

What microcontroller does the ND68 use?

The ND68 is built around the RP2040, from the RP2040/RP2350 family.

How big is the ND68 PCB?

The ND68 measures 304.8 × 105.6 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the ND68?

247 components, from 30 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the ND68 design files?

From the Naquino14/ND68 repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the ND68 design in my own project?

Yes, under the terms of its GPL-3.0 license, which Naquino14 chose for the repository.

Can I test firmware for the ND68 without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.