Numpad Daughterboard

nearestexit·mx-unsaver·Numpad_Daughterboard/Numpad_Daughterboard.kicad_pcb

Numpad Daughterboard PCB layout, top view — open source board by nearestexit

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About the Numpad Daughterboard PCB

Numpad Daughterboard is an open source PCB design by nearestexit, published on GitHub under the MIT license. It is a 2-layer board measuring 24 × 16 mm, with 6 components from 5 distinct parts.

Other key parts include the SRV05-4. By type, the board carries 2 connectors, 2 resistors, 1 IC and 1 fuse.

It belongs with the keyboards designs in this gallery.

From the project

Custom Keyboard & Numpad inspired by the IBM "Unsaver", built with Onshape and KiCad

Custom keyboard and numpad inspired by vintage Cherry keyboards and the IBM "Unsaver". Designed in Onshape and KiCad. Powered by QMK.

Case Source (Onshape): https://cad.onshape.com/documents/1d9e79a61d42e7395c429f47/w/28912f958105e1c831f67a9e/e/537bd51b2d234361e6d6eea3

Important: The PCB has the words "Made In Germany" printed on it. This is because it was actually manufactured in Germany. If you choose to have it manufactured in China, please remove this logo from the PCB.

Numpad Daughterboard, from the project README — From the project README

Main components on the Numpad Daughterboard

Numpad Daughterboard bill of materials (BOM)

6 components, 5 distinct parts — part numbers from the project's BOM.

Qty	Part	Footprint	Refs
1	SRV05-4	SOT-23-6-routable	U1
1	USB_C_RECEPTACLE_USB2.0_16P USB_C_Receptacle_USB2.0_16P	PHOENIX_1332645	J1
1	CONN_01X04_MOUNTINGPIN Conn_01x04_MountingPin	JST_SH_SM04B-SRSS-TB_1x04-1MP_P1.00mm_Horizontal	J2
1	SMD0805-050-16V TECHFUSE	Fuse_1206_3216Metric	F1
2	5.1K 5.1k	C_0603_1608Metric_Pad1.08x0.95mm_HandSolder	R1, R2

Numpad Daughterboard design files

The KiCad project lives in the nearestexit/mx-unsaver repository on GitHub; these links point at the commit this page was built from.

Numpad Daughterboard: common questions

How big is the Numpad Daughterboard PCB?

The Numpad Daughterboard measures 24 × 16 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Numpad Daughterboard?

6 components, from 5 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 Numpad Daughterboard design files?

From the nearestexit/mx-unsaver 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 Numpad Daughterboard design in my own project?

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

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