USB-A-Daughterboard

nearestexit·mx-unsaver·USB-A-Daughterboard/USB-A-Daughterboard.kicad_pcb

USB-A-Daughterboard PCB layout, top view — open source board by nearestexit

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About the USB-A-Daughterboard PCB

USB-A-Daughterboard is an open source PCB design by nearestexit, published on GitHub under the MIT license. It is a 2-layer board measuring 96.1 × 29.3 mm, with 52 components from 21 distinct parts.

Other key parts include the FE1.1S-BSOP28BCN, SRV05-4 and TPS2552DBVR. By type, the board carries 18 resistors, 13 capacitors, 7 ICs, 5 connectors, 4 diodes and 3 test points.

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.

USB-A-Daughterboard, from the project README — From the project README

Main components on the USB-A-Daughterboard

FE1.1S-BSOP28BCN SRV05-4 TPS2552DBVR

USB-A-Daughterboard bill of materials (BOM)

52 components, 21 distinct parts — part numbers from the project's BOM.

Qty	Part	Footprint	Refs
1	FE1.1S-BSOP28BCN FE1.1s-BSOP28BCN	SSOP-28_3.9x9.9mm_P0.635mm	U1
5	SRV05-4	SOT-23-6-routable	U2, U3, U4, U5, U6
1	TPS2552DBVR	SOT-23-6-routable	U7
1	CRYSTAL_GND24 Crystal_GND24	Crystal_SMD_3225-4Pin_3.2x2.5mm	Y1
3	USB_C_RECEPTACLE_USB2.0_16P USB_C_Receptacle_USB2.0_16P	PHOENIX_1332645	J1, J2, J5
2	CONN_01X04 Conn_01x04	JST_SH_SM04B-SRSS-TB_1x04-1MP_P1.00mm_Horizontal	J3, J4
1	SMD0805-050-16V TECHFUSE	Fuse_1206_3216Metric	F1
3	TestPoint_Small	TestPoint_THTPad_D1.0mm_Drill0.5mm	TP1, TP2, TP3
4	2007-BL-HJC36G-AV-TRB LED_Small	LED_0603_1608Metric	D1, D2, D3, D4
2	33P 33p	C_0603_1608Metric	C1, C2
5	100N 100n	C_0603_1608Metric	C3, C4, C11, C12, C13
2	10U 10u	C_0603_1608Metric	C5, C6
2	100U 100u	C_1206_3216Metric	C7, C8
2	1u	C_0603_1608Metric	C9, C10
1	2.7K 2.7k	R_0603_1608Metric	R1
5	10K 10k	R_0603_1608Metric	R2, R3, R4, R5, R10
3	510	R_0603_1608Metric	R6, R7, R9
1	1k	R_0603_1608Metric	R8
2	33K 33k	R_0603_1608Metric	R11, R12
2	5.1K 5.1k	R_0603_1608Metric	R13, R14

Show 1 more

Qty	Part	Footprint	Refs
4	56K 56k	R_0603_1608Metric	R15, R16, R17, R18

USB-A-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.

USB-A-Daughterboard: common questions

How big is the USB-A-Daughterboard PCB?

The USB-A-Daughterboard measures 96.1 × 29.3 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the USB-A-Daughterboard?

52 components, from 21 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 USB-A-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 USB-A-Daughterboard design in my own project?

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

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