EgHub
karhincheong·EgHub·kicad/USB_HUB.kicad_pcb
About the EgHub PCB
EgHub is an open source PCB design by karhincheong, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 66.5 × 89.2 mm, with 33 components from 7 distinct parts.
Other key parts include the SL2.1s and USBLC6-2SC6. By type, the board carries 16 capacitors, 6 ICs and 6 resistors.
It belongs with the usb & debug tools designs in this gallery.
From the project
PCB Keychain for Hackclub Fallout
A 4-port output USB Hub keychain in the shape of an egg as a tribute to my friends. Main IC being CoreChips SL2.1S
This project is meant to be a try-out project for Fallout. It is to function as a primer for me to learn to make/design a PCB and at the same time make something useful.
You may choose to hand solder the components onto the PCB.
1. Print out the top and bottom covers using a 3D Printer. 2. Screw M3 screws into the 3 screw holes to an adequate tightness such that it doesnt damage the USB receptacles. Take note of the postition of the input USB-C.

Main components on the EgHub
EgHub bill of materials (BOM)
33 components, 7 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | SL2.1s SL2.1S CoreChips(和芯润德) | SSOP-16_L4.6-W2.6-P0.53-LS4.0-BL | U1 |
| 5 | USBLC6-2SC6 | SOT-23-6 | U2, U3, U4, U5, U6 |
| 3 | TYPE-C 16PIN 2MD(073) TYPE-C 16PIN 2MD SHOU HAN(首韩) | USB-C-SMD_TYPE-C-6PIN-2MD-073 | USB2, USB6, USB7 |
| 2 | 10.0 QHHTZB6.3 SHOU HAN(首韩) | USB-A-TH_10.0QHHTZB6.3 | USB5, USB8 |
| 8 | 1UF 1uF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C2, C3, C4, C5, C6, C8, C10 |
| 8 | 100NF 100nF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C7, C9, C11, C12, C13, C14, C15, C16 |
| 6 | 5.1K | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R2, R3, R4, R5, R6 |
EgHub design files
The KiCad project lives in the karhincheong/EgHub repository on GitHub; these links point at the commit this page was built from.
- Layoutkicad/USB_HUB.kicad_pcb
- Schematickicad/USB_HUB.kicad_sch
- BOMkicad/USB_HUB.csv
EgHub: common questions
How big is the EgHub PCB?
The EgHub measures 66.5 × 89.2 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the EgHub?
33 components, from 7 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 EgHub design files?
From the karhincheong/EgHub 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 EgHub design in my own project?
Yes, under the terms of its GPL-3.0 license, which karhincheong chose for the repository.
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