junyali/Scrappy-TailA DIY USB 2.0 Hub with 4 Type-A ports and a Type-C input, with a cute 3D printed scrappy cat case!! :3
Scrappy Tail is an open-source printed circuit board by junyali, from the junyali/Scrappy-Tail repository on GitHub. It is a 2-layer board of 99 × 31 mm with 24 parts on 20 nets, routed with 120 tracks and 6 vias.
It is built around the SL2.1A, CL31A107MQHNNNE and 67643-3911, with the RC0603FR-5K1L, SS14 and DX07S016JA1R1500 among its other parts. Its parts include 7 capacitors, 5 connectors, 2 resistors, 1 IC and 1 diode.
A DIY USB 2.0 Hub with 4 Type-A ports and a Type-C input, with a cute 3D printed scrappy cat case!! :3
Scrappy Tail connects to your device using USB Type-C (hence the cable making it look like a tail!) and gives you 4 additional USB Type-A ports. It uses the SL2.1A hub controller, so it uses USB 2.0 interface and thus speeds are limited to 480Mbps
PCB designed in KiCAD and CAD designed in OnShape.
| Description | Image |
|---|---|
| Schematic |  |
| PCB |  |
| 3D PCB Render Front |  |
| 3D PCB Render Back |  |
| CAD + PCB |  |
This one's a bit of an expensive one thanks to the PCBA fees.
See the original BOM under bom.csv
| Component | Quantity | LCSC Part # | Price (USD) | LCSC Link |
|---|---|---|---|---|
| 100uF Ceramic Capacitor | 7 | CL31A107MQHNNNE | 0.34 | https://lcsc.com/product-detail/Multilayer-Ceramic-Capacitors-MLCC-SMD-SMT_Samsung-Electro-Mechanics-CL31A107MQHNNNE_C15008.html |
| Schottky Diode 1206 | 1 | C466498 | 0.47 | https://lcsc.com/product-detail/Schottky-Diodes_High-Diode-SS14_C466498.html |
| USB C Receptacle JAE DX07S016JA1R1500 | 1 | C3197885 | 0.97 | https://lcsc.com/product-detail/USB-Connectors_JAE-DX07S016JA1R1500_C3197885.html |
| USB A Receptacle Molex 67643 Horizontal | 4 | C2765194 | 0.88 | https://lcsc.com/product-detail/USB-Connectors_MOLEX-67643-3911_C2765194.html |
| 5.1kΩ Resistor 0603 | 2 | C105580 | 0.12 | https://lcsc.com/product-detail/Chip-Resistor-Surface-Mount_YAGEO-RC0603FR-075K1L_C105580.html |
| CoreChips SL2.1A | 1 | C192893 | 1.31 | https://lcsc.com/product-detail/USB-HUB-Controllers_CoreChips-SL2-1A_C192893.html |
| PCB manufactured by JLCPCB (incl shipping, taxes, customs) | 5 | N/A | 3.10 | https://jlcpcb.com |
| Economic PCBA assembled by JLCPCB (incl shipping, taxes, customs) | 2 | N/A | 52.38 | https://jlcpcb.com |
Subtotal (excluding PCBA): US$7.19
Estimated cost (PCBA which includes parts and PCB): US$55.48
| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | LOGO | LOGO | G***, G***, G***, G***, G***, G***, G***, G*** |
| 7 | 100nF | Capacitor_SMD:C_1206_3216Metric | C1, C2, C3, C4, C5, C6, C7 |
| 4 | USB_A | Connector_USB:USB_A_Molex_67643_Horizontal | J2, J3, J4, J5 |
| 2 | R | Resistor_SMD:R_0603_1608Metric | R1, R2 |
| 1 | D | Diode_SMD:D_1206_3216Metric | D1 |
| 1 | SL2.1A | SL2.1A:SO16 | U1 |
| 1 | USB_C_Receptacle_USB2.0_16P | Connector:USB_C_Receptacle_JAE_DX07S016JA1R1500_3D | J1 |
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It measures 99 × 31 mm and has 2 copper layers, 1.6 mm thick.
24 parts, built around the SL2.1A, CL31A107MQHNNNE, 67643-3911 and RC0603FR-5K1L. 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.
From the junyali/Scrappy-Tail repository on GitHub, at the commit this page was made from: the board is pcb/pcb.kicad_pcb and its schematic pcb/pcb.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Its repository states no licence, so its author keeps all rights: ask junyali before reusing the design.