2 layers43.2 × 17.8 mm
Adafruit MCP23017 GPIO Expander
AndrophageKB/excelsior
150% 3-section hand-wired keyboard.
30 parts1GPL-3.0
2 layers20.3 × 30.5 mm
Adafruit CH334F Mini 4-Port USB Hub Breakout
AndrophageKB/excelsior1150% 3-section hand-wired keyboard.
- Size
- 20.3 × 30.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 68
- Nets
- 25
- Pads
- 112
- Tracks, vias
- 316, 31
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 9 May 2025
- Updated
- 24 Jun 2025
Overview
Adafruit CH334F Mini 4-Port USB Hub Breakout is an open-source printed circuit board by AndrophageKB, from the AndrophageKB/excelsior repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 20.3 × 30.5 mm with 68 parts on 25 nets, routed with 316 tracks and 31 vias.
It is built around the CH334F. Its parts include 7 capacitors, 5 resistors and 3 crystals. It belongs with the interfaces and adapters boards of this library.
Main components
1README
pcb/readme.mdThis is a hand-wired build, so the "PCBs" here are not meant for production. I am using them to select and record the necessary components and to verify that the wiring topology is feasible.
Parts
68| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | Adafruit CH334F Mini 4-Port USB Hub Breakout:1X04_ROUND | JP1, JP2, JP3, JP4, JP5 | |
| 5 | GREEN | Adafruit CH334F Mini 4-Port USB Hub Breakout:CHIPLED_0603_NOOUTLINE | ACTLED0, P1LED0, P2LED0, P3LED0, P4LED0 |
| 4 | 100uF | Adafruit CH334F Mini 4-Port USB Hub Breakout:_1206 | C3, C4, C5, C6 |
| 4 | MOUNTINGHOLE2.5 | Adafruit CH334F Mini 4-Port USB Hub Breakout:MOUNTINGHOLE_2.5_PLATED | U$23, U$28, U$29, U$31 |
| 2 | 10uF | Adafruit CH334F Mini 4-Port USB Hub Breakout:0805-NO | C2, C8 |
| 2 | 4.7K | Adafruit CH334F Mini 4-Port USB Hub Breakout:0603-NO | R4, R5 |
| 2 | 5.1K | Adafruit CH334F Mini 4-Port USB Hub Breakout:0603-NO | R1, R2 |
| 2 | FIDUCIAL_0.5MM | Adafruit CH334F Mini 4-Port USB Hub Breakout:FIDUCIAL_0.5MM | FID1, FID2 |
| 1 | Adafruit CH334F Mini 4-Port USB Hub Breakout:PLABEL5 | PLABEL5 | |
| 1 | Adafruit CH334F Mini 4-Port USB Hub Breakout:PLABEL19 | PLABEL19 | |
| 1 | Adafruit CH334F Mini 4-Port USB Hub Breakout:PLABEL25 | PLABEL25 | |
| 1 | Adafruit CH334F Mini 4-Port USB Hub Breakout:SOLDERJUMPER_CLOSEDWIRE | SJ1 | |
| 1 | Adafruit CH334F Mini 4-Port USB Hub Breakout:PLABEL21 | PLABEL21 | |
| 1 | Adafruit CH334F Mini 4-Port USB Hub Breakout:PLABEL16 | PLABEL16 | |
| 1 | Adafruit CH334F Mini 4-Port USB Hub Breakout:PLABEL15 | PLABEL15 | |
| 1 | Adafruit CH334F Mini 4-Port USB Hub Breakout:PLABEL2 | PLABEL2 | |
| 1 | Adafruit CH334F Mini 4-Port USB Hub Breakout:PLABEL27 | PLABEL27 | |
| 1 | Adafruit CH334F Mini 4-Port USB Hub Breakout:PLABEL1 | PLABEL1 | |
| 1 | Adafruit CH334F Mini 4-Port USB Hub Breakout:PLABEL18 | PLABEL18 | |
| 1 | Adafruit CH334F Mini 4-Port USB Hub Breakout:PLABEL12 | PLABEL12 | |
| 1 | Adafruit CH334F Mini 4-Port USB Hub Breakout:PLABEL9 | PLABEL9 | |
| 1 | Adafruit CH334F Mini 4-Port USB Hub Breakout:PLABEL17 | PLABEL17 | |
| 1 | Adafruit CH334F Mini 4-Port USB Hub Breakout:ADAFRUIT_5MM | U$33 | |
| 1 | Adafruit CH334F Mini 4-Port USB Hub Breakout:PLABEL8 | PLABEL8 | |
| 1 | Adafruit CH334F Mini 4-Port USB Hub Breakout:PLABEL28 | PLABEL28 | |
| 1 | Adafruit CH334F Mini 4-Port USB Hub Breakout:PLABEL3 | PLABEL3 | |
| 1 | Adafruit CH334F Mini 4-Port USB Hub Breakout:PLABEL22 | PLABEL22 | |
| 1 | Adafruit CH334F Mini 4-Port USB Hub Breakout:PLABEL11 | PLABEL11 | |
| 1 | Adafruit CH334F Mini 4-Port USB Hub Breakout:PLABEL0 | PLABEL0 | |
| 1 | Adafruit CH334F Mini 4-Port USB Hub Breakout:PCBFEAT-REV-040 | U$34 | |
| 1 | Adafruit CH334F Mini 4-Port USB Hub Breakout:PLABEL14 | PLABEL14 | |
| 1 | Adafruit CH334F Mini 4-Port USB Hub Breakout:PLABEL20 | PLABEL20 | |
| 1 | Adafruit CH334F Mini 4-Port USB Hub Breakout:PLABEL4 | PLABEL4 | |
| 1 | Adafruit CH334F Mini 4-Port USB Hub Breakout:PLABEL26 | PLABEL26 | |
| 1 | Adafruit CH334F Mini 4-Port USB Hub Breakout:PLABEL13 | PLABEL13 | |
| 1 | Adafruit CH334F Mini 4-Port USB Hub Breakout:PLABEL6 | PLABEL6 | |
| 1 | Adafruit CH334F Mini 4-Port USB Hub Breakout:PLABEL23 | PLABEL23 | |
| 1 | Adafruit CH334F Mini 4-Port USB Hub Breakout:PLABEL24 | PLABEL24 | |
| 1 | Adafruit CH334F Mini 4-Port USB Hub Breakout:PLABEL10 | PLABEL10 | |
| 1 | Adafruit CH334F Mini 4-Port USB Hub Breakout:PLABEL30 | PLABEL30 | |
| 1 | Adafruit CH334F Mini 4-Port USB Hub Breakout:PLABEL32 | PLABEL32 | |
| 1 | Adafruit CH334F Mini 4-Port USB Hub Breakout:PLABEL7 | PLABEL7 | |
| 1 | Adafruit CH334F Mini 4-Port USB Hub Breakout:PLABEL31 | PLABEL31 | |
| 1 | Adafruit CH334F Mini 4-Port USB Hub Breakout:PLABEL29 | PLABEL29 | |
| 1 | 12MHz | Adafruit CH334F Mini 4-Port USB Hub Breakout:CRYSTAL_2.5X2 | Y1 |
| 1 | 1uF | Adafruit CH334F Mini 4-Port USB Hub Breakout:0603-NO | C9 |
| 1 | 47K | Adafruit CH334F Mini 4-Port USB Hub Breakout:0603-NO | R3 |
| 1 | 5V/2A | Adafruit CH334F Mini 4-Port USB Hub Breakout:0805-NO | PTC2 |
| 1 | CH334F | Adafruit CH334F Mini 4-Port USB Hub Breakout:QFN24_4MM | X2 |
| 1 | USB C | Adafruit CH334F Mini 4-Port USB Hub Breakout:USB_C_CUSB31-CFM2AX-01-X | X1 |
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Questions
How big is the Adafruit CH334F Mini 4-Port USB Hub Breakout PCB?
It measures 20.3 × 30.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Adafruit CH334F Mini 4-Port USB Hub Breakout use?
68 parts, built around the CH334F. 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.
Where can I download the Adafruit CH334F Mini 4-Port USB Hub Breakout KiCad files?
From the AndrophageKB/excelsior repository on GitHub, at the commit this page was made from: the board is pcb/Adafruit CH334F Mini 4-Port USB Hub Breakout/Adafruit CH334F Mini 4-Port USB Hub Breakout.kicad_pcb and its schematic pcb/Adafruit CH334F Mini 4-Port USB Hub Breakout/Adafruit CH334F Mini 4-Port USB Hub Breakout.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Adafruit CH334F Mini 4-Port USB Hub Breakout design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).