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octohub

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@hmaerki

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Files for version 1. Pick what you came for.

KiCad projectAll 43 files, ready to open in KiCad656 KB
For fabricationGerbers, drill, pick-and-place and BOMGerbers and drill zip379 KBGerbers and drill zip: pcb_octohub176 KBPick and place (CSV)9.6 KBPick and place (CSV): pcb_octohub5.2 KBBOM CSV18 KB
3D modelThe board with its parts, for an enclosure (GLB)3D model (GLB)13 MB3D model (GLB): pcb_octohub5.2 MB
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README

octohub

A simple usb 2.0 hub with focus on per port power switching.

Work in progress.

Features - Hardware

  • ~USD 4 when ordering 30 pieces. Fully assembled at JLCPCB.

  • Kicad. Production files ready to upload to JLCPCB.

  • Power control for each plug using (uhubctl)[https://github.com/mvp/uhubctl].

  • NO manual power buttons. Many commercial hubs have buttons. If accidentely pressed, usb switching is disabled.

  • Power LEDs which are visible from different angles. Many commercial switchs have LEDs, but not well visible.

  • Plug numbering. Many commercial switches do not number the plugs and there is very little space left to add stickers.

Features - Electronics

USB2 only. This makes uhubctl much faster.

Bus powered. Less cables is better.

USB descripter self-powered. This is against the USB spec. This is required as a RP2 requests 500mA. The USB 2.0 spec allows a bus-powered device to use max 100mA. The current measureed on the RP2 is only 25mA.

Over current protection. However, no over current feedback to USB.

If a device requires USB3, it is still possible to use a commercial hub.

Current state of v0.2:

Schematics

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