Imported from GitHub: hmaerki/octohub · commit 016b7f6 · license MIT

Description

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

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