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Opensource USB HUB

I made a custom USB HUB and now free to everyone to download

christianChristian
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I was looking to make a custom USB Hub for a project but I couldnt find any of them that worked and using the chip GL850G. The chip is pretty old and cheap, but in my case I didnt need to use any of the fast transfering USB3, probably the next version can be based on this schematic.

I have took the schematic from a chinese website and re-written on eagle + designed the PCB, which is not the best compact and neat design but it worked as prototype.

I am offering all the files and part lists in case someone will want to make a custom USB Hub.

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Discussions

Amy wrote 07/25/2021 at 12:54 • point

Do you have design files for this?

  Are you sure? yes | no

goodluckone wrote 07/09/2018 at 17:00 • point

fe1.1s cheap too.

  Are you sure? yes | no

goodluckone wrote 07/09/2018 at 17:00 • point

 FE1.1S  is cheap too.  

  Are you sure? yes | no

K.C. Lee wrote 05/16/2017 at 13:13 • point

You have discontinuity i.e. power/ground plane splits under your differential USB  tracks.  Might want to route those 4 vertical tracks else where.

  Are you sure? yes | no

Paul Stoffregen wrote 10/19/2016 at 10:18 • point

Any thoughts about a Multi-TT version?  Using this Single-TT chip is cheaper, but it means poor performance if more than one 12 Mbit/sec or 1.5 Mbit/sec devices attempt to communicate simultaneously.

  Are you sure? yes | no

Christian wrote 05/16/2017 at 13:00 • point

I am not sure, I took one of the schematic on the internet and tried to reproduce on eagle + pcb.

I found out this chip was too complicated and I made another one. Check out my github

  Are you sure? yes | no

Lacho Tomov wrote 09/25/2016 at 19:22 • point

Hi, does the differential impedance matter in this case? 

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Christian wrote 05/16/2017 at 13:00 • point

You need to be careful about the traces, they need to be same length. probably mine is not to top standard but working as usb 2.0

  Are you sure? yes | no

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