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Author Topic: Modifying a USB hub for extra power and "I did it!" showoff thread  (Read 5908 times)
btckess
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April 06, 2017, 02:17:12 PM
 #61

Finally got my overclocking issues figured out!
My creation is about to go from the "lab" (garage) to the "data center" (basement)  Grin
I just needed a cluster of pi (pies?) to go with my cluster of 2pacs. Found out what I thought was a hardware error with the 2pac was actually the pi usb port getting overloaded. I ran stable doing 200mhz @1.41v over the weekend and have been upping it every day. Doing 250mhz @ 1.41v for an average of 550Gh/s  Shocked





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AJRGale
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April 11, 2017, 01:31:42 AM
 #62

Nice bit of work there!
You're making me want to fire up the old avalon and compacs again.. I attempted to use 30cm cabling to reorganise the compacs onto a singe large heatsink, and I gave up when they all stopped talking to the system (I blame the cheap cables, they are cheap)
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April 11, 2017, 02:39:11 PM
 #63

I had good luck modding cheapest hubs I could find at the time. Shelf board with all the hubs attached is available if someone is interested, make an offer, its heavy.



HEY!! I have these hubs I find they don't like to support the Compac 2 chip, any tips?

I am thinking of just getting a usb extentsion cord, ripping it open and cutting into the power wires though.
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April 13, 2017, 06:03:44 AM
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HEY!! I have these hubs I find they don't like to support the Compac 2 chip, any tips?

I am thinking of just getting a usb extentsion cord, ripping it open and cutting into the power wires though.

you can use the extension splice technique, or you can pop em open them up and add heavier gauge wire across the positive and negative tracks to support the extra load.

what I did with mine is have the wires come out and attach the 5V wires off a HDD Molex connector to them. it wasn't a clean setup, but doable.
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January 12, 2018, 10:06:44 PM
 #65

Finally got my overclocking issues figured out!
My creation is about to go from the "lab" (garage) to the "data center" (basement)  Grin
I just needed a cluster of pi (pies?) to go with my cluster of 2pacs. Found out what I thought was a hardware error with the 2pac was actually the pi usb port getting overloaded. I ran stable doing 200mhz @1.41v over the weekend and have been upping it every day. Doing 250mhz @ 1.41v for an average of 550Gh/s  Shocked






That's a sweet looking rig and something I aspire to mimic. Do you have the STL files for the 3D printed stuff? I'd love to print some for myself.

Thanks,
TheNerdyType
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