Ninjastic
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Board Hardware
Re: [ANN] Technobit HEX8A1 - 6/8 chip Coincraft A1 board -999 EUR March delivery
by
loshia
on 24/02/2014, 17:48:08 UTC
Quote from: Gator-hex on February 24, 2014, 04:01:03 PM
Quote from: iFA88 on February 24, 2014, 10:42:37 AM
Quote from: Gator-hex on February 23, 2014, 05:17:31 PM
Quote from: iFA88 on February 23, 2014, 04:57:38 PM
A fast question, there is any solution for that the hex16a2 mini USB power dont give backward 5volt ? When i cut the usb cable red and black cables, then the board dont work.
Thanks.

Wierd, when I taped out the outer pins on my troublesome Hex16B board's cable, it worked fine.
(also work on Hex8A1, but it was something else that was the problem, needed a fan on the 5v PSU line, to help regulate the PSU.)
Are you sure you didn't damage the data cables? If you are, try adding back the ground. If that don't work you could try +5v and ground powered from a 5v PSU line (Red/Black), with more Amps in the PSU it shouldn't flow back, and PSU is designed to handle bad loads if it did.
Hy!
I dont have 5 volt on the PSU. At the first moment was worked. And then when i restarted the PSU the board Led don't Light up and the Rpi dont see the board. When i plug the red/black back then works fine. The fan worked fine on all two try.

Raspberry Pi is crap has a history of USB/Power issues. If you use a TP-Link TL-3020 as your mining PC it won't care if the USB leaks power or not. That's another way I found to handle a leaking miner, stick it directly on it's own TP-Link TL-3020.
+1 Wink
Or if you are paranoid just strip USB cable gently and cut red wire + 5v and leave the ground