USB to TTL serial cable problem.
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USB to TTL serial cable problem.

by korovkin on Tue Dec 25, 2012 3:12 pm

Good day.
Recently I purchased the USB to TTL serial cable (http://www.adafruit.com/products/954). After unpacking it I plugged to USB HUB not connecting it to a board. The USB HUB gone down immediately. When I unplugged the cable, USB HUB restored.
Is it a problem in a cable or is it me who connects it wrong?
Thank you very much in advance,
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Re: USB to TTL serial cable problem.

by adafruit on Tue Dec 25, 2012 9:21 pm

is it a powered hub?
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Re: USB to TTL serial cable problem.

by korovkin on Wed Dec 26, 2012 3:21 am

Yes, the HUB is powered. The power supply provides up to 800mA.
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Re: USB to TTL serial cable problem.

by adafruit on Wed Dec 26, 2012 2:31 pm

thats odd, do you have the TTL cable ends plugged into anything else
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Re: USB to TTL serial cable problem.

by korovkin on Thu Dec 27, 2012 1:01 am

First I tried the TTL pins disconnected, then I tried TX, RX, GND pins connected. Result is the same. I have bad hunch that the chip just short circuits USP bower pins.
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Re: USB to TTL serial cable problem.

by adafruit_support_rick on Thu Dec 27, 2012 11:28 am

Sorry about that. Please contact support@adafruit.com for a replacement. Please refer to this thread, and include your original order number.

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Re: USB to TTL serial cable problem.

by korovkin on Thu Dec 27, 2012 2:41 pm

Thank you.
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