June 28th, 2013, 4:50

June 28th, 2013, 6:45
glhd wrote:I don' have a tll adaptor but the spoiled serial cable below, can I use this ?
June 28th, 2013, 7:17
Vulcan wrote:No! It won't work correctly (incompatible voltages) and using that might have damaged the drive's electronics.
June 28th, 2013, 7:47
June 28th, 2013, 10:06
June 28th, 2013, 10:49
June 28th, 2013, 10:51
glhd wrote:Now the HD spin down after some clicks, I hope it's not related to this...
June 28th, 2013, 10:53
Vulcan wrote:@BlackST,
Yes, exactly - perhaps not +/- 12V, especially if it was a laptop serial port, but at least +/- 5V.
@glhd,
I don't understand exactly what you are now asking about regarding "suggestion on TTL device", but perhaps someone else understands / cares.
June 28th, 2013, 11:01
Vulcan wrote:@BlackST,
Yes, exactly - perhaps not +/- 12V, especially if it was a laptop serial port, but at least +/- 5V.
Vulcan wrote:@
@glhd,
I don't understand exactly what you are now asking about regarding "suggestion on TTL device", but perhaps someone else understands / cares.
June 28th, 2013, 11:02
BlackST wrote:Recent laptops do not have serial port anymore since some years
BlackST wrote:anyway even if it was a lpatop it's far more than +5/-5 ....
June 28th, 2013, 11:04
BlackST wrote:glhd wrote:Now the HD spin down after some clicks, I hope it's not related to this...
Maybe "something" has died completely OR the PCB was screwed during these attempts.
Is all this "just for learning" or data has still an importance ?
June 28th, 2013, 14:57
glhd wrote:Vulcan wrote:@glhd,
I don't understand exactly what you are now asking about regarding "suggestion on TTL device", but perhaps someone else understands / cares.
On Ebay I've found TTL device for 2 dollars, so I'm asking if one of these ultra cheap device will work or if is better to buy something better
June 28th, 2013, 16:48
Vulcan wrote:glhd wrote:Vulcan wrote:@glhd,
I don't understand exactly what you are now asking about regarding "suggestion on TTL device", but perhaps someone else understands / cares.
On Ebay I've found TTL device for 2 dollars, so I'm asking if one of these ultra cheap device will work or if is better to buy something better
Unfortunately you are making it difficult to help you, as "TTL device" is too vague to give an answer.If you supply a link to whatever you are talking about, that will probably help.
All I will say is that you have to take responsibility for your decision to do DIY. I don't know how anyone can tell you if something from Ebay will "work", or not. It could be broken, or you might connect it wrongly, or X other possible problems. Or perhaps you are describing the right adapter and it works, but your drive has already been damaged by your decision to attach the drive to a PC serial port, and so whatever you get from Ebay might appear not to work (although there are tests you can do). The point is that IMHO you are asking a hypothetical question, which is not possible for someone else to answer with confidence. Of course another member here might have a different view.
As I said a while ago, I was just trying to help by answering your earlier question. I could already see from the earlier part of the thread that there would be communication problems, so I'll stop here. Good luck
June 29th, 2013, 4:01
June 29th, 2013, 4:19
fzabkar wrote:The Putty screen dump seems to suggest that the "TTL" interface may be very tolerant. Perhaps there are latchup protection diodes on the GPIO inputs, in which case the inputs may have survived. For example, Microchip's PICs are designed to tolerate RS232 signal levels, provided there is sufficient series resistance.
June 29th, 2013, 8:49
June 29th, 2013, 15:34
glhd wrote:The label on the hd says that the power specification are +12V /+5V
I completely ignored that the TTL interface used different voltages
Also the Putty output was always the same between differtent tests
July 2nd, 2013, 12:16
July 2nd, 2013, 12:25
glhd wrote:I have any chance of fixing something, or I can only have a better diagnose of the problem ?
July 2nd, 2013, 12:58
I have any chance of fixing something...
?
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