SX-KEY Diagnostic

mojorizing

I've been searching for the post/procedure by Guenther that explains how to connect to the Sx-Key w/ Hyperterminal, send the Key a few ascii letters, and it returns with an acknowledgment. This tests the serial connection to the key. I can't find the post or remember the exact wording of the command. Anyone recall this?

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Bad spellers of the world untie!

Velocit

Here it is... it's a good reference thread:

http://forums.parallax.com/showthread.php?p=619755

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-Paul

steve_b

Thanks for posting that troubleshooting/debugging thread!
I still haven't been able to get my SX-key to work....with similar problems (not found...or sometimes seems to work, then comes up not found).
Would like to get this one repaired, if it needs it, as I really don't want to mess with a USB key (prefer the rs232/serial one).

Cheers

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<FONT>Steve



What's the best thing to do in a lightning storm? "take a one iron out the bag and hold it straight up above your head, even God cant hit a one iron!"
Lee Travino after the second time being hit by lightning!

mojorizing

That's the post, thanks!

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Bad spellers of the world untie!

Guenther Daubach

Steve,

when your SX-Key seems to work from time to time, but is not found otherwise, it is most likely that it is not defective. Very often, a weak power supply is the reason for problems like this. The SX-Key (serial version) is powered from the target system via the Vdd and Vss header pins, and "solid", stable 5 Volts are expected here. Often, a 10µF tantalum cap attached across the Vdd/Vss pins of the target system's SX-Key 4-pin header helps a lot.

BTW: I'm untied

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Greetings from Germany,

Günther