SX-Key not found on comm1

Basic Jim

Hello All,

· I'm afraid I have a problem with my SX-Key. This is first time I set it·up and the SX Tech board. I have a 9 Volt adapter hooked up to it and the power light to the board comes on OK. But, when I try to run the SX-keyV3.1 software and load the first experiment in the book the software returns a 'SX-Key not found on comm1' error. I verified that it is comm1 that I am using because when it didn't work I pluged the cable into my BS2 and the basic stamp editor can see the BS2 fine. Can anyone tell me if I'm missing something? I can't think of what else to try but I'm probably overlooking something stupid.

Thanks,
Jim W.

Jon Williams

Try a beefier power supply; with an SX and Key plugged in your battery may be week and ultimately dragging down enough to disrupt the key. The LED only needs a few milliamps to illuminate, so it's not a good indicator that you have enough power. Grab a 9V wall wart, 500 mA or better.

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Jon Williams
Applications Engineer, Parallax

Basic Jim

Thanks, I had a 400MA wall wart. I guess that was just a little too anemic. Rumaged through my pile and found a 500ma at 7.5Volts and all my problems are now gone.

Thanks again,
Jim W.