I am using a PC via the standard RS-232 9-pin serial interface on the back of the module, directly connected.

If this is in fact the case, would it be possible to use a voltage-limiting resistor on either serial input/output to use a PC to communicate with the display? I would really like to design ...

Yeah, but is this the cause of the problem of incorrect/garbled display...the voltage difference?

Hi,

Just a side note, I tried virtually all combinations of port speed settings, etc. with no luck. I didn't try the "manual over-ride" or memory reset because this wasn't mentioned in the LK204-25 PDF file, and I don't know if its supported or not.

Thanks for any help ahead of time.

Hi,

I recently purchased a LK204-25-WB from Parallax.com, for use in an upcoming project with a Basic STAMP microcontroller. I wanted to test the LCD real quick and perhaps design a user interface in Windows, so I connected it up as the manual says (note that Matrix didn't have an exact manual for ...