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Posted

Hey guys.

I put together a test cable to make sure my LCD works.  It's connected to my computer's parallel port and draws 5 volts from the power supply.  Suppose I want to write "ABC D" to it.  The screen shows, "AABBCC  DD."  What could be wrong?  I've double checked my wiring, and it's all where it should be...

My LCD's a backlit HD44780, 16x2, 8-bit.

Posted

Well it seems that your PC isn't writing correctly to the LCD... You might as well hook it up to a core module and test it in the real-life environment it will be used in :)

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