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Synthiam
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https://synthiam.com/Tutorials/Hardware.aspx?id=13 is a good place to start.

Serial lcd's are much easier than i2c. Avoid i2c if you don't know much about it.:)

Connect power to the LCD. And also connect a digital wire from the EZ-B. it's easiest to use a peripheral cable.

Then in EZ-Script, you can use the SendSerial command. The syntax and help are displayed in the script editor manual:)