This page describes how to use the Serial-enabled LCD from SparkFun. This is not the I2C version of the serial display from Sparkfun.
We recommend (in January 2020) that you purchase an LCD with an I2C interface instead. The information on this page is for folks who have the older version, which does not use I2C.
The following links will help you get started with the Serial-enabled LCD
Consult these references for more background on the Serial-enabled LCD