I2C LCD help needed

[richard]

As it came it was 0x27 Dec 39 but I had to double it for pbp to 0x4e dec 78.

arduino uses a 7bit i2c address , so everything arduino-ish complies with that convention , pbp uses an 8bit i2c address scheme
no big deal just 1 shift left gets there from the 7 bit address.

add the R/W bit making $4E and $4F.

and that is a waste of time and effort, pbp i2c commands set or clear the r/w bit automatically
regardless.

google "pbp ic2 lcd"

you will find dt's version and an alternative for board with wiring variation
there may other variations also
you may need to trace the connections to verify code matches