The answer to the previous post is that serial works .
I did try just to send some strings and i got them on the display.
For the i2c, it does not send it to the lcd as decimal, let say 1234 or 5678, it will just send one byte of each in the hex fromat.
I do not know if the problem is with writing just one byte or reading one byte from the whole word. for 1234 it will display just D2 . it looks it will not read the whole 4D2 , nor converted to decimal on the display
Ion