problem interfacing LCD using I2C bus (Solved :) )

[system]

Are you using the NXP chip?

If so check the datasheet again, Page 9 specifically, and see that it tells you to include the LSB which you needed to do anyway and haven't, as you can see on pages 10 and 11.

Your address should be 0b01110000 = 0x70 = 112

The LSB from this byte is the R/W bit and has nothing to do with the adress off the device. You do have to send it though..