lcd 1602 not being declared with back pack on?

Errror: lcd not declared in this scope, with 4 pin back pack on lcd, what is causing this, have i2c library in ,is there a fix for this to get lcd with back pack to work. 8)

fps2:
Errror: lcd not declared in this scope, with 4 pin back pack on lcd, what is causing this, have 12c library in ,is there a fix for this to get lcd with back pack to work. 8)

You did something wrong. Unfortunately you have given us nothing to work with.

Don

  1. yes don i did some how all i know is that the i2c hello world wont load to the 328 chip so its not finding a file somehow, the display has power and sck ,sda hooked up but sketch not loading to chip anyway . so heres a pic of the back pack that is hooked up to display, its my understanding you have to use i2c sketches with the back pack.Item picture

IIC/I2C/TWI/SPI Serial Interface Board Module Port for 1602 display.

Why don't you take a look at this thread for some ideas?
http://forum.arduino.cc/index.php?topic=149018.0

Don