This is my first arduino project and I need help. I have the Arduino Mega 2560 and the I2C/TWI LCD2004 Module from dfrobot. I wired it up just like shown in the diagram. When I plugged in my mega via the usb port the lcd lights up, but no characters. I then added the files needed to my library (.h, .cpp,.o), compiled and uploaded the I2C_LCD2004_Sample.pde to my mega and I get the leds flashing on the mega as it is uploading and the lcd still shows nothing, the lcd stays lit up but no characters on the screen. How do I know if I'm doing something wrong or if my LCD screen is defective? Any and all advice would be greatly appreciated.
I have GND connected to GND VCC to 5v SCL to analog In 5 SDA to analog in 4