AVR-Based Serial Enabled LCDs Hookup Guide
Serial UART: Hardware Hookup
Here's how to setup your hardware for most of the Serial UART example code.
Note, some other examples require additional wiring (for example the contrast example requires a trimpot for variable control). We will show Fritzing graphics for each example covered in this tutorial. For the remaining tutorials, please look at the comments at the top of the example code for info on how to hookup the hardware.