First off, he’s included level converter chips to managed the 3.3V/5V issues. Second, he uses latch chips to translate eight pins on the Arduino Mega to sixteen pins on the display.

The Arduino Mega 2560 R3 is positioned on a suspended platform, with the anodes controlled on the Digital Pins as opposed to the cathodes on remapped AnalogInputs.

Some of the parts you will require include an Arduino Mega 2560, 2.4 inch TFT touch Screen LCD with inbuilt SD Card Slot, 4GB MicroSDHC, 20 Pin ZIF Socket and others.