Connecting a touchscreen LCD to an Arduino Due involves several considerations, including the LCD's communication protocol (SPI, I2C, parallel, etc.), its power requirements, and any additional functionality (such as touch sensing) that needs to be supported. Assuming you're working with a typical SPI-based touchscreen (which is quite common for smaller displays), you'll generally need connections for power (VCC, GND), SPI communication, and touch sensing.

Given the components listed in your project description, and without specific details about the touchscreen LCD (like model or additional communication pins it may require), we'll proceed with a general approach for an SPI-based touchscreen LCD that requires connections for power, SPI data transfer, and touch sensing.

First, ensure your touchscreen operates at a voltage compatible with the Arduino Due, which can be either 3.3V (preferable for direct connection) or 5V (might require logic level shifting).

Here's how to connect it using the SPI interface for the display and touch controller (assuming the display supports SPI and does not simply use digital I/O for touch sensing):

Remember: This setup assumes a typical SPI-based touchscreen with integrated touch sensing over SPI. Your actual touchscreen might have different requirements based on whether it uses I2C for touch, additional control pins, or differs in voltage levels. Check the touchscreen datasheet for exact wiring and adjust the connection points accordingly. Also, if your touchscreen operates at 5V, and you intend to use 3.3V logic signals (for direct compatibility with the Arduino Due), ensure the touchscreen is 3.3V logic compatible or use logic level shifters as necessary.