The schematic is quite easy. Follow the connections as below but first have in mind we have to upload the TFT file to the display so check the next chapter. Anyway, the connections are easy, the UART pins from the display connected to the Arduino and a few push buttons with GND connection and a digital pin of the Arduino as well. Power is supplied from the USB cable and we need to share 5V and GND with the second Arduino for the RGB colors. That's it.