I am creation a customized Arduino Mega2560. I want to add to it a 3.95 TFT ILI9488 touch screen (picture 1).
I want to know wich pins are used. I am asking this, because i want to use the unused pins for other matters (to activate relays).
Also, can some one advise which pins are used for the display, the Touch screen and for the SD Card (i will not be using the SD Card, so i will be using those pins to connect some sensors).
Finally, as per my readings on this forum I guess i Should use those libraries UTFT and R61581.
As far as I know, there is no official UTFT support for ILI9488. You certainly do not use R61581.
The shield will mate naturally with a MEGA2560 or a Due. It uses digital #22-37 for the data bus and digital #38-41 for control signals.
The Touch controller use digital #3-7.
The microSD will NEVER work reliably.
You can use any of the other pins for whatever you want.
The UTFT and UTouch examples should all work with the constructors in the sketches. (choose ILI9486 as the display model i.e. first argument)