I am currently designing and programming a project that uses a TFT LCD Screen on my MEGA 2560. The Screen Adapter Shield appears to use up all of the digital I/O ports. I need to use two outputs for my project. The first will be a PWM port to control a motor so I should be fine there. However I need to use a digital signal to run to a polarity switching relay.
1.) Are all of the digital I/O actually being used by the LCD screen?
2.) If not, does anyone know which pins I could 'steal'?
3.) If all the digital I/O is being used, is it feasible to use one of the PWM outputs as a digital I/O?
4.) If not is there another option without buying and integrating other accessories?