Hi, just getting ideas for a future build.
What is the minimum amount of pins required to run a touchscreen?
Are there different types? From what I can see there's screens on a shield (use up all the pins?)
Or a serial touchscreen (uses less pins?)
I am looking at a project where I will need 9 outputs to power relays.
On the touchscreen, there will be two options, to power the 9 outputs in 2 different sequences.
Thanks