I'm a start a project for me.
You are a what?
I need to control :
- 1 Arduino Uno
How do you want to control the UNO? What will be controlling it? What will it be doing?
My question is simple, is it possible to connect all of this stuff in single Uno board
Duct tape works wonders. Of course it is possible to tape it all together.
You can NOT drive a motor directly. You need a motor controller in the mix, too.
How many pins are needed, and which ones, for the "TFT Screen Nextion 3.5"" depends entirely on WHICH "TFT Screen Nextion 3.5"" you plan to use.
It is impossible to guess how many pins are needed for "some" LEDs. If some is 3, no problem. If some is 300, more challenging but not impossible.