dave-in-nj:
Welcome to the forum.please read 'how to use this forum' on tips.
it is a sticky post on the top of every forum. especially note #7as for your first post.
getting rid of all the un-neeeded text, it looks like you have two questions.#1) can you power from a 5v power supply salvaged from old phone
YES
#2) power , what is the best way ?
you will need sufficient power at each MOTOR. you are powering the motor with the needed power. your signals are low power so are secondary.
running power wires inside of walls is bit of a challenge, but will look the best.
AC is much better for distance than DC due to wire resistance.
I would run the wires on the surface to get the parts in and working and make it work the way I wanted, then consider how to hide the wires. each window location might offer different options.
Thanks so much for the reply! I did read the "please read" stickies. I'll keep it shorter if that's what everyone needs. I like to be detailed too though.
Thanks for.answering question 1. I'll run an extension cord (AC) up the wall behind a curtain and have the 5v power adapter hidden somewhere. I will NOT be running wires on walls. In the bedroom I will be removing some trim and hiding wires behind it.
#2: still not sure I'm understanding the answer and best method. If I'm going to power 3 motors from the board outlined in the YT video I linked do I still only needed a 5v 2a power adpater or does the adapter need to put of 15v 6a?
If I program the board so that the motors never run simultaneously will the 5v 2a power adapter work?
#3 is there anything wrong with the ebay Arduino uno wifi board I linked to?