I need a sanity check.
My house is wired with a Coax cable that is currently completely useless to me.
I want to use the coax wiring to send 5V DC power for small appliances (like Raspberry Pi's) throughout the house.
I want to use this PSU: https://www.amazon.ca/gp/product/B00N2RW72C/ref=ox_sc_act_title_2?smid=ASNOLMMI4SF6N&psc=1
that will feed into a DC step-down and a splitter like this: https://www.amazon.ca/gp/product/B00DIGACBU/ref=ox_sc_act_title_3?smid=A3DWYIK6Y9EEQB&psc=1
I am aware that more length = more resistance so I am wondering if I am good with slightly increasing the voltage on the source side and measuring on the output until I have an exact 5V.
It just feels like I am missing something.
EDIT: Looks like (and makes total sense) going with the 12V and dropping it at termination point is the way to go. Thank you everyone.