I'm a complete beginner to Arduino and electrical projects at all, so please be gentle.
The Goal: I ultimately want to be able to tap an NFC sticker (there will be 8 different NFC tags) from another room and have the Arduino hit the corresponding button on my bed remote to move it.
The thinking (software side): I think it makes the most sense from a software perspective to have Tasker on my phone to manage the NFC part of it and have it browse to a link with a payload that tells the Arduino which relay to power.
The thinking (hardware side): I'm a little lost on how I properly set this up as far as making sure I have enough power to do everything. I've got:
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An 8 relay module (from Amazon, here: https://www.amazon.com/dp/B07C8LSXKC)
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An Arduino Elegoo Mega 2560
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The bed remote (which I believe needs 5V, based on the fact the remote takes 3 AAA batteries)
I know I'm going to need some sort of wifi hookup for the Arduino, but I'm not sure what I specifically need.
My questions are:
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Do I need to figure out some way of independently powering everything? Arduino to USB wall cube, maybe the relay to a 9V battery, remote to a 9V battery? Or is there a smarter way of doing that?
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Any suggestions on modules to get the Arduino hooked up to the internet?
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Tbh I'll take any advice anyone's willing to throw at me, as long as that advice isn't "give up".