Best way to power a Nexus 7 and USB hub?
Hey guys, I'm brand new here but am in need of some assistance, so please bear with me!
I have a 2000 Toyota Celica GT-S and I'm interested in using a Nexus 7 tablet as the head unit. I've taken a lot of inspiration from here:http://forums.nasioc.com/forums/show....php?t=2434390.
What I want to do is just drop my current head unit back into the dash and then modify my current center console to make the Nexus 7 tablet removable, but also good looking (flush, no gaps between trim and bezel, etc). I also want to wire up a powered USB hub so that I can have the ability to add storage and other USB peripherals later on down the road. What I have noticed is that some people on the NASIOC forum have had trouble with power consumption. That's why I'm coming here!
I've been researching this for a while now and thought I had most of it down pretty good, but now some new ideas have come from the reading I've done today. Here's what I'm thinking...
I'd like to use a PSU, like a PicoPSU or something along those lines, to supply the needed power for keeping the tablet charged and running a powered USB hub. Probably a bit overkill, but it will allow for expansion later on as well.
This is the setup I have in mind, after my research this morning and just some basic searching for parts.
1. PSU: PicoPSU 120W PSU I don't really know what kind of power I'll need, this could be overkill or not, I don't know.
2. USB Hub: Anker 4 port USB 3.0 + Charging port 12V powered USB hub, should make things a little less complicated, if I have things straight in my mind... more on this later.
3. Cables: Micro USB Host OTG Cable
Those are really the only major things I can think of... I'll need some USB extensions, and I might add a DAC later, but this covers the gist of it I think.
I plan on mounting the PSU in the center console area, closer to the Nexus 7 so that the cable powering that doesn't need to be so long. Then I want to mount the USB hub in the center console/arm rest that sits between the driver and passenger seat in the front, which would have pretty easy access.
Now of course I have a few questions...
1. Is this feasible or am I going way overboard?
2. Will I be able to get the 12V from the PSU, for the USB hub?
3. Same goes for the 5V, will I be able to get that from the PSU and have it be able to charge the Nexus 7? The Nexus 7 charger specs are 5V/2A.
4. I'll use the cable I listed to plug the USB hub into, and then can I add a micro USB male end to the wire I use for power from the PSU, if that works?
Thanks if read this all, more thanks if you answer! :D