First time posting here, be nice.
I accidentally stumbled on forum with a Wii U pad build whilst planning a handheld for streaming games.
I realise a lot of people are doing this, but the Wii U's Gamepad is the perfect premade case for a project like this.
The whole thing has me fascinated and I can't wait to start my own.
Let's start with that I have planned so far.
We'll start with the inner workings:
I'll have a micro USB coming from the bottom, next to a female hdmi port for external use(I will be attempting to make a docking station, more on that later)
The Micro USB board with battery protection is wired directly into a Adafruit Powerboost 1000C.
The Powerboost will have a 8000mAh lipo battery connected to it.
Then the Powerboost will output to an Internal HDMI screen, Pi Zero W, and a speaker circuit.
The battery indicators on the Powerboost will be wired to the battery indicator lights on the bottom of the pad.
The button layouts will be basically using a teensy. I've not planned that out and pretty much am only going to copy the originals.
The audio, I understand how it works after alot of reading, but christ help me if I actually try to wire it up
I have a USB DAC which will output sound from the Pi, wired directly to a wheel styled potentiometer, which will go to the headphone port on top of the case. The headphone jack will be wired to an amplifier that will be used to output to the original pad's speakers.
My one question with this(apart from please god how to I do electronics and wire this without fires) is this is based on the original forums design, wouldn't I receive the same results, if I used a Pi 3, using the onboard jack port?
Now, here's the territory I'm stuck in. With limited to no funds it's hard to plan for this part.
I want to incorporate something that will control the internal screens power via the TV button on the front of the pad.
I've gone through many different ideas in my head: Using the GPIO to send power and turn it off, HDMI Switches + HDMI Splitters
I've even been told that the Official Pi 7" Touchscreen's adaptor board can be used with the 6.5" screen I've planned to buy (because of case limitations), the main problem is I can't bare/afford to buy the 7" screen only to use the parts it came with.
The best option I've found so far is the Official 7" board
This uses DSI which plugs directly into the Pi's screen port, this will allow me to easily switch between HDMI and DSI
This is also powered by USB, from what I've been told it's possible to turn power off to USB, thus controlling the screens power, and paired with switching audio/video to HDMI this will technically turn off audio aswell.
I'm rambling on about controling the power to the internal screen mainly because I've read the Powerboost outputs a limited amount to both the battery and the internals, thus not allowing to charge while on and plugged in..just slowing the discharge of the battery. I'm hoping that in turning the screen's power off, this allows the battery to actually begin to actually charge.
This will hopefully be made along side custom/customised Wii U Dock that will have a hdmi and micro USB sticking upright, which will connect the equivalent ports on the pad, wherever I stick them..still not sure
OH, one big thing is I can't find Official 7" Touchscreen adapter board ANYWHERE. I only need the board itself, not the screen. Any help there would push this build along greatly.
And don't forget to ELI5. I read this back and it looks like I'm boasting in a way..but I'm begging for help and ideas, I've never ventured this far into Pi designs and electronics territory. The most I've done in electronics is the adding and removal of solder, I'm not sure where to shove my resistors.
TIA