sudomod

So being an idiot, I removed 2 ports from my usb hub (which works fine powering usb audio + one other peripheral). I have my hub connected with an OTG cable to my pi so that I could reduce the amount of things I need to solder to my pi (and for simplicity).

Why is this a problem you might ask?

Because I still need to connect a teensy LC and they appear to conenct via usb. So looks like I'll be soldering it to the board. I'm worried about hooking my teensy up by soldering because wermy mentioned issues with data wires needing to be twisted and others have mentioned issues with the pads on the back for usb (http://www.sudomod.com/forum/viewtopic.php?&t=1652 & http://www.sudomod.com/forum/viewtopic.php?&t=1345)

Basically, what do I have to look forward to when setting this up and should I hook my external usb port (ext connector slot) or teensy to my hub or the back of the pi?

Also, if you're interested in my hub (i hear peopl have problems powering multiple devices) which works for 2 usb peripherals at once, here it is on ebay: http://www.ebay.com.au/itm/401096989722 ... EBIDX%3AIT
I've tried most combinations of keyboard (LED razer & dell), usb stick, wifi and usb audio. It also has the possibility to be powered if you feel like hooking it up, but the listing has nothing about the power required and comes with no cable/power supply.

I have no idea about the Teensy as I never used one in my build.

It is so much easier to wire up the buttons to a respective GPIO pin and then have a common ground. You can use Adafruit's Retrogame to map the buttons to RetroPie controls.

Saves ALOT of space in the case!