Materials list

Wandering arround the internet I found this:
http://www.talk2myshirt.com/
which ought' to be a useful resource for us

First off, we'll need an android device!
Looks like it will be between $150~$500 for a device, be it a phone or tablet (wouldn't that be fun).  I think we should get the latest phone we can afford, a faster phone makes everything easier.  One thing to consider though is that we may need to root the phone (I'll discuss this more later), so we should pick a model that's been cracked.

Underarmor or tight-fitting underclothing of some sort will be necessary to play with.  Some of us already have some, but it may be worthwhile to buy a fresh piece:
http://www.underarmour.com/

We have a couple choices as far as interfacing with the phone goes:
We could use the teensy pad, which has development support for windows, mac, and linux.  There is also source code available.  We could use a rooted android phone equipped with GCC to compile the source natively and we *might* get the teensy working, I have my doubts about this though.  Also, using the teensy makes any bluetooth option more complicated.

There is the ever present Arduino (and its assorted variants), for which there are android libraries.

A simple option that rather appeals to me is the lily pad Arduino module + bluetooth dongle option.  If we do this, as the lily pad board is very minimalist, we will need a usb to FTDI (the cable supported by the lily pad) board like this to program the pad before bluetooth is working.

we'll also need a power supply, a coin cell is good enough for the lillypad and a few LEDs, but I'm not sure about the power requirements of the vibrating pads.

There is also the option to include a compass module in our shirt, if we wan't it to actually work we'll probably need something like this.  Its' kind of expensive (150 :( ), but it works when tilted (which ours definitely would be).  There are cheaper options that might be made to work, but they would require a good bit more effort/time on our part

As far as vibrating pads, I haven't been able to find any, I think we should talk to dr. Hammond about this. We may need to alter our power supply if they are very demanding.

we'll also need some way to move data/power arround:
conductive ribbon is a good option for our project.

I would like to note that all of this stuff is not waterproof, which would be a big plus for our hardware.  we would have to make some alterations, primarily in data/power transmission to make this waterproof (I think the rest of the hardware can be potted/encased to make it waterproof).