Free Touchscreen in cheap car back-up monitor for Raspberry Pi

I have a great find to share with everyone, I found a resistive touchscreen sensor embeded in a cheap car back-up monitor that i was using for the Raspberry Pi.

Cheap car back-up monitor for Raspberry Pi without the stand

As you can see, I have removed the stand/leg thing because it was standing in my way. I bought this from BestBuy because I wanted it then and didn't want to wait for a week for one to ship from eBay (I overpaid by double I think).

Small UPS for RaspberryPi

Some time ago I went into Radio Shack and found a small USB rechargeable battery that has a retractable USB connector on one end and a microUSB on the other. It looks something like this but it is only 800 mah and was on sale for $8.

I wanted to use it as a power source for my RaspberryPi but wanted it to use the battery only when mains where off. I looked around for circuits that allowed for instant swithcing between 2 power sources and actually found something I could make but it was pretty complicated.