Wallpaper Wednesday - A day in the Texas sun, Evening Colorado Sky, the full moon

Sometimes changing the look at feel of your device is as easy as just simply changing your wallpaper. Whether you are a fan of abstract art, landscape photos or just a simple logo, odds are that we have something for you in our Android Wallpaper Gallery. If you haven't seen the gallery yet then you are missing out on some pretty awesome wallpapers that others have uploaded, and even worse is that you haven't shared your favorites with us.

Luckily sharing wallpapers with the rest of the Android Central community only requires a couple of clicks, and then everyone can enjoy them. Be sure to check that you are logged in when uploading these so we can give you proper credit for the greatness you share with us. Browsing the gallery is a breeze, you can browse the top downloads, the newest uploads or even have them randomly displayed. Each week we will showcase some of the top uploads here on the front page, so how about sharing a few with us?

Texas Instruments shows off ultrasonic stylus that can work in three dimensions

At Mobile World Congress 2012, Texas Instruments was demonstrating a stylus that communicates its distance from a tablet over ultrasonic frequencies. The tablet in this demo has a microphone in each of its four corners, which can pinpoint exactly where the stylus is pointing at the screen, even if you're not touching it. Of course, the stylus also works perfectly well along the two standard planes, but it's particularly cool when you pull back and the model correspondingly zooms out.