This is a slightly manual process but free and fun.
First download the Photile Live Wallpaper app by Joko Interactive from the Google Play store to your device. There’s a free and a pro version. (The pro version has more options in settings.) Photile turns any picture you choose into a grid of floating, fading, sliding tiles. Requires Android 2.1 and up.
Now go to your Pinterest app and find the images you want displayed in your Pinterest live wallpaper slideshow. Save these images to your Android device. (On my Samsung Galaxy S3 I do this by pressing the menu button and then selecting “Save to Device”. This saves the image to a folder called “Pins” in my phone’s picture gallery.)
Open up the live wallpaper settings. On my phone running Android version 4.1.2 this is under…
Settings – Display – Wallpaper – Home screen – Live wallpapers
Select Photile and click on Settings.
Select “Picture” and then “Choose Image”. Pick any image from the folder on your phone that contains the Pinterest saved images. On my phone this is under “Gallery” and “Pins”.
Back in the Photile Settings, go to “Picture” and then “Slide Show Options”. Check the box next to “Slide Show (Beta)”. This will add the other pictures you saved in the same folder to the live wallpaper as a slideshow.
Also in Photile’s Settings you can adjust the interval between pictures, the background colour, and adjust things like whether the tiles move or fade or react to being touched etc. Have a play around to find what you like.
When you’re happy with your live wallpaper click “Set Wallpaper” and you’re all done!
Of course this app will work with any images on your device. I just like using my Pinterest pins the best 🙂