Before I begin describing the build I'd like to give a shout out to Cameron Wiebe for his excellent post on building a Raspberry Pi picture frame some of the instructions below come directly from his article.
What I Built
A digital picture frame that automatically checks a gmail account for new messages then downloads any attached images and automatically displays them. I configured the gmail account for IMAP, and used a Perl script to query the account.
What I Used
Things I bought:
Raspberry PI B (512 MB): $39.99
NetGear USB wireless card. $25.00.
USB keyboard: $7
USB mouse: $3
Things I had laying around:
4GB micro SD card with a bunch of adapters. See pic below.
7" Polaroid monitor, left over from a two screen auto DVD player
5V 700mA wall wart left over from an old Nokia cell phone
12 V wall wart to power the monitor borrowed from a USB switch.
4 port unpowered usb hub
Setting up the Raspberry Pi
I started with the instructions here , then went here to download Raspberry Pi Wheezy. I have a MacBook so I followed the excellent instructions here to copy the image to the SD card. Be patient the transfer takes a few minutes. Please read the instructions carefully. If you do it wrong you could trash your system.
Now plug everything in and power up. I was pleasantly surprised everything started up without any issues. Read Part 2 for complete details to get your Digital Picture Frame up and running.