Raspberry Pi

http://www.pi-supply.com/product/shortcrust-perfect-base-raspberry-pi/
http://www.amazon.co.uk/Momentary-Tactile-Button-Through-3x6x4-3mm/dp/B008DS188Y/ref=pd_rhf_cr_s_cp_2_HGJ1?ie=UTF8&refRID=112M3ZCP6NGFJC34EWAA#productDetails
http://www.queryadmin.com/435/create-image-slideshow-raspberry-pi/
fbi -d /dev/fb0 -a -T 2 -t 5 *.jpg
sudo fbi -noverbose -d /dev/fb0 -a -T 2 -t 5 *.png
Script to connect dongle

./sakis3g  connect --console APN='CUSTOM_APN' USBINTERFACE='3' USBMODEM='12d1:1003' OTHER='USBMODEM' MODEM='OTHER'  CUSTOM_APN='giffgaff.com' APN_USER='giffgaff' APN_PASS='password'