Activity Workshop
 

The basics

Let's get an overview of the board and its (many) connectors. This is a Model B, revision 2, made in Wales. As mentioned earlier, this model has been superceded by the new version 2, which has a different layout but much the same size. This one is shown bolted to the bottom half of a red plastic case, which is sold separately.

You can hover your mouse over each of the major components to see what it's called or what it's for.

Composite video out Audio out (headphone socket) USB (2 sockets) Network socket (ethernet) HDMI out (for monitor/tv) Power in (microusb) SD card goes under here GPIO pins (for connecting to other electronics) CPU, RAM and Graphics Ethernet controller and USB hub Camera serial interface (CSI) Raspberry logo Capacitor for power supply JTAG connectors (for debugging?) Display serial interface (for connecting a little screen) LEDs Mounting hole Mounting hole
Image of Raspberry pi in case

What else do you need?

It comes just as a board, so you'll need some extra gadgets to get it to work properly. As a rough guideline, here are some of the many possibilities:

Powerinto the microusb power socketvia a mains chargerfrom the wall socket
via a USB cablefrom a powered USB hub
SD cardin the SD card slot  
Video outfrom the HDMI socketvia a HDMI cableinto the HDMI socket of your tv / monitor
via a HDMI cable and a HDMI/DVI converterinto the DVI socket of your monitor
via a HDMI/DVI converter and a DVI cableinto the DVI socket of your monitor
from the yellow RCA socketvia an RCA cableinto the yellow auxiliary input (not the antenna!) of your tv
via an RCA cable and an RCA/Scart adapterinto the Scart socket of your tv
Sound outover HDMI if you're using that  
from the headphone socketvia a 3.5mm headphone cableto headphones or speakers or amplifier
via a 3.5mm/Cinch adapter and Cinch cableto hifi amplifier
Internetfrom the ethernet socketvia an ethernet cableinto your router
from a USB socketmaybe via a cable or hubinto a USB wireless dongle
Keyboard / Mousefrom USB socket(s)via USB cableto a wired USB keyboard and/or mouse
via USB-PS/2 adapterto a wired PS/2 keyboard and/or mouse
via USB wireless dongleto a wireless keyboard and/or mouse

Because there are only 2 USB sockets available on this model, you may have to use a (preferably powered) USB hub if want to connect multiple USB devices (newer models already have four USB sockets as standard). A case is optional, and there are currently many different colours and styles for sale. Just make sure that the case matches the model, as the ports are in different places and some such as the A+ are of a different size.