General Purpose Input/Output (GPIO) boards allow you to connect a computer to other devices and then use software to control those other devices. So you could setup a computer to control lights, motors, robots, machines as well as "reading" information such as light levels, temperature, wind speeds, etc. Through this use you can actually turn a computer into a really useful real world device and this is going to be really useful to allow people's imaginations to run wild with real world applications.
Rob Edlin from Niddocks has obtained a GPIO board and will be giving a demo of how is works and how to use it to make things happen!
There will also be the opportunity to have a Virtual Raspberry PI Operating System installed on your laptop if you bring it along.
If anyone else has been doing anything interesting then please add the comment below and feel free to show case it during this evening.