Tuesday 20 August 2013
MEng students from the School of Electronic and Electrical Engineering have gained worldwide attention for their impressive third year group design project.
Thomas Carpenter, Oliver Peel, Adam Clarkson, and Laurence Bird created a 3D spherical persistence of vision (POV) globe which uses smart-phone apps to control a stunning display of graphics and live internet-driven information.
The project had already received huge praise from within the University, but when an image of the globe, portraying a holographic image of the Death Star from Star Wars reached twitter, a re-tweet from TV presenter Dara O Briain made the students famous.
The POV globe is a ring of LEDs that are rotated at high-speed. At this speed our brains interpret the moving ring of light as a solid, spherical surface. By changing the colours of the LEDs very quickly, the team are able to display images on the spherical surface. This effect is known as persistence of vision.
Students are interviewed after their project presentation
To power the globe, the group used the single-board computer Raspberry Pi (RasPi), which is cheap and small yet still powerful. It is capable of displaying any application that runs on RasPi in HDMI, such as BBC Iplayer, computer games and images. The globe is interactive too and is controlled through a bespoke iOS application that communicates with the RasPi over wi-fi. The app can be used to control the home screen of the globe as well as individual apps running on the RasPi (e.g. world weather).
Although the project shot to fame through its image of the Death Star, the team are keen to highlight the inter activity of the display more and have produced the blog Interactive Persistence of Vision Globe to highlight their achievements.
There were several other successful group design projects from the school this year, visit the Group Design Project Web page to read more.
EE Times - POV Deathstar Doubles as Spherical Display
The Inquirer - Raspberry Pi used to make holographic Death Star
Discovery News - Tasty Tech Eye Candy of the Week