Tube delays light display

Tracy Tsang, an MA student at Middlesex University sent an email recently to let me know that she is using the my London Underground tube delays RSS feed to activate a piece of hardware, which she calls “The Tube”, to display line status information via LEDs in a plastic tube. This forms part of her MA thesis.

The Tube shows all the lines on the London Underground that are currently running with delays. The strip with corresponding colour is lit up using LEDs as the data is received from the TFL website.

Having checked site logs the other day, I realise that this RSS feed is actually the most popular thing on this site. Has anyone else done anything interesting with it? Answers on a postcard (or email) please.