Taken a while to get it all together. Have ongoing issues with the idler wheels. Connected up to bluetooth, arduino and a android handset for gesture control. http://youtu.be/AQbSv_OWjI0
Thanks for building and uploading! I love the colours too.
With the idlers it might help to sand or file the edges to help stop the treads getting caught. I hope you have fun with it nevertheless.
My main issues was with connecting the idlers and stopping them locking up against a nut etc on one side. Think i stopped it at moment.