hello all , here is a tiny update. In order to better demonstrate practical use of discrete QR code navigation I need to incorporate the sensors onto a live robot. Initially I was going with a mini turtle style platform , but I simply do not think it gives this Hackaday competition justice using a cheap dinky platform. So in true Hackaday fashion we need to void some warranties!! I have some donors available and I believe the Wowwee Rovio could be a good fit for teardown and rebuild with modern electronics and the Invisible QR code tracking system. I will implement both bottom , forward, and top reading for general use. I am tinkering around with the idea of a rear facing camera for docking purposes.