Hubsan have just released this little device, which raises the question: Just how small can they go? http://www.wonderlandmodels.com/products/hubsan-q4-nano-quadcopter-24ghz/ There's a video in the product description showing off just how small this thing is! Looks like a nifty little piece of kit, especially for something so cheap!
Ordered one! Just to have the world's smallest quadcopter. If Hubsan make another one I'm going to need another pair of specs.
