Yes, we've seen an XBee radio interface with RC robots before, but Quantum Robotics' open-source Xbee handheld controllers have enough gimbals, push buttons and toggle switches to leave us starry-eyed. The Q2 and Q4, both open for funding on Kickstarter, use a XBee wireless transceiver to transfer data and a Parallex Propeller to act as the main processor, and both models put most controllers to shame with a ton of options. While the Q4 uses four PlayStation-style joysticks, the Q2 sports two RC
