My take on combining Pololu's Zumo Robot for Arduino, Sparkfun's Microview, XBee radios, and MIDI Protocol to build a very expensive toy car.
Control the tank's movement by depressing directional buttons, speed determined by "A" option toggle button.
Uses MIDI protocol to send Note-On / Note-Off commands from remote to tank. MIDI note velocity determines speed of vehicle. MIDI clock & continue commands convey "connected" heartbeat. Remote controller's Microview display indicates heartbeat radio 2-way communication, vehicle's battery level, and remote's button status.
Source code available at: https://github.com/paulgorman/robot-tank