Rp 5 robot tank track chassis arexx engineering rp5 ch02 p the arexx rp 5 robot tank chassis is a tank track style base that is an ideal base for building mobile robots the chassis has built in motors and gearboxes which you can easily interface with picaxe genie arduino or any other microcontroller system as well as radio control systems p p the rp5 tank track chassis is supplied ready assembled ndash just add your own control system and batteries p arexx rp5 ch02 robot tank chas