Since I had my first printer I was interested in small bots. I haed the idea in mind of making one full printable rover. I watched a project, Caterpillator, I the links idea like a tank was so nice, so i explore that idea and developed my own. The rover works with an analog proximity sharp sensor (https://www.sparkfun.com/products/242), an adafruit servo shield (http://www.ebay.es/itm/Motor-Drive-Shield-L293D-for-Arduino-Robotics-Mega-Uno-/171370859610?pt=UK_BOI_Electrical_Components_Supplies_ET&hash=item27e67fcc5a), an arduino uno, a hobbyking battery (http://hobbyking.com/hobbyking/store/__6788__ZIPPY_Flightmax_500mAh_2S1P_20C.html), lipo tester (http://www.ebay.es/itm/Tester-Comprobador-Digital-Sensible-de-Tension-de-Baterias-LIPO-RC-G9-/161258347878?pt=LH_DefaultDomain_186&hash=item258bbf1d66), 2 ebay motors (http://www.ebay.es/itm/4pcs-Intelligent-Car-Gear-Motor-Robot-Gear-Motor-TT-Motor-for-Arduino-/130963329731?pt=LH_DefaultDomain_0&hash=item1e7e05d2c3) and some M3 screws (I use allen). All of this is cheap, I think less than 50€ all. My files are: _eslabon_1 -> One link of the chain that cover the wheels. You need to print 50 links, 25 for each chain. eslabones_6 -> 6 links in a row. You can go faster printing. brazo sensor -> Sharp sensor mount chasis -> the main body Chasis_top -> second main body, where the electronics is. Chasistapa* -> covers rueda_dentada_motriz -> Wheels for the motors. You have to print 2 rueda_dentada_no_motriz -> Wheels for the axis. You have to print 2 eje_8mm_110mm -> 8mm axis. I did not use a printed one, instead i use carbon fiber 8mm kite tube (http://www.decathlon.es/tubo-fibra-vidrio-cometa-8-mm-id_1103566.html). If you printing here you go. I am doing some test and finishing my print, so is not tested already. I will update info in the next days. Hope you like!