MecanumBot - VEX Robotics Chassis

thingiverse

This is my latest VEX robotics chassis creation, continuing on the theme of my previous designs. It's a four-wheeled robot using VEX EDR components that features programmable motors and a sleek design. I designed it to be extendable by attaching bumpers or mounting points to the front and back of the chassis. The compact version two (purple in photos) is recommended, while version one (black in photos) offers insight into my design process. This robot can use either 3-wire or 2-wire EDR motors but not those with Integrated Encoder Modules. I believe few people will want mecanum wheels with integrated encoders; if I'm wrong, I'd be happy to adapt the design. Print Settings Printer Brand: MakerBot Printer: MakerBot Replicator (5th Generation) Rafts: Yes Supports: Yes Resolution: High Infill: Default After printing, attach motors to the inside of the chassis using motor mount screws. A lock collar will secure square shafts in each slot by the motors. Teflon washers between the chassis and each wheel reduce friction, while a lock collar on the outside holds them in place. Attach the battery to the bottom of the robot using twist ties. Attaching nuts to micro-controller mounts can be tricky, but I used a wrench from the side to position them properly. Custom Section Programming it One example is available at http://www.robotc.net/blog/2011/11/22/vex-mecanum-drive-using-robotc/