1lb Horizontal Battlebot Combat Robot

thingiverse

Hello! This is a 1lb antweight robot built for an internal team competition. Since it did well and I don't plan on using this bot myself in the future, I've decided to upload it so others can use it and improve on the design! This design has been briefly converted to function as a full combat antweight robot, rather than the plastic antweight it was initially designed for. I've included an STL and DXF for a substituted disk that would theoretically be designed for metal, but take this with a grain of salt as I have not machined it personally. Before you build, please read the rest of the description carefully for instructions and materials! The following materials will be required for the build (keep in mind that this does not include spares): -3D printing filament (I suggest a form of Nylon) -M3x10 screws x4 -M3x5 screws x3 -Botkits battle-hardened gearmotor x2 -Banebots aluminum wheel hub 3mm shaft, 1 wide, 40 series x2 -Banebots 1-7/8" T40 wheel x2 -Your drive ESC/ESCs of choice (I used a scorpion nano dual channel esc) -Power Switch (Fingertech brand recommended but not necessary) -3S 300mAh LiPo battery -XT30 Female connector -Brass heat inserts for m3 threads (M3x5 will work fine) -Brushless ESC (Recommend 30a BLHeli_S) -Emax RS2205S brushless motor (These dimensions are important and cannot be substituted while preserving functionality) -M2x5 button-head screw x1 -Hot Glue/wire/heat shrink as needed during assembly Brief assembly instructions: -For the main parts, the body and top plate are designed to be 3D printed in a Nylon material. The disk is intended to be either 3d printed for beginners, or cut from a 2D profile of 1/4in AR500. -The motors are intended to be inserted from the outside of the body, they will be prevented from moving further into the body by the "shelves" printed into the body -Brass heat inserts must be added in the three holes outlined in the included picture, this way the top plate stays on reliably. If you don't know how to properly insert them, a quick google search will give you better tips than I would in the brief instructions. -Wiring, the entire system is a little much to describe here, if you need help with this part, then google will be your friend in this step as well! -The switch and motors must be secured with hot glue, the placement of all three can be seen in the included photo outlining the heat insert placement! -Weapon motor mounting is easy to understand visually, but note that the wires must first pass from underneath the chassis into the hole allowed for them to cross the "bridge" of the robot, where there is another hole allowing for the wires to recede into the main body of the robot for ESC connection. -Last note, the M2 screw included in the parts list must be inserted in the bottom of the hollow motor shaft with hot glue or superglue. This is a CRUCIAL STEP! Without it, the blade will not be parallel with the ground, and when the weapon spins, it will spin on the rim of the nyloc nut, which will cause the robot to vibrate when spinning. The design has been perfectly measured to this exact motor and screw combo, it cannot be substituted while maintaining functionality! -And that's it! I hope this bot lets people take their first steps into combat robotics by working with such a generic design example. The idea is that this robot will inspire you to create your own design some day, while sharing some examples of electronics and in-the-know tips! I may upload an update or assembly tutorial in the near future, depending on my schedule. You may notice that there are places for things such as wheel guards that are planned for future development, so keep an eye out! If you have any questions or if you've noticed that there's something I've missed, leave a comment and I'll check it out! Hopefully you have fun with this design, and I hope to see you out there! :) -Caden