Step 1: Design and Concept
Now that I had the weapon and general design of the robot I could begin work on designing everything else. I first determined what components I wanted to use. I went with two Fingertech TinyESC's and 1000rpm motors with 2 1/4" wheels for drive because the combination is fast enough for a weaponed robot. I decided to run the robot at 3s or 11.1 v because I already had 3s lipo batteries and a charger left over from another project.
To actually design the robot I used Autodesk Inventor. I first modeled out the area needed by each robot component and then figured out how small I could make the robot and still fit everything. The other challenge was keeping it under weight. Designing it in a CAD program made everything easier than the other design method I use which is to physically lay out each component and then draw an outline on cardboard.
Step 2: Making the Robot
I also don't have any pictures of wiring the robot because soldering requires two hands and my camera can't levitate.
After assembling and weighing everything I discovered that my robot was 1/2lb under weight. so I decided to upgrade the back armor from 1/32 titanium to 1/16" spring steel and wrap it around the sides to act as wheel guards. I also added fender washers to the wheel hubs to hold the wheels on better because during testing the wheels got ripped off when the robot hit stuff with the weapon. These additions brought the weight up to a respectable 2lb, 13oz
Test video of the weapon vs 1/4" thick steel. (please excuse the one handed driving)
1/16" thick titanium frame
3s 1000mah lipo battery
custom hubmotor disk weapon, spins at 6000rpm giving it a 109mph tip speed
2 wheel drive with 1000rpm motors, tinyESC's and 2 1/4" wheels
Step 3: More Information
For info about competing check out
The Builders Database This is the place where you can find out about and register for competitions
North East Robotics Club The premier robot combat event host in the North East
Combots/Robogames The largest events on the West Coast. They run weight classes from 1lb all the way up to 220lbs.
For parts check out
The Robot Market Place They sell everything and anything related to robots
KitBots.com for competitive 3-12lb kits and parts for robots up to 30lbs
FingerTech Robotics for 1-3lb robot parts and an awesome 1lb bot kit.
HobbyKing for cheap stuff from China