***DISCLAIMER: Some of this information could be better or is inaccurate. Specifically how big of a battery you need. I plan on making a new tutorial eventually, but for the most part this tutorial is accurate.***
Have you ever wanted to build a combat robot (battlebot), but gave up because you didn’t know where to start? Well, hopefully this tutorial/instructable will help. I condensed a lot of information down into a step by step process, taking out most of the stuff you really don’t need to know, but leaving the crucial information. This tutorial is focused on the insect weight robots (75grams to 6 pounds), because the majority of competitions held are for insect weight robots, and they are the least expensive.
Throughout this tutorial I will be putting a robot together for demonstration. I used wood for a material,and you shouldn't. The reason why I used wood, was because I was just putting the robot together for this tutorial, and I am never going to compete with it. In fact I already threw it away, because it was a mix-match of a bunch of different ways to do things.
Step 1: Weight Classes
Before you do anything else, you have to pick a weight class. The weight constraint helps determine which parts are needed.
Insect Weight class:
• 75g Fleaweight (not common)
• 150g Fairyweight (5.3oz)
• 1lb Antweight
• 1kg Kilobot (Canada Only)
• 3lb Beetleweight
• 6lb Mantisweight (not common)
I suggest building an antweight or a beetleweight as a first robot, because you don’t have to be as concerned about weight as with lighter robots. It is less expensive to build a antweight, but you will find it easier to stay under the 3 pound limit. Also, beetleweights are more common than antweights, but any competition that has beetleweights will have antweights, and vice-versa. So, it is really up to you, just pick a weight class and go with it, you can always build another robot for a different weight class.