Two robots face off and try to throw each other off of a table! It'll make more sense after you watch the video...
Although designed for children in grades 4-6, I think just about anyone can have fun with this. Even parents can't resist trying it out!
The bots are assembled from four components built separate from one another: the base, the stand, the arm, and the hydraulic system. The hydraulic system uses plastic syringes as pistons and water as the hydraulic fluid.
Step 1: Materials, tools, and design criteria
- Craft sticks
- Craft cubes
- Cubes with 5/32" holes*
- Robust wooden skewers 1/8" diameter
- Decorative woodcraft (optional)
- 10ml plastic syringes (or bulk)
- Vinyl tubing
- Adhesive bumpers
- 4" cable ties
- Hot glue guns
- Glue sticks
- Multicutter (recommended)
- Food dye (optional)
- The base of each JudoBot must fit within a 10-inch square. This is to prevent students from building sprawling robots that cannot be flipped.
- Material limitation: craft sticks (50), craft cubes (10), cubes with holes (10), syringes (4), adhesive bumpers (10), decorative woodcraft/extra woodcraft (5), everything else within reason.
Material limitations are in place to promote resourcefulness and to reduce cost. Also, clever students can no longer pile hundreds of sticks onto their bot in order to make it too heavy to move.
You may choose to use other materials. This is what I use because I need to streamline my materials to fit with the other projects in my program, as well as keep the cost per project low.