Project Name: Plank Battles Controlled by: Programming Programming Difficulty: Easy-Medium Construction Difficulty: Medium-hard General Comment. Any battling robot gets the kids enthusiastic. This is no exception
Rules FOR STUDENTS
You must use: -1 NXT or EV brick -up to 3 motors
You must: Build a robot that can battle against another robot on a large plank. One robot starts at each end. The first one to fall off, loses. If neither robot falls off, whichever is past half-way for 5 seconds, wins.
Tips For students
Tip: Cars with four wheels will go straighter. Especially if both motors turn one axel each. Tip: Cars that use cogs will have better torque. A small cog on the motor and a big cog on the wheel will make the wheels turn slower, but stronger. To use cogs, the wheel's axel can't go through the motor's hole.
SAMPLE PROGRAMMING (Older icon-based coding)
SAMPLE PROGRAMMING (Newer word block coding)
When the touch sensor button is pressed, the robot will travel at 50% speed until it "sees" the other robot (within 10cm) then it's speed will double (100%) and a weapon will be activated using a third motor (A)
TEACHER INFO
When I have done this, I put the plank on three or four cube foot-stools or books. That way students could not construct a robot that 'gripped' under the plank. A painters plank is ideal. Grading option: The more battles won, the better the grade. If you are recording wins make a copy of this Google Sheet to help you score