We calculate the number of rotatios when a gear system is involved. The driving wheel will have to do a number of rotations for the driven wheel to rotate to a desired number of degrees. In our specific case when the driven gear wheel is rotate to about 90 degrees the legs will lift the robot.
In this tutorial we will go through a solution for three of the missions from 2012 FIRST LEGO League competition using only one attachment. By accomplishing the medicines, strength exercise and cardiovascular missions we earn 55 points. You can download the programs from the link in the Materials tab.
The way you move the robot is always imprecise. Don't TRY to fight with this. Programming motors for competitions like the FIRST LEGO League (FLL) or World Robotics Olympiad (WRO) is not very different from programming the motors in the STEM classes. But there are a few things you should have in mind.
In this episode, we introduce a LEGO Mindstorms EV3 version of competition robot construction. It is a modular construction, with medium motor for additional attachments and two light or colour sensors for orientating on the field.
User this flywheels construction for experiments in physics. Start rotating the wheel and they would accumulate energy. You can try to calculate this energy and to measure how fast it would be consumed.
The construction is built with LEGO Mindstorms EV3
Program for displaying the value of the sensor on the screen
This MyBlock is made in substitution for a regular wait-gyro-rate block. It is made with a filter so that big differences in sensor data don't show up as much. It also uses only absolute values of the data so negative or positive angle on the gyro sensor does not matter. The MyBlock ends, when the rate is below a certain value, which is inputed by a parameter.
By default the Gyro sensor is connected on port 2 but if your robot is different, make sure to change the blocks to suit it.
