This program is for Frog Bot - LEGO Mindstorms Robot that could jump. The program makes the robot move like a toy car with a wind up mechanism. It starts by waiting for three seconds, when you should turn the legs of the frog by hand backward. Then it makes a sound, and the robot starts jumping forward, as much as you have wound it up. The program uses motor rotation sensor to know how much it was wound up.
The teacher should first explain the mission to the students: the robot should start from the base, marked in advance, to reach the next line, where the Moon is marked, to go round the Moon and return to the base.
Then the teacher should remind students that they have to accomplish the mission in small steps. Discuss with them what these steps might be.Students’ first task will be to accomplish the mission in which they have a starting and a final point set by the teacher. They should do that by trial and error until they find the correct settings of the robot. It all comes to trying out various settings for power and duration.
The same applies to setting the turn. Students will have to test both the angle and the duration of the turn.
Students should be careful about the sequence of the actions and, most importantly, should find a working solution on their own.
The teacher could make the task more complex: When the robot reaches the dark side of the Moon, it stops, makes a sound resembling the sound from a camera flash and then returns home.
The robot is horizontal. "I took the risk and it turned out great – I put a camera in the self-timer mode on top of the robot. At the start of the program I set a two-second delay, so that we could start the robot and install the camera on top". (Alex)
The teacher should tell students how robots turn in advance. He comments on programming the turn. The most obvious way is to use the tank block. The teacher should also focus on the steering block. You can also use the pictures in the m2 section.
For this lesson you will need a field, with some sort of marking for the Moon. This could be a pile of tires or a ball fixed to the floor somehow. You will also need to mark the pozition of the Earth where the robot will take off from. It could be a line of duct tape or a spacing between two floor tiles
This is a module that is made to look like a polar bear head, but really it could be used for many animals. It uses a medium motor to bite and an ultrasonic sensor for eyes. We have labeled it a polar bear head, because it is used in Polar Bear - LEGO Mindstorms EV3 Robot that looks like a polar bear.
A human being walks with an average speed of about 5 km/h (3 miles/h). In this video tutorial we will develop a block for LEGO MINDSTORMS EV3, that measures the speed of the robot in distance/time units where time will be configurable and could be 1 second or 0.5 seconds or any other number of seconds you pass as a param to the block. Measuring the speed of the robot is very powerful if you start building an Artificial Inteligence for your robot and is quite fun :)
This is the first Active Pinless Attachment for the Box competition robot. The attachment is placed on the top of the robot and is controlled by one of the motors.
As with the two sensors we have covered so far, the color sensor can be used as a condition for the wait block, the switch block or the loop block. The color sensor, as well as the ultrasonic sensor, has several modes, but today we will be looking at the color mode.
In order to find out why the color sensor reads the colors wrong sometimes, we should first understand how it works:
