Obstacle Detection

1. The robot ran into the wall and stopped.
2. The wall activated the touch sensor so the robot stopped like the program told it to when the touch sensor detected something.
3. Yes, if it didn't stop when it detected objects it would just get stuck running into a solid object.
4. It will stop when it runs into something so it won't get stuck, but it won't so anything to actually avoid the obstacle. It has to hit it before it stops.
5. It stopped 10 cm from the wall.
6. The wall set the sonic sensor off and so the robot stopped like it was programmed to.
7. It stopped about 10 cm away.
8. The robot stopped before it actually hit the object but it cannot sense smaller objects such as the legs of a chair.
9. This sensor is better for objects that you want to detect but not hit but it only works for larger or wider objects. The touch sensor will detect any objects but it has to actually hit it to detect it.
10. i) The sonic sensor detect objects without hitting them. The touch sensor has to hit it to hit it to detect it.
ii) With the sonic sensor it will stop in front of the object while with the touch sensor it will stop in contact with the object.
11. It will not hit the object which is good for delicate objects, however it cannot detect smaller objects such as the leg of the chair.
12. i) because the touch sensor can only detect the object when it is in contact with it while the touch sensor can detect an object from a distance and you have to set how far away you want it to stop.
ii) It will stop farther or closer to the object.
13. i) So a robot could do things like detect walls in a room, detect trees in woods, and navigate a maze.
ii) robots that are trying to navigate on their own. Robots that are trying to go through a maze.
iii) if the robot had to detect where a glass object was.
14. i) It can detect the object from a distance, it can stop different distances from the object, and it can prevent damage to the object or the robot.
ii) No, it cannot detect smaller/thinner objects.
iii) if a car like robot had to detect a wall. This sensor would prevent the robot from running into the wall and crashing trying to sense it.
iv) If a car like robot had to detect a street post it would not be able to sense it and would run into it.
15. A light sensor could look for dark objects to avoid.
16. It shows 6 question marks.
17. yes, if its too small it can't detect it
18. hard objects are easier because they are more solid and easier to read.
19. it could detect the ruler
20. NO, it could not detect the pen at all
21. yes it does, it could detect the pen.