roboparade workshop ii cj chung, ph.d. founder & director of robofest and roboparade brought to...

RoboParade Workshop IICJ Chung, Ph.D.

Founder & Director of Robofest and RoboParade

Brought to you by a grant from

• Veteran RoboParade team members and coaches

• Rookie teams that took Oct 9 workshop at Lawrence Tech

This workshop is for

2

• Tribot• Light sensor: 3• Sonar sensor: 4

• Left motor: A• Right motor: C

• Additional motor: B

Robot to be used

3

• Endless loop– If sonar sensor detects an object

• Stop!

– Otherwise• Follow a black line

Review – Parade Program

4

Review (2) – Parade Program

5

Power: 50

“Flat View” of the Parade Program

6

• for NXT-G 2.1 users: “broken file error” (1003) can be fixed by rewriting the code.

Please rewrite the program to review

7

How and Where to start the robot?

8

A C

How and Where to start the robot?

9

A C

How and Where to start the robot?

10

A C Lost…

Always safe to start on the line!

11

C A

More reliable line following? Use two light sensors!

12

Solution is available on www.robofest.net, tech resource/ workshop 1 / slide 23

How to make it go smoother? (without using additional light sensor)

13

Let’s test on the test course

14

• Registered spectators will be given a ballot (go to: www.lorenzoculturalcenter.com and click on schedule to register online)

• Teams will introduce Robotic floats• During the 2nd Official Parade:

– Floats violating the traffic law will be removed– People will select best float from only remaining

robots

RoboParade People’s Choice Award

15

• Reliable line following is important – check light values

• Do not hit the robot in front – check sonar sensor value

• Test, test, and test!!!

First thing for People’s Choice Award

16

• Check the sonar sesnor range– Inch– cm

• Cover the back of the robot with paper for the robot behind you

• Meet the robot team in front of you: ask them to cover the back

• May need to adjust your sonar sensor location based on the robot in front of you

Why not detecting the front object, sometimes?

17

• Watch Previous RoboParade Videos– http://www.robofest.net/roboParade.htm

• See Pictures– http://www.robofest.net/roboParade.htm

• Think something “Wow” in order to win the People’s Choice Award

Ideas for floats

18

• Decorations: You may use additional independent batteries for lighting

• You may put anything on your float• Musical Instruments

– Castanets– Triangles– Tambourines– Drums– …

• Movements on the float: use additional motors

Ideas for floats

19

How to operate additional motors while following the line?

20

• Move the mouse on the beam• Press shift, the you will see a spool • Drag and connect (click or double click)

How to connect a parallel sequence beam?

21

• Wireless interaction between the robot and team players is strongly encouraged

• Sound sensor: claps, knocks• Light sensor: flashlight• Sonar sensor: hand waves

Interaction with your robot

22

• Difficult to follow the line, if too long and too heavy

• In addition, it will make it difficult for the robot behind you to detect you

Comments on Trailers

23

• Make a train with many smaller trailers, if you want to build a long float

• You may use strings to connect trailers for flexibility

Trailer II

24

Trailer III – Heavy Object

25

• Robot speed requirements: 4cm/sec ~ 18cm/sec (not too slow, not too fast)

• You cannot join the official parade unless your robot pass the test on:– Friday, November 19, 5:00 pm – 8:00 pm– Saturday, November 20, 10 am – Noon (for this

slot, teams must make an appointment)

• If you pass the test, you will be given an official flag

Remember

26

• A team can enter only one robot float• If you have more than one float, then you

must enter another team

• All family members must be registered through Lorenzo Cultural Center to enter the event hall. Online registration available at www.lorenzoculturalcenter.com

Note to Coaches

27

Happy

28