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1chung Robofest 2005 RCX code Workshop Jan 29, 2005 CJ Chung.

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Presentation on theme: "1chung Robofest 2005 RCX code Workshop Jan 29, 2005 CJ Chung."— Presentation transcript:

1 1chung Robofest 2005 RCX code Workshop Jan 29, 2005 CJ Chung

2 2chung Agenda Comparison of RCX code and RoboLab programming languages (Chung, 15 min) RIS RCX code programming tutorial (Shvartsman, 70 min) Break – 10 min RIS RCX code programming tutorial 2 (Shvartsman, 70 min) RCX code tips (Chung, 15 min)

3 3chung Assistants Warren Beard Steven Kryskalla

4 4chung Why Icon based Visual Programming Languages?

5 5chung Right Lane Ends

6 6chung

7 7 Go forward for 2 sec. and stop program test { #include main { ext InterfaceType "kFreestyle" rcx_ClearTimers bbs_GlobalReset([A B C]) try { on [ A C ] } retry on fail wait 200 try { off [ A C ] } retry on fail }

8 8chung Go forward for 2 sec. and stop

9 9chung RCX code vs RoboLab Comparison Table

10 10chung

11 11chung Robofest Statistics: Programming Language Used by Teams in Robofest 2004 Data from 85 teams

12 12chung RoboLab vs. RCX code Follow a line and stop when the bumper is hit.

13 13chung RCX code hands-on workshop by Andrey Shvartsman (See another slide: intro2RCX.ppt)

14 14chung Robotic Invention System RCX code 2.0 Block Types Use them

15 15chung Avoid using them. They are for a specific robot. They wont work on your robot. Avoid using Sensors unless you have independent tasks

16 16chung Power Commands On On For Off Coast Brake Set Power: Min 1, Max 8 Set Direction Reverse Direction: Not recommended to use. Use Set Direction instead.

17 17chung Can you simplify this program?

18 18chung Wait Commands Wait For Wait Until

19 19chung Remember! Cover your robot and IR tower when you download programs Save your programs File Names should be meaningful Use logbook and comment

20 20chung Repeat Repeat For Repeat Forever Repeat While Repeat Until: sensor watcher

21 21chung Difference between Repeat Until and Repeat While Repeat Until command constantly monitors the sensor or variable and interrupts the repeated set of commands as soon as the condition is true. Repeat While: repeat a stack of commands as long as a condition is true; command only tests the sensor or variable at the end of each repeat.

22 22chung Structured Programming in RCX code Use My Blocks No parameters Macros, not subroutines

23 23chung My Blocks

24 24chung Opening a saved program Never use File | Open! There is a bug involving MyCommands Use Main Menu | Program | Vault

25 25chung Line following - Zigzag methods

26 26chung

27 27chung Zigzag without Sensor Watchers

28 28chung What will happen if the robot starts here… here

29 29chung Line following with 2 light sensors

30 30chung Line following with 2 light sensors II

31 31chung Line following with 2 light sensors III

32 32chung End Program Without End Program, you need to press Green button to stop the program

33 33chung Comments Comment Block Log book

34 34chung Useful Techniques End Program LCD View Display Value Timers Variables Sensors IR Messages Beeps and Tones to debug by hearing

35 35chung or Move forward until the robot reaches a black line (area) or hit a wall (detected by a touch sensor) Question:

36 36chung Solution using sensor watchers

37 37chung or Move forward until the robot reaches a black line (area) or hit a wall (detected by a touch sensor) Solution without using Sensor watchers

38 38chung or Move forward until the robot reaches a black line (area) or hit a wall (detected by a touch sensor) ? Solution without using Sensor watchers with using a variable

39 39chung RIS 2.0 XP Patch will stop the Robotics Invention System 2.0 launcher window from appearing when Windows XP is started. Now available for download at

40 40chung Epilog Read Robofest 2005 Rules Control vs. Speed Exhibition FAQ LTU is planning Robofest Playing Field Sale: Please contact


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