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chadwick-morse

Robotics - PowerPoint PPT Presentation

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Robotics
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  1. Robotics Switch block variant. Record/Play. Timer. Present building project proposals Homework: Postings. Plan projects.

  2. Switch block • IF/ELSE • Case statement • Number • Text • Can set the default condition

  3. Note: tabs.Current one is third Switch block Value of TypeNumber * Button marks default Tabbed, Not flat view

  4. Applications • Decide among 3 or more conditions rather than using nested logical tests • ?

  5. Timer • 3 timers are available • Must be reset. • Output can be • Logical result of comparison • The unit for the trigger is seconds! • Elapsed time since reset • The unit for reading is milliseconds

  6. Convert to text & combine to say Time is Read out the time Reset timer 2 Display & then wait

  7. Original blocks vs minis • Timer example: one motor move and one display

  8. Record/Play • Can record motion of the motors • Stores information on the NXT for playback

  9. Note • This is teach/playback: useful when action is NOT governed by sensors • Not easy to move robot motors ‘by hand’ • Motors difficult to synchronize so playback is jiggly.. • May be more useful for jointed motion? • See on-line discussion

  10. Building projects • Presentations

  11. Homework • [continue to] plan building projects • Postings • News articles • Comments on library presentations • Comments on building projects