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need help with school demonstration speech — Parallax Forums

need help with school demonstration speech

science_geekscience_geek Posts: 247
edited 2009-01-08 04:02 in General Discussion
ok, i have this demonstration speech for school that i need help with, my original idea was an ion lifter but when you ask a question about something with regard to high voltage, i get either a "dont do it" or a "be careful" and not an answer, i could really use an idea that incorporates something with robotics or the propellor or something with electricity that is cool and "safe", any ideas will be very helpful

Comments

  • rjo_rjo_ Posts: 1,825
    edited 2009-01-08 02:52
    when is it due?
  • rjo_rjo_ Posts: 1,825
    edited 2009-01-08 02:58
    my immediate reaction is to combine your talk with your other project... the electric vehicle.

    I took one of those cheap battery operated vacuum cleaners apart ... to get the motor. I then hooked up one of Parallax's motor controllers and controlled the speed of it using a Propeller... the objects in the obex work fine and you can have the whole thing working in a day

    and if you do that... then you have a talk AND a drive system for your electric vehicle... if you go this route... order two motor controllers...
  • science_geekscience_geek Posts: 247
    edited 2009-01-08 03:04
    this monday, but i have no life and no bed time on the weekend, i would like to have a topic picked out asap, ordering parts is not possible, i have a ton of electronic components laying around and plenty of stuff i can take apart.
  • SRLMSRLM Posts: 5,045
    edited 2009-01-08 04:02
    How about a electromechanical device that follows your hand movement? I built something very similar for OBC's Halloween contest. Basically, the user waved their hands at a box and it moved some servos (in this case to swing/drop a spider). You could do something similar with a couple of distance measurement devices and a couple of servos. Add a few flashing lights and you're set. It only took me a couple of hours to code, and a couple more to debug (I built it in a weekend).

    Alternatively, you could take a page from some college students. Here at my university, there is an EE class and they have mini projects. A very popular project is to built a model parking garage. You use hot-wheels for the cars, along with an elevator, and the uC keeps track of which spots are filled and where the elevator is.
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