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Leroy Good

NXT Hand Generator Car - 5 views

  • Hand Generator Car
  • Building Instructions
  • Make sure that the gray bushings on the outside of free-spinning axle are not pushed on too tightly, so that the axle can spin easily.
  • ...8 more annotations...
  • Use one of the longest wires to connect the two motors together
  • If you put gears on the crank, make sure you build it very strong (brace the gears on both sides), otherwise the gears will slip and grind, or you may break a peg or bend an axle.No matter what, crank smoothly and be gentle with your crank motor, you don't want to damage it!
  • Hold the crank motor firmly in one hand and crank smoothly with the other hand.  Important: Be smooth and gentle so that you don't stress the motor parts.  Notice that if you crank the other direction, the car will change direction too.  If you are left-handed, or if you want your car to go the other direction, you can switch the hand crank to the other side of the motor.   
  • Try using gears on the car (or possibly on the hand crank) to change the rotation speeds and see how this affects the speed of the car.  Here is an example of using gears to speed up the car, if you can figure out how to build it or make something similar.  
  • Using the Generator Car
  • Try some other designs for the car.  There are lots of possibilities. Does this generator trick give you any other ideas that you could use it for?  For example, if you had an NXT robot that used one motor powered by the NXT for something, you could power and control the speed and direction of something else by using a second motor powered by a generator from the third motor.
  • If you carefully note now much the car wheels turn for each rotation of the crank, you will notice that one full turn of the crank results in somewhat less than one full turn of wheel rotation.  This is because the electric generator is not 100% efficient.  There are some losses due to friction and other things.  For example, if the car wheels turned 270 degrees for each 360 degrees of rotation of the hand crank, then the generator would be 270/360 = 0.75 = 75% efficient.  Can you estimate the efficiency of your generator?
    • Leroy Good
       
      DONT USE THIS CRANK LEVER it would be outside intervention
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    How to make a car JUST DONT USE THE CRANK PART AND MODIFY IT other then that This will help you desighn the car!!!
Alexander Sarkis

Generating Random Numbers outside the 0-1 Range - National Instruments - 4 views

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    how to do random turning in labview
Catherine Murphy

mazes r cool! - 3 views

omg you can make it always go toward a gap if youre able to make it see ahead that far

Savonna Small Brown

robot doing a maze - 6 views

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    This video shows you that when the light sensor comes across a line it stops reverses then goes the other way making what looks like 45 degree angle turns
Alexander Sarkis

NXT Modular Test Vehicle (MTV) - 3 views

  • The Drive Wheels module is designed to make it easy to change the gears used so that you can experiment with different gear combinations.  Different combinations will result in different gear ratios, which will have a big effect on the speed and power of your robot.   The faster gear combinations will make the robot go faster but have less power, which will make it harder to turn and carry loads, and note that faster robots are also typically less accurate. 
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    tells u what each gear does
Leroy Good

Voice Activated Irobot Roomba - YouTube - 3 views

shared by Leroy Good on 13 Oct 11 - No Cached
    • Leroy Good
       
      This roomba is voice actavated
  • Voice Activated Irobot Roomba
  • Verbal Machines LTD takes the IRobot Roomba one step ahead and makes it voice activated. In this demo you can see the Roomba preforming a SPOT command ("Clean This"), then preforming the DOCK command ("Go Home") and then turning off (" Bye Bye"). All of this is done using only voice commands. The voice recognition circuitry is onboard the Roomba so no PC or any other equipment is needed. Look for our other videos
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