Subject:
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Helicopter was Re: Newbie has an idea
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Newsgroups:
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lugnet.robotics
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Date:
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Wed, 20 Nov 2002 19:34:21 GMT
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Viewed:
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1030 times
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> If everything goes fine I'll be getting a RIS 2.0 it will be
> my 1st LEGO MINDSTORMS set. I have an idea but may is not possible to
> do specially a newbie like me won't be able to do it but I whould like
> to know if is possible to do a remote control plane?
I have built not a plane but a helicopter that does fly (sort of) which is
remotely controlled. Here are some recent photos:
http://www.brickshelf.com/cgi-bin/gallery.cgi?i=258416
http://www.brickshelf.com/cgi-bin/gallery.cgi?i=258417
http://www.brickshelf.com/cgi-bin/gallery.cgi?i=258418
http://www.brickshelf.com/cgi-bin/gallery.cgi?i=258419
As you can see from the pictures, the helicopter does not fly free. It is
attached to a cantilevered arm that uses the RCX as the counter weight.
Without the rotor turning, the arm is balanced so that the helicopter does
have some weight. With the rotor turning, enough lift is produced to lift
the helicopter. By changing the pitch of the helicopter (a motor is located
near the base) the helicopter can be made to move forward and reverse.
A second RCX is used as the controller. In the version in the photos I used
rotation sensors in the controller that sent IR messages to the helicopter
to control the pitch motor and the rotor power. There is also a small
micro-motor on the helicopter that raises and lowers a hook which is
controlled by a button on the controller.
Since these photos were taken I have redesigned the controller to use light
sensors pointing to gray scale disks instead of rotation sensors. This has
allowed me to use levers instead of wheels on the controller. The
controller now has one lever that simulates the collective (rotor power) and
one lever for the cyclic (pitch).
> May be no if what about a car?
With a second RCX to build a controller, this would be doable. IR messages
could be assigned to different steering angles and power/direction settings
for the drive. Like my new helicopter controller, a light sensor could be
aimed at a gray scale on a disk to get the desired steering angle input.
Similarly, a gray scale on the car could verify that the current steering
angle matches the steering input. Of course, if the car uses differential
drive you don't need any of this and you can just use buttons on the
controller or even just the Lego remote.
Gus Jansson
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Message has 3 Replies:
 | | Re: Helicopter was Re: Newbie has an idea
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| Gustav Jansson wrote: > I have built not a plane but a helicopter that does fly (sort of) > which is remotely controlled. Here are some recent photos: > > (URL) > (URL) > (URL) > (URL) you have any close-up photo's of the stationary helicopter? My (...) (21 years ago, 23-Nov-02, to lugnet.robotics)
| | | Re: Helicopter was Re: Newbie has an idea
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| Thought I would let you guys know that a MindStormer by name of SeriousDamage claims to have built a helecopter that really can fly. He's uploaded it to the MindStorms site: (URL) he sent me some pictures I'm hosting for him at my site for two (...) (21 years ago, 23-Nov-02, to lugnet.robotics)
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Message is in Reply To:
| | Newbie has an idea
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| If everything goes fine I'll be getting a RIS 2.0 it will be my 1st LEGO MINDSTORMS set. I have an idea but may is not possible to do specially a newbie like me won't be able to do it but I whould like to know if is possible to do a remote control (...) (21 years ago, 20-Nov-02, to lugnet.robotics)
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