 | | !!! Laser attachments for Mindstorms !!!
|
|
Hi all, I am selling laser modules for Mindstorms. The modules are two 2x6 lego bricks one on top of the other with a plate on the bottom. It has a wire with a lego power connector on the end attached to one end, and the laser sticks out about 1mm (...) (25 years ago, 8-Oct-99, to lugnet.robotics)
|
| |
| | Re: !!! Laser attachments for Mindstorms !!!
|
|
Forgive my ignorance with respect to robotics and the like but what would you do with a laser? Is it used for guiding the robot or can the RCX detect when the beam is broken? I don't assume it is used to zap dirty dishes from the dinner table. <g> (...) (25 years ago, 8-Oct-99, to lugnet.robotics)
|
| |
| | Re: !!! Laser attachments for Mindstorms !!!
|
|
Yeah. In can't think of anything that a laser could be used for. Unless you had reflective walls and could use it as a range finder. Sort of like an ultrasonic range finder, only with light. I wonder if the timing could be done fast enough. Andy (...) (25 years ago, 8-Oct-99, to lugnet.robotics)
|
| |
| | Re: !!! Laser attachments for Mindstorms !!!
|
|
Andy Gombos <lego-robotics@crynwr.com> wrote in message news:37FE04DD.CA5505...nfi.net... (...) Maybe you could use it to blind people or pets. (25 years ago, 8-Oct-99, to lugnet.robotics)
|
| |
| | Re: !!! Laser attachments for Mindstorms !!!
|
|
i assume that i will be able to make a small lego robot that hunts for annoying dogs in the neiborhood and vaproizes them. i demand no less. b ---...--- (...) (25 years ago, 8-Oct-99, to lugnet.robotics)
|
| |
| | Re: !!! Laser attachments for Mindstorms !!!
|
|
(...) My initial thought was "Why?", but of course the next couple of posts displayed the creative energy of this group and contained several good answers to my question. For range finding using the laser wouldn't monitoring the intensity of the (...) (25 years ago, 8-Oct-99, to lugnet.robotics)
|
| |
| | Re: !!! Laser attachments for Mindstorms !!!
|
|
(...) Wasn't this what the SUN Jini demo did? Joel Shafer joel@connect.net (25 years ago, 8-Oct-99, to lugnet.robotics)
|
| |
| | Re: !!! Laser attachments for Mindstorms !!!
|
|
(...) Pulsing the laser would be implemented with the "motor speed control". (...) How about just using it with mirror(s) and the light sensor as a tripwire? (25 years ago, 8-Oct-99, to lugnet.robotics)
|
| |
| | Re: !!! Laser attachments for Mindstorms !!!
|
|
(...) Rangefinding can be done without much of this hassle. I developed an application a few years ago to "showcase" a product for the optoelectric company for which I worked. The product was a "position sensitive diode", aka a photodiode with two (...) (25 years ago, 8-Oct-99, to lugnet.robotics)
|
| |
| | Re: !!! Laser attachments for Mindstorms !!!
|
|
(...) I don't think I was clear enough in my last post. The $35 price includes shipping, but only for orders inside the US. International orders need to pay shipping. Josh (25 years ago, 8-Oct-99, to lugnet.robotics)
|
| |
| | Re: !!! Laser attachments for Mindstorms !!!
|
|
Are you talking about *real* lasers that can cut things? Or just one of those LED pointers? --Tobias (...) (25 years ago, 17-Oct-99, to lugnet.robotics)
|
| |
| | Re: !!! Laser attachments for Mindstorms !!!
|
|
Tobias Möller <tobias.moller@telia.com> wrote in message news:FJr4ut.Ez8@lugnet.com... (...) considering that a cutting laser starts around $290,000, and requires much more room than 2 Lego bricks, I would venture to guess that it is a laser (...) (25 years ago, 17-Oct-99, to lugnet.robotics)
|
| |
| | Re: !!! Laser attachments for Mindstorms !!!
|
|
*Real* lasers don't even look impressive. It is pracitaclly impossible to get a laser in the visable wavelengths to cut stuff. Usually UV lasers are used for this purpose. But anyway... in Oz, proper laser pointers are about $60. You can get really (...) (25 years ago, 17-Oct-99, to lugnet.robotics)
|
| |
| | Re: !!! Laser attachments for Mindstorms !!!
|
|
(...) really (...) the (...) they (...) I bought 2 for $10 at Osco 2 years ago and they are still working on their 2nd set of batts. (25 years ago, 18-Oct-99, to lugnet.robotics)
|
| |
| | Re: !!! Laser attachments for Mindstorms !!!
|
|
I got this awesome idea: Have you heard of Laserdome? You run around in a dark room and shoot at othe rpeople with lasers. When you get hit, a computer registers it and blah blah. How about building two robots, equip them with a light sensor and a (...) (25 years ago, 27-Oct-99, to lugnet.robotics)
|
| |
| | Re: !!! Laser attachments for Mindstorms !!!
|
|
(...) of a (...) Well, some of the cheaper laser pointers do this automatic. The produce a big spot of light when held not too far away from a wall. --Tobias (25 years ago, 27-Oct-99, to lugnet.robotics)
|
| |
| | Re: !!! Laser attachments for Mindstorms !!!
|
|
(...) It would be. But it's really tough -- not only can they not see where the light sensor is, they totally have no idea where the other robot is. It's like they're blindfolded and deaf. (25 years ago, 27-Oct-99, to lugnet.robotics)
|
| |
| | Re: !!! Laser attachments for Mindstorms !!!
|
|
You can also take the "lens" out of the front of a good laser pointer and it does the same thing. KL (...) (25 years ago, 27-Oct-99, to lugnet.robotics)
|
| |
| | Re: !!! Laser attachments for Mindstorms !!!
|
|
(...) Why spend money on a laser, that should have a focused beam, when all you're going to do basically, is turn it into a flashlight? (25 years ago, 27-Oct-99, to lugnet.robotics)
|
| |
| | Re: !!! Laser attachments for Mindstorms !!!
|
|
(...) you're (...) A flashlight is too big and heavy. A laser pointer is smaller and you´ll get a more compact design. --Tobias (25 years ago, 1-Nov-99, to lugnet.robotics)
|
| |
| | Re: !!! Laser attachments for Mindstorms !!!
|
|
I've found that shooting a laser pointer at a bicycle reflector gives a good enough return (to a light sensor right next to the laser source) to be detected. You can use this for navigation, as the RCX can turn around and find strategically mounted (...) (25 years ago, 14-Nov-99, to lugnet.robotics)
|
| |
| | Re: !!! Laser attachments for Mindstorms !!!
|
|
How far away can the RCX be before the return cannnot be detected? Andy (...) (25 years ago, 14-Nov-99, to lugnet.robotics)
|
| |
| | 6.270 course at MIT
|
|
Hi. Does anyone know the contents of the kit that the project teams use for the 6.270 robots course taught at MIT? Also, supposeably, Tufts University has developed university level course matterials, but these matterials were not immediately (...) (25 years ago, 14-Nov-99, to lugnet.robotics)
|
| |
| | Re: 6.270 course at MIT
|
|
Barbara Nostrand writes: > For that matter, what is the current state of putting Linux up on > the RCX? I recall seeing about half a year ago that someone was > trying to put Linux on the RCX. It was a joke. With only 64Kbytes, I don't think even (...) (25 years ago, 14-Nov-99, to lugnet.robotics)
|
| |
| | Re: 6.270 course at MIT
|
|
(...) I don't believe it is a kit, in the sense that you can buy it- IIRC, it was custom built by a company in the Boston area. Ah- here is the link- (URL) to this new solution (which is powerful enough to run NetBSD) they used the handyboards, (...) (25 years ago, 14-Nov-99, to lugnet.robotics)
|
| |
| | Re: !!! Laser attachments for Mindstorms !!!
|
|
(...) I don't know. I am working indoors, and detection is not a problem across my living room, about 5 meters. Now that you ask, I'll probably try it outside and find the answer. That's an advantage of using a laser - the beam disperses very (...) (25 years ago, 15-Nov-99, to lugnet.robotics)
|
