 | | Re: !!! Laser attachments for Mindstorms !!!
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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> (...) (26 years ago, 8-Oct-99, to lugnet.robotics)
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| | Re: !!! Laser attachments for Mindstorms !!!
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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 (...) (26 years ago, 8-Oct-99, to lugnet.robotics)
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| | RE: !!! Laser attachments for Mindstorms !!!
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I think a laser would be very useful for vaporizing pesky obstacles, I'd like mine to be a CO2 @ 50 Watts please....Blue bricks would be just fine :>)) Seriously, a laser might be an interesting source of light for a homing beacon. I don't know if I (...) (26 years ago, 8-Oct-99, to lugnet.robotics)
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| | Re: !!! Laser attachments for Mindstorms !!!
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Andy Gombos <lego-robotics@crynwr.com> wrote in message news:37FE04DD.CA5505...nfi.net... (...) Maybe you could use it to blind people or pets. (26 years ago, 8-Oct-99, to lugnet.robotics)
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| | Re: !!! Laser attachments for Mindstorms !!!
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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 ---...--- (...) (26 years ago, 8-Oct-99, to lugnet.robotics)
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| | Re: !!! Laser attachments for Mindstorms !!!
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(...) 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 (...) (26 years ago, 8-Oct-99, to lugnet.robotics)
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| | Re: !!! Laser attachments for Mindstorms !!!
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(...) Wasn't this what the SUN Jini demo did? Joel Shafer joel@connect.net (26 years ago, 8-Oct-99, to lugnet.robotics)
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| | Open NELUG Meeting Saturday 10/23 @ 7:00 PM.
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The New England Lego Users' Group (NELUG) will be hosting an open meeting on Saturday, October 23rd at 7:00 PM, during the upcoming MindFest event. The MindFest organizers at the MIT Media Lab have graciously offered us a large room for the (...) (26 years ago, 8-Oct-99, to lugnet.announce, lugnet.robotics)
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| | Re: !!! Laser attachments for Mindstorms !!!
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(...) 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? (26 years ago, 8-Oct-99, to lugnet.robotics)
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| | RE: !!! Laser attachments for Mindstorms !!!
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(...) difficult (...) of a (...) Snip You put a single field lens in front on the laser to provide a conical beam, but this is usually already done by the manufacturer because a laser diode is basically a point source and needs to be collimated to (...) (26 years ago, 8-Oct-99, to lugnet.robotics)
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| | !!! Laser attachments for Mindstorms !!!
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Lasers are very well, and make cool toys. My cat loves to chase the little red spot on the carpet! But if you're talking about scanning or diffusing the beam, aren't you defeating the purpose of using a laser. If you want a cone, use a super- bright (...) (26 years ago, 8-Oct-99, to lugnet.robotics)
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| | Re: !!! Laser attachments for Mindstorms !!!
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Maybe the robot could use the laser to draw spiro-graph designs on the wall, I'm not sure if the motors could position the beam that fast though. Joel Shafer joel@connect.net (26 years ago, 8-Oct-99, to lugnet.robotics)
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| | Re: !!! Laser attachments for Mindstorms !!!
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(...) 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 (...) (26 years ago, 8-Oct-99, to lugnet.robotics)
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| | Re: !!! Laser attachments for Mindstorms !!!
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(...) 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 (26 years ago, 8-Oct-99, to lugnet.robotics)
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| | GP2D12 and Handyboard
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Hi all! I recently got hold of a sharp GP2D12 ir range sensor (The analog version, not 8-bit serial) Upon connecting it to my handyboard (Vcc-5v, Gnd-Gnd, and Vo to analog port) I get between 249 and about 251 value from the analog port. Clearly no (...) (26 years ago, 8-Oct-99, to lugnet.robotics.handyboard)
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| | Motors
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Does anyone know where to get good motors that work good with the handyboard. I need geared DC motors because we dont want our project to be a racing car. If anyone has any answers or suggestions please email me back. Thanks. TIM ===== (26 years ago, 8-Oct-99, to lugnet.robotics.handyboard)
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| | Re: Motors
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Try Micro Mo, they have high quality motors and gearheads. They can be pricy if (...) (26 years ago, 9-Oct-99, to lugnet.robotics.handyboard)
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| | wireless camera
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I remember sometime ago a discussion on wireless cameras. I just saw this one that can be battery operated. and is 900mhz. from the picture you really can't tell the size of the camera but I thought I'd pass it along. (URL) (26 years ago, 8-Oct-99, to lugnet.robotics)
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| | Re: wireless camera
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(...) It says Camera Dimensions: 2" x 3.75" x 5.5" and that's probably not including the battery box or antenna. (26 years ago, 9-Oct-99, to lugnet.robotics)
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| | Re: !!! Laser attachments for Mindstorms !!!
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(...) I was actually working on something like this using one of those cheap little $8 laser pointers. The idea is to use a pair of mirrors that can be rotated to specific angular locations to build an X-Y Laser Plotter. One mirror rotates (...) (26 years ago, 9-Oct-99, to lugnet.robotics)
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| | Re: Motors
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no doubt Micro Mo motors are sweet, but if the project is on a hobby budget, also consider: All Electronics -An electronics surplus company with a decent selection of motors and lots of other neat gadgets for robot building. This will be among the (...) (26 years ago, 9-Oct-99, to lugnet.robotics.handyboard)
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| | RE: !!! Laser attachments for Mindstorms !!!
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(...) SNIP (...) SNIP Big rocks, too. :>) The problem is not so much the laser, as it is your scanning. Unless you are projecting against a phorescent screen, there is no "residual" trace, regardless of power. It is the speed at which the eye can't (...) (26 years ago, 9-Oct-99, to lugnet.robotics)
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| | Re: !!! Laser attachments for Mindstorms !!!
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One of the early things I did with my laser pen was rubberband one of the 5 stud long "helicopter rotor" plates to the side of it. I never got it balanced *perfectly*, but it was close. I then stuck the axle from the older 9 volt technic motor (...) (26 years ago, 9-Oct-99, to lugnet.robotics)
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| | RF transceiver
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Hi , I am a handyboard user and I am trying to build a tele-robot. I am using the transmitter and receiver from Glolab. I have fix up a pair of transceiver namely "A" and "B" (with TM1V and RM1V) as guided in "How Encoders and Decoders work" using (...) (26 years ago, 9-Oct-99, to lugnet.robotics.handyboard)
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| | Re: !!! Laser attachments for Mindstorms !!!
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Okay. The adress for that OpteK Technology is www.optekinc.com . They have other sensors too, for magnetic and infared needs. Intresting place to go for position sensors. The products have possibilities. Andy (26 years ago, 9-Oct-99, to lugnet.robotics)
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| | Re: LEGO robotics dis'd in CACM Forum.
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(...) I think the gratest strengths of LEGO robotics (and LEGO in general) is that it works with you, not against you. It's easy to make things fit 'cause you don't have to drill holes and insert skrews. LEGO helps you keep your mind on what you (...) (26 years ago, 7-Oct-99, to lugnet.robotics)
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| | Re: LEGO robotics dis'd in CACM Forum.
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(...) I agree with this. I think that LEGO is probably one of the best tools for trying out ideas too. It is fast build and easy to modify - nothing beats that. Jacob (26 years ago, 7-Oct-99, to lugnet.robotics)
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| | Re: !!! Laser attachments for Mindstorms !!!
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In lugnet.robotics, lego-robotics@crynwr.com (Chris Osborn) writes: <...snip> (...) This is the best use I've heard of yet for an AOL CD! (...) And if you use one of those nifty, high-powered, rock-vaporizing lasers, you won't even need to bring (...) (26 years ago, 9-Oct-99, to lugnet.robotics)
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| | Re: !!! Laser attachments for Mindstorms !!!
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(...) Yah, did this in college long ago, before laser pens were common. We used the "big" lasers. :-) We also glued a small mirror onto a piece of aluminum foil wrapped around the end of an open tube, and placed it outside in the quad. Then we (...) (26 years ago, 9-Oct-99, to lugnet.robotics)
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| | Re: Motors
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Tim, Check out www.acroname.com. They have motors there that are a little slow, but are geared DC and run with the HandyBoard 9.6 volts. Use larger wheels to get more speed, or...... If you want the motors to be faster, you can pull one of the L293D (...) (26 years ago, 9-Oct-99, to lugnet.robotics.handyboard)
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| | Re: !!! Laser attachments for Mindstorms !!!
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HI, Me and my friend did this thing with a laser pointer where we connected it in parallel with a audio device(using a cut headphone cord). We then built a light sensor with an amp and speakers. when the music plays it turns the beam of the laser on (...) (26 years ago, 9-Oct-99, to lugnet.robotics)
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| | IR reflective sensors and Polaroid 6500 w/Expansion Board
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With the QRB1114 IR reflective sensors does the sensor need voltage supplied or is that just for the transmitter? Because all I am using them for right now is to detect infrared light. Also does the expansion board take up the connectors on the HB (...) (26 years ago, 10-Oct-99, to lugnet.robotics.handyboard)
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| | someone looking for gearbox???
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someone was asking about a gearbox for a project ` while surfing tonight I came across this I hope it is what you need <A HREF="(URL)Gearbox with motor</A> (URL) (26 years ago, 10-Oct-99, to lugnet.robotics.handyboard)
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| | Re: Does anyone have the 8479 bar code truck?
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(...) I just noticed the flex cables in the picture of this set in the latest Shop at Home catalog. They look like bicycle brake cables. That could be really useful for transferring motor power to other parts of a model or robot. And probably more (...) (26 years ago, 10-Oct-99, to lugnet.reviews, lugnet.robotics)
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| | RE: Does anyone have the 8479 bar code truck?
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Snip > Are these cables available in any other sets? There is a cable in the 8444 Air Enforcer set. It is used for motion between the two joysticks and the swashplate on the rotor (another interesting part). It has two clevis ends, and a mid clevis (...) (26 years ago, 10-Oct-99, to lugnet.reviews, lugnet.robotics)
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| | Re: Does anyone have the 8479 bar code truck?
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SNIP (...) Shop at (...) And (...) SNIP I have been grappling with remote power delivery for a while. I ended up buying some chain links. Used with larger sized gear wheels, there seems to be little friction loss. I can highly recommend them. JB (26 years ago, 10-Oct-99, to lugnet.robotics)
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| | RE: LM35 Again
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Hi, Like an update to my prior email, I have tested the LM35 with an external power source, with the same bad result. Any help will be welcome. Thank You José Luis ----- Original Message ----- From: Jose Luis <hal9000@cvtci.com.ar> To: (...) (26 years ago, 11-Oct-99, to lugnet.robotics.handyboard)
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| | Re: Does anyone have the 8479 bar code truck?
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Hello All, My first experience with the flex cables was with The Technic Control Center II. You know, the T-Rex one? They were used to make the tail swing back and forth, pulling with one, and pushing with the other. More recently, I used four of (...) (26 years ago, 10-Oct-99, to lugnet.robotics)
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| | Flex Cables (was: Does anyone has the 8479 bar code truck?
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The flex cables are available here in Italy at the Lego Service (set of 5 cables and accessories, with different sizes). If someone is interested, I can get some of them. Just email me. Giulio giuliof@iol.it (26 years ago, 11-Oct-99, to lugnet.robotics)
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| | Re: Flex Cables (was: Does anyone has the 8479 bar code truck?
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(...) This pack should be available in all European countries. The pack number is #5118... maybe it's available in the US service catalogue too? Stuart (26 years ago, 11-Oct-99, to lugnet.robotics)
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