 | | 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. (26 years ago, 27-Oct-99, to lugnet.robotics)
|
| |
| | Re: Sonar Sensor
|
|
(...) Yep, I've checked out about every page I've seen on this. I just haven't had the time to do it yet. :| As soon as our competition is over and classes settle down (maybe in 3 years :()) I will get a chance to experiment with it. When will you (...) (26 years ago, 27-Oct-99, to lugnet.robotics.handyboard)
|
| |
| | Re: Sonar Sensor
|
|
Danny, The Polaroid 6500 is very common, and if you have the expansion board on your HB you have a built in connection. There are drivers on the MIT HandyBoard site. The units are available from Acroname and they also have a good fact sheet. (2 (...) (26 years ago, 27-Oct-99, to lugnet.robotics.handyboard)
|
| |
| | Re: !!! Laser attachments for Mindstorms !!!
|
|
(...) Hmm, I don't think that's quite true. You can equip the robots with rotation sensors, and have them programmed such that they will send the values of their respective rotation sensors every so often. They can either send them to one another (...) (26 years ago, 27-Oct-99, to lugnet.robotics)
|
| |
| | Re: IntelliMouse Ripe for Hacking
|
|
Through the PS/2 adapter it doesn't require any special driver. The native USB plug requires a driver in Windows 98. Cheers, Jim Andy Gombos <lego-robotics@crynwr.com> wrote in message news:3816307E.540F5E...nfi.net... (...) to the (...) it cannot (...) (26 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 (...) (26 years ago, 27-Oct-99, to lugnet.robotics)
|
| |
| | stalled motor detection
|
|
Hi all, I'm working on a dead reckoning 'bot. I'm not really interested in what the wheels are doing unless they're stalled. Anyone know any good tricks for monitoring the motor current, or should I go with shaft encoders anyway? Thanks! Paul (26 years ago, 27-Oct-99, to lugnet.robotics.handyboard)
|
| |
| | 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? (26 years ago, 27-Oct-99, to lugnet.robotics)
|
| |
| | Re: controlling RCX from PC?!
|
|
(...) thanks matthew and arjen! that's exactly what i am going to do. what i did not realize at first is that 2400 baud actually *is* way too slow, as 2400 bits/s is only 240 bytes per second. a message has a length of around 10 bytes (depending on (...) (26 years ago, 27-Oct-99, to lugnet.robotics)
|
| |
| | Re: Group to discuss Teaching Lego Robotics?? lugnet.robotics.teaching ???
|
|
(...) I think major areas of education will [have to] end up going through the same push->pull revolution that traditional media have begun to go through in recent years. Pushing television shows, commercials, movies -- and especially news -- in (...) (26 years ago, 27-Oct-99, to lugnet.robotics.rcx.nqc, lugnet.admin.general)
|
| |
| | Re: Group to discuss Teaching Lego Robotics?? lugnet.robotics.teaching ???
|
|
(...) I'll see to it. --Todd (26 years ago, 27-Oct-99, to lugnet.robotics.rcx.nqc, lugnet.admin.general)
|
| |
| | Re: Chaining multiple RCX's output to input
|
|
(...) Pop a 10K ohm resistor in series with the motor. On my quick test with a variable resistor I got a value of 513 with the resistor at 9.7k. With a 10k resistor, the RCX raw value is now flickering between 510 and 511. P.S. same with the older (...) (26 years ago, 27-Oct-99, to lugnet.robotics)
|
| |
| | RE: Double echo
|
|
(...) Yup. Dave tells me he is working on integrating the speedier loader into NQC or even making standalone loaders by themselves... Sergey, which features do you REALLY want/need for the next release. I'm doing the following... 1. ECHO_ON/ECHO_OFF (...) (26 years ago, 27-Oct-99, to lugnet.robotics.rcx.pbforth)
|
| |
| | Re: !!! Laser attachments for Mindstorms !!!
|
|
I think that a good way to have a lasertag competition is to have an arena with many walls to hide behind, and have the robots programmed with different tactics of defense and offense. It's not hard to make an IR light beacon on top of each robot, (...) (26 years ago, 27-Oct-99, to lugnet.robotics)
|
| |
| | RE: !!! Laser attachments for Mindstorms !!!
|
|
If you remove the lens from (I suspect) most pointers, you won't get a beam of light at all, even a conical one. Most laser diodes are essentially "point" sources, the light goes in any direction it can (think flat lightbulb). Moving the lens closer (...) (26 years ago, 27-Oct-99, to lugnet.robotics)
|
| |
| | Re: stalled motor detection
|
|
Shaft encoders are hard to beat. If the wheels are commanded to turn and aren't, that's a good indication that something is screwy. Plus, if you're doing dead reckoning, you need them anyway so they are already there! Gary Livick (...) (26 years ago, 27-Oct-99, to lugnet.robotics.handyboard)
|
| |
| | Re: stalled motor detection
|
|
If a motor stalls, it draws a lot of current (compared to normal operation). You can measure that quite easilyusing dedicated chip, or by measuring the voltage over a small resistor in series with the motor: if more current is draw, the voltage drop (...) (26 years ago, 27-Oct-99, to lugnet.robotics.handyboard)
|
| |
| | Re: Chaining multiple RCX's output to input
|
|
Stephen Unwin <lego-robotics@crynwr.com> wrote in message news:Marcel-1.53-102...n.co.uk... (...) That makes sense cause the RCX has a 10K pulling the input up to 5V. The 10K you put in series with the motor will put the voltage at half way (2.5V) (...) (26 years ago, 27-Oct-99, to lugnet.robotics)
|
| |
| | Re: Group to discuss Teaching Lego Robotics?? lugnet.robotics.teaching ???
|
|
(...) I think that might have been me. I was sitting in the front row right across from Mitchel. (...) Rich (26 years ago, 27-Oct-99, to lugnet.robotics.rcx.nqc, lugnet.admin.general)
|
| |
| | 1.0 to 1.5 upgrade
|
|
Below are some products offered by (URL) I do not understand is that the upgrade kit from 1.0 to 1.5 can already be ordered, but the complete 1.5 will be available in January 2000. Can somebody explain? Harrie de Leeuw The Netherlands 9747 LEGO (...) (26 years ago, 27-Oct-99, to lugnet.robotics)
|
