 | | Re: GBC- Magnetic Ball Separator
|
|
(...) Thanks to those of you who filled in the set information. I actually got the balls from Bricklink, and the only thing I knew about them was they were from the Harry Potter sets. Peeron has been loading slow for me as well, and with that darn (...) (19 years ago, 21-Jan-07, to lugnet.robotics, FTX)
|
| |
| | Re: GBC- Magnetic Ball Separator
|
|
(...) I thought of this immediately, specificly adapting the light sensor / train magent trick to try to get the dragon's egg to register. Alas, I've not gotten it to work (*yet*...), as the ball is not actually magnetic, but just has a piece of (...) (19 years ago, 21-Jan-07, to lugnet.robotics)
|
| |
| | Re: Any experience with measuring rotations?
|
|
(...) Well put quite simply... The probability of some event A occurring given that event B has occurred is equal to the probability of event B occurring given that event A has occurred, multiplied by the probability of event A occurring and divided (...) (19 years ago, 21-Jan-07, to lugnet.robotics.nxt, FTX)
|
| |
| | Re: Like A Rock Crawler Hauler
|
|
"Steve Hassenplug" <steve@teamhassenplug.org> wrote in message news:6.2.3.4.0.20070...lug.org... (...) way, as my browser displays a 404 File Not Found error. It's title is Unload Truck 2. Other than that I liked the other videos and the pics of (...) (19 years ago, 21-Jan-07, to lugnet.robotics.nxt, lugnet.robotics, lugnet.org.us.laflrc)
|
| |
| | Re: Any experience with measuring rotations?
|
|
(...) What I need to do compute the average position of a number of items across the length of the teeter-totter (!). If, on average, they are in the middle, then there is no rotation and I should get zero. If there are more on the left than the (...) (19 years ago, 21-Jan-07, to lugnet.robotics.nxt)
|
| |
| | Re: Any experience with measuring rotations?
|
|
(...) Thanks for the technical details, Claude. It's going to take me some time to get through this! Rafe (19 years ago, 21-Jan-07, to lugnet.robotics.nxt)
|
| |
| | Re: Any experience with measuring rotations?
|
|
(...) Hi Tommy, This is a good idea; I'll try the ultrasonic sensor to see what it can do. Thanks! (19 years ago, 21-Jan-07, to lugnet.robotics.nxt)
|
| |
| | Re: Any experience with measuring rotations?
|
|
(...) I made a sequence of stacked 1x2 plates, running from black to red, through green dark grey, light grey, tan, white, yellow, and orange on the way there. My nxt gave me reflected light values running from about 12 to about 52. The nine steps (...) (19 years ago, 20-Jan-07, to lugnet.robotics.nxt)
|
| |
| | Re: GBC- Magnetic Ball Separator
|
|
(...) You may be able to kick the motor entirely. Have you tried embedding magnets in the floor and walls, close enough to attract, but not so much as to grab the ball? You could increase the slope to help with this also. :-) If the ball is magnetic (...) (19 years ago, 20-Jan-07, to lugnet.robotics)
|
| |
| | Re: Like A Rock Crawler Hauler
|
|
(...) Well, all my LEGO is tmeporarily put away for a three-year-old's birthday party, but this morning I finally got a Rock Crawler working... and it immediately stalled out in a pile of NXT kit spare parts :-( Sigh. At least it easily drives over (...) (19 years ago, 20-Jan-07, to lugnet.robotics.nxt, lugnet.robotics, lugnet.org.us.laflrc)
|
| |
| | Re: Any experience with measuring rotations?
|
|
(...) Well... there's two things here, and Steve solution actually addresses them both. Do you actually need a continual series of states, and the "weight" of the thing on the end of the beam, or just know if something *is* on the end of the beam? (...) (19 years ago, 20-Jan-07, to lugnet.robotics.nxt)
|
| |
| | Re: Any experience with measuring rotations?
|
|
(...) In the document (URL) find a paper-disk with grey gradient. The document was part of my presentation at the 2005 Annual Robolab Conference in Austin/TX. There was a second part (URL) don't remember, if those documents ever have been available (...) (19 years ago, 20-Jan-07, to lugnet.robotics.nxt)
|
| |
| | Re: Any experience with measuring rotations?
|
|
(...) I am not really an NXT guru, but seems the best way would be to simply measure the distance and calculate the angle. Tommy Armstrong (19 years ago, 20-Jan-07, to lugnet.robotics.nxt)
|
| |
| | Re: Any experience with measuring rotations?
|
|
(...) I am not rally an NXT guru, but seems the best way would be to simply measure the distance and calculate the angle. Tommy Armstrong (19 years ago, 20-Jan-07, to lugnet.robotics.nxt)
|
| |
| | Re: Any experience with measuring rotations?
|
|
(...) Don't mess with colors. Just use a gradient. You'll have a mostly linear set of values. With my black & white studs, there are also several shades of gray in between (like a little black & mostly white...) (...) no. :) Steve (19 years ago, 20-Jan-07, to lugnet.robotics.nxt)
|
| |
| | Re: Any experience with measuring rotations?
|
|
(...) "It's foolproof!" (...) This sounds like a good idea. I'm thinking I'm going to have to work out a sequence of more than just two shades, but that's what weekends are for, right? So, if I could make of sequence of colors that have increasing (...) (19 years ago, 20-Jan-07, to lugnet.robotics.nxt)
|
| |
| | Re: GBC- Magnetic Ball Separator
|
|
(...) You mean... [LEGOSet 4767-1] :) (19 years ago, 20-Jan-07, to lugnet.robotics, FTX)
|
| |
| | Re: Like A Rock Crawler Hauler
|
|
Hi Steve Hassenplug, Your design is Great!!! Can you put more pics about your structure! Thanks. Juan Antonio Breña Moral (URL) (19 years ago, 20-Jan-07, to lugnet.robotics)
|
| |
| | Re: GBC- Magnetic Ball Separator
|
|
(...) Whoa, my apologies for leaving out a smiley in the first posting. I was as lazy as you at the fore, thinking "why not mention which set in the initial post?", so I had to look it up myself. A shame that set seems to have been released for such (...) (19 years ago, 20-Jan-07, to lugnet.robotics)
|
| |
| | another comparison
|
|
We have compared the sampling and computing speed of NXT and RCX. NXT uses standard firmware 1.03 and is programmed with the LabVIEW toolkit. RCX is programmed with ULTIMATE ROBOLAB. Both bricks do the same thing: computing the DFT on a small (...) (19 years ago, 20-Jan-07, to lugnet.robotics)
|
