 | | Line Following by Humans versus Bots —Soh Chio Siong
|
| | | For some reason, bots are compelled to follow a single line. Whereas humans typically keep within two parallel lines when they drive. However, when they are inebriated, humans may try to emulate the bot, often with disastrous results. There exist (...) (25 years ago, 16-Nov-99, to lugnet.robotics)
|
| | | |
| | | | | Re: Line Following by Humans versus Bots —Luis Villa
|
| | | | | I wish I had time to post more on this right now, but suffice it to say there has been a lot of research on how humans and animals do this type of thing. Staying within a hallway without bumping into the walls is actual done by taking a mental (...) (25 years ago, 16-Nov-99, to lugnet.robotics)
|
| | | | | |
| | | | | | | Re: Line Following by Humans versus Bots —Soh Chio Siong
|
| | | | | | | (...) Fascinating, I tried the search but unfortunately nothing related turned up. Coincindentally, there's another thread on line following based on the conventional single black line. There is the suggestion that the line has to be somewhat (...) (25 years ago, 16-Nov-99, to lugnet.robotics)
|
| | | | | | | |
| | | | | | | Re: Line Following by Humans versus Bots —Stefano Franchi
|
| | | | | | (...) Although it's an "old" book now by scientific standards, Valentino Brateiberg's Vehicles (MIT press I believe, still in print) contains a clear and accessible discussion of this topic, plus reference to the standard literature. I suppose you (...) (25 years ago, 16-Nov-99, to lugnet.robotics)
|
| | | | | | |
| | | | | | | | Re: Line Following by Humans versus Bots —Ralph M. Deal
|
| | | | | | (...) The reference is Vehicles by Valentino Braitenberg, MIT PRess 1984. (Took awhile to find that!) Wish I had a copy. Ralph Deal@kzoo.edu (25 years ago, 16-Nov-99, to lugnet.robotics)
|
| | | | | | |
| | | | | | | | Re: Line Following by Humans versus Bots —Luis Villa
|
| | | | | | (...) Actually, it is pretty cheap on amazon (14 + shipping)- check it out here: (URL) Profanity is the one language that all programmers understand. -Anonymous ###...### (25 years ago, 16-Nov-99, to lugnet.robotics)
|
| | | | | | |
| | | | | | | | Re: Line Following by Humans versus Bots —Soh Chio Siong
|
| | | | | | (...) Thanks, I'll have to get myself a copy. Judging from the lively discussions in an accompanying thread on line followers, it seems that following a single black line is far from being a trivial matter. It seems to me more natural to be keeping (...) (25 years ago, 17-Nov-99, to lugnet.robotics)
|
| | | | | | |
| | | | | | | | Re: Line Following by Humans versus Bots —Paul Speed
|
| | | | | | | (...) You are right that with one stationary light sensor, line following is not a trivial matter. Change the constraint and it starts to become a little more trivial... we're just splitting the problem by focusing on both the mechanical and (...) (25 years ago, 17-Nov-99, to lugnet.robotics)
|
| | | | | | | |
| | | | | | | | | Re: Line Following by Humans versus Bots —Soh Chio Siong
|
| | | | | | | | | Paul Speed wrote: <snip> <snip> (...) Thanks for the thoughts. I'm not sure if it's been done before, but I'm now making a playing field where the bot will have to keep within two black lines using 2 RCX light sensors to see how it compares to (...) (25 years ago, 18-Nov-99, to lugnet.robotics)
|
| | | | | | | | | |
| | | | | | | | | Re: Line Following by Humans versus Bots —Vlad Dumitrescu
|
| | | | | | | | (...) I am really agreeing with you, but since yesterday I begun thinking a little in other pathways... The specifications for a general line following robot have to include also a specification for the kind of line/pathway the robot can follow. So (...) (25 years ago, 18-Nov-99, to lugnet.robotics)
|
| | | | | | | | |
| | | | | | | | Re: Line Following by Humans versus Bots —Graham Stalker-Wilde
|
| | | | | | (...) a single line in (...) sensors? (...) A single black line (of any width) on a white background *is* two white lines on black background. The real question is: what is the optimal width for the line? (given the number of sensors available) -g (25 years ago, 18-Nov-99, to lugnet.robotics)
|
| | | | | | |
| | | | | | | | Re: Line Following by Humans versus Bots —Paul Speed
|
| | | | | | | (...) Heh, good point. (...) Incidentally, in my robot I have solved my moving light sensor problem. Now I'm left to the tedium of properly linking all four corners of my synchro platform now that I can't just freely run things through the center. (...) (25 years ago, 18-Nov-99, to lugnet.robotics)
|
| | | | | | | |
| | | | | | | | Re: Line Following by Humans versus Bots —Soh Chio Siong
|
| | | | | | (...) Hey, that is very deep insight! Worthy of the Tao Te Ching. (...) The typical width given in the competitions is 1 inch (conveniently the width of electrical tape). Is this the minimum? I'm experimenting with a wider line. I believe the width (...) (25 years ago, 19-Nov-99, to lugnet.robotics)
|
| | | | | | |
| | | | | Re: Line Following by Humans versus Bots —Vlad Dumitrescu
|
| | | | | (...) I wouldn't say the human eye is just a 'visual sensor' of the Lego type... it's more like a very advanced camera... and the 'central processor' is also much better than any supercomputer at analyzing that kind of input... There are also two (...) (25 years ago, 16-Nov-99, to lugnet.robotics)
|
| | | | | |
| | | | | Re: Line Following by Humans versus Bots —Pete Hardie
|
| | | | (...) Yes, but I believe that in most cases the CPU for a human has a few more KB of RAM than the RCX. (...) Another difference is the range on visual sensors - eyes can detect lines meters away, and even distinguish 2 lines inthe same field. (25 years ago, 16-Nov-99, to lugnet.robotics)
|
| | | | |
| | | | | | Jumping 'bots? —Christian Jacobsen
|
| | | | Greetings All! I am still awaiting the arrival of MindStorms in Hungary, so I have had a lot of time to read the O'Reilly book, lurk on LUGNet and this list for a month or so, and just generally get a feeling for the whole LEGO robotics world. I (...) (25 years ago, 17-Nov-99, to lugnet.robotics)
|
| | | | |
| | | | | | Re: Jumping 'bots? —John VanZwieten
|
| | | | | Christian Jacobsen <lego-robotics@crynwr.com> wrote in message news:00b101bf30f1$54...a@xtian... (...) I've been thinking about the same thing ever since seeing pictures of battleing robots. It would be great to have a bot that could hop on top of (...) (25 years ago, 18-Nov-99, to lugnet.robotics)
|
| | | | | |
| | | | | | Re: Jumping 'bots? —Graham Stalker-Wilde
|
| | | | | (...) I remember a Scientific American article from a decade or so back on walking bots. (I’m now getting close the point where I’ll be reading the “25 Years Ago” articles for the second time, looking forward to that.) As I remember they discussed (...) (25 years ago, 18-Nov-99, to lugnet.robotics)
|
| | | | | |
| | | | | | Re: Jumping 'bots? —Marcus Fischer Mellbin
|
| | | | | (...) Dear Christian, I have been experimenting with legs that could make a robot jump like a frog (see my old "Jump Frog Jump"-posting). I had several problems. It was actually my first idea for a robot. One of the problems the idea represented was (...) (25 years ago, 18-Nov-99, to lugnet.robotics)
|
| | | | | |
| | | | | | Re: Jumping 'bots? —peter renshaw
|
| | | | (...) of an (...) Funny enough I've been thinking about this. There's a particular type of spider that also acheives this motion by pumping compressed fluid to it's legs, simultaneously and quickly. Power to weight ratio is going to be your enemy (...) (25 years ago, 18-Nov-99, to lugnet.robotics)
|
| | | | |
| | | | | | Re: Jumping 'bots? —David Paule
|
| | | | (...) It might be possible to gradually wind up a bungee cord and then abruptly release it. That would permit a gradual conversion of electrical to mechanical energy at a rate the the RCX permits, while still allowing high power for the short time (...) (25 years ago, 19-Nov-99, to lugnet.robotics)
|
| | | | |
| | | | | | Re: Jumping 'bots? —Christopher Lannan
|
| | | | (...) Yeah! The bungee idea would work! Combine that with the pogo idea- I'm thinking for balance just put the bot inside a tripod or pyramid- basically the pogo stick hangs from the top of the pyramid. Motors could angle it, then when the bungee (...) (25 years ago, 19-Nov-99, to lugnet.robotics)
|
| | | | |
