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(...) Hear hear on that. Castors are evil. If you rotate and get lined up then drive forward, the castors will twist just enough to pull you off line. ...that could be contributing to the drunken lurching effect... I might have to try 4 wheel skid (...) (19 years ago, 2-Mar-06, to lugnet.org.ca.rtltoronto)
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| | Re: Gear lash....
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(...) 'Cause in my (maybe no so) brilliant design I have a "probe" that is tied back to a touch sensor that needs to be inserted into the transfer opening. If the probe hits a wall/another bot, etc. then it will back off assuming it was a bad light (...) (19 years ago, 2-Mar-06, to lugnet.org.ca.rtltoronto)
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| | Re: Gear lash....
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(...) But if you are "close" to the TO...then your precision usually is higher anyways--less movement, less slop? Here's some made up numbers to illustrate what I don't understand... If I read at time 0 at 30 degrees, a "contact". By the time I come (...) (19 years ago, 2-Mar-06, to lugnet.org.ca.rtltoronto)
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| | Re: rtl21 - Can Stacking
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(...) rtl20 is difficult? what, do people want marble sorting? :) I love the idea of stacking mismatched objects, especically non-LEGO objects--I'm in! As an aside, once warmer weather shows up and I can go back into the wood shop, I have a plan... (...) (19 years ago, 2-Mar-06, to lugnet.org.ca.rtltoronto)
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| | Re: Gear lash....
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(...) Hey Steve, Thanks-- I guess I should have clarified--it's the inter brick communication via IR that's not working. The touches were placed the same way on the test brick, and the "master" brick portion is running fine. The master has all the (...) (19 years ago, 2-Mar-06, to lugnet.org.ca.rtltoronto)
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| | rtl21 - Can Stacking
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Hey folks, I had an idea for a new game, and I want to float it here--see if there's any interest. Previously, I had suggested a "can weighing" game. Whoever ends up with the heaviest can wins. This, in retrospect, isn't that interesting. My new (...) (19 years ago, 2-Mar-06, to lugnet.org.ca.rtltoronto)
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| | Re: Gear lash....
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In lugnet.org.ca.rtltoronto, Wayne Young wrote: <snip> (...) Yeah, castors are harsh. I tried a nice little 2 wheeled beast with castors, thinking that I'd save room in the 'bot, but the castors threw the 'bot off so much, especially right after a (...) (19 years ago, 2-Mar-06, to lugnet.org.ca.rtltoronto)
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| | Re: Gear lash....
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(...) ... (...) Calum, Try turning around the wire on one of the RCXs. When connecting RCXs together this way, the polarity WILL matter. That would explain why something that seemed exactly the same would work outside the robot, but not when it's (...) (19 years ago, 2-Mar-06, to lugnet.org.ca.rtltoronto)
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| | Re: Gear lash....
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(...) Are you thinking the robot could adjust its direction on the fly? In my limited experience, precision matters when the robot is close to the TO, especially if it can cover a lot of ground in the time it takes for the sensors to come back with (...) (19 years ago, 2-Mar-06, to lugnet.org.ca.rtltoronto)
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| | Re: Gear lash....
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(...) This is the main reason I went with two light sensors--knowing that there'll be moving 'bots and such, I wanted to 'home in' using the best and easiest possible way. using the two ight sensors as a differential, you can steer right towards any (...) (19 years ago, 2-Mar-06, to lugnet.org.ca.rtltoronto)
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| | Re: Gear lash....
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In lugnet.org.ca.rtltoronto, Calum Tsang wrote: <snip> (...) I tried to make my wiring as tidy as possible--I only have 2 short wires left (without ripping apart my train layout) As well, you've seen the 'bot work on video, it's been tested numerous (...) (19 years ago, 2-Mar-06, to lugnet.org.ca.rtltoronto)
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| | Re: Gear lash....
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(...) Can I ask a stupid question from a non-moving bot owner? Why do you need that much precision? The light readings are going to be pretty variable, and the robot targets and obstacles are all moving, so do you really need that much precision to (...) (19 years ago, 2-Mar-06, to lugnet.org.ca.rtltoronto)
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| | Re: Gear lash....
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(...) Ever have one of those times where it's like "it ran outside the chassis!" then you actually install the bastard and put everything together and it stops working? Last night was one of those times. Sacha had figured out how to make the two (...) (19 years ago, 2-Mar-06, to lugnet.org.ca.rtltoronto)
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| | Re: Gear lash....
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(...) I found with my trial adder/subtractor that the play in the gearing was just unreasonable--sure, when the 'bot travels a bit in one direction it's straight, but that initial few inches--not so much. no worries about hte AB--I didn't go with (...) (19 years ago, 2-Mar-06, to lugnet.org.ca.rtltoronto)
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| | Gear lash....
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Well, it looks like in the 11th hour I'm going to have to abandon my differential drive for Project Y....there is WAY too much play in the differential gear train, which makes tracking the light with the whole bot virtually impossible... As my S.O. (...) (19 years ago, 2-Mar-06, to lugnet.org.ca.rtltoronto)
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| | 6 T.O. no waiting...
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(URL) like teaser pics before the show... no movies or whatever--i want some stuff to be a surprise. haven't really completed the programming, and I really have no idea at this time if the two separate parts are going to work well together--last (...) (19 years ago, 2-Mar-06, to lugnet.org.ca.rtltoronto)
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| | Re: Project Y Coloured Blocks
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(...) Great - I will not bring any blocks then, assuming I can mooch as I can't get 10 of the same colour. -Rob A> (19 years ago, 27-Feb-06, to lugnet.org.ca.rtltoronto)
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| | 4 T.O. no waiting.
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12" rule. BAH if i had the time i MIGHT shave off the 2" and "compress it" "perfect" T.O.'s BAH - if calum made me better ones I would not need to deal with the structural flaws. 4 openings (1) (URL) waiting PRICELESS Chris 1. if your deposit is a (...) (19 years ago, 28-Feb-06, to lugnet.org.ca.rtltoronto)
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| | Re: Going underground for the week... (warning--image intensive)
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(...) (wipes tear from eye) WOW dave. your... too kind. sniff. Chris (19 years ago, 28-Feb-06, to lugnet.org.ca.rtltoronto)
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| | Re: Going underground for the week...
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(...) I think that's about right. We start at 1 or whatever. Each round, whoever can make it, they make it, if they can't, they sit out. Your "availability" is basically however many rounds you can run. Obviously if eight robots show up, we can't (...) (19 years ago, 27-Feb-06, to lugnet.org.ca.rtltoronto)
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