 | | Re: GBC at BrickFest 2006
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(...) I found a yellow LEGO rubber band on the TECHNIC table, so I took it home with me since most everyone was gone by that point. That's probably not a big deal, unlike an entire train regulator. :( (19 years ago, 6-Sep-06, to lugnet.robotics)
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| | Re: GBC at BrickFest 2006
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(...) Now that is a nice solution, and not one I'd thought of. Not having the silver brick, I could still use a (non-LEGO! Aaah!) solution of a small pice of reflective tabe or something. Cool. (...) I know that there's one power transformer that is (...) (19 years ago, 6-Sep-06, to lugnet.robotics)
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| | Re: GBC at BrickFest 2006
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(...) I had success with a ball detector using only one light sensor in my little interactive get-the-ball-in-the-hole module. If the ball went into the hole, it rolled past a light sensor (old RCX version; is there a new nxt one?). Across from the (...) (19 years ago, 6-Sep-06, to lugnet.robotics)
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| | Re: GBC at BrickFest 2006
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(...) Yeah, that's suspiciously absent from my video. I'm uploading another one now: (URL) Google version is really jerky I'm afraid.) This one starts with the train being loaded, but then follows the train to the next unloading module so you can (...) (19 years ago, 6-Sep-06, to lugnet.robotics)
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| | Re: NXT Ultrasonic sensor
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(...) PS - the thing I would want the radar to do is to guide a bucket for an excavator. The goal being to dig lego bricks from a pile with the bucket. So I think I can get away with it not being super-accurate or resolute. I'm really looking (...) (19 years ago, 6-Sep-06, to lugnet.robotics)
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| | Re: NXT Ultrasonic sensor
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(...) Well it sounds promising, I'm going to try it. I really appreciate your input. -Ben (19 years ago, 6-Sep-06, to lugnet.robotics)
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| | Re: NXT Ultrasonic sensor
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(...) Well, sort of. First, what the US sensor returns is the range of the nearest sound-reflecting surface: but it's not a pencil thin laser beam of sound, so the same object might be detected at slightly different angles, making the object apeear (...) (19 years ago, 6-Sep-06, to lugnet.robotics)
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| | Re: GBC at BrickFest 2006
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(...) Actually, my counter was mechanical, in that each ball temporarily opened a normally closed touch sensor, and the RCX was just counting touches. For an optical one, you can use a ball breaking a lightbeam (two light sensors pointed at each (...) (19 years ago, 6-Sep-06, to lugnet.robotics)
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| | NXT Ultrasonic sensor
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I haven't bought an NXT yet and I have a question about the ultrasonic sensor it comes with. Can I use it to take a bunch of readings and then use them assemble up a 3D picture of what is around the sensor, kind of like how a radar works? How long (...) (19 years ago, 6-Sep-06, to lugnet.robotics)
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| | Re: GBC at BrickFest 2006
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(...) That got me thinking...we had a few ball counters going: Rafe's impressive digital counter, Greg's analog one, and Brian's optical one in the "penalty box" with all of my modules (heh heh). My question is this: is there agreement on what the (...) (19 years ago, 5-Sep-06, to lugnet.robotics)
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