 | | Re: Ultrasonic Distance measurement
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In article <J76vK1.Gpn@lugnet.com>, Stef Mientki <s.mientki@mailbox.kun.nl> writes (...) That is a great site, that I had not found before. Dank u wei. Cheers, Tony (20 years ago, 15-Oct-06, to lugnet.robotics)
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| | Re: NXT with 'RCX' rotation sensor
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(...) Just now I noticed that the answer has been changed: 'beginning of August' is changed in 'later this fall'. There is still hope I guess. :) Eric. (20 years ago, 15-Oct-06, to lugnet.robotics)
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| | Re: Ultrasonic Distance measurement
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(...) hi Philipe, while I had too little webspace, and my kids are getting too old (so no more new Lego developments), I had to remove the site. But here it is again: (URL) fun, Stef (20 years ago, 15-Oct-06, to lugnet.robotics)
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| | Re: NXT Ultrasonic reporting wrong values
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(...) What I discover just now: If I press the light gray conector case behind the sensor case with my nail, it will report the correct values!! but when I release, it stop working again. It seems to be a bad contact inside the sensor. How can I fix (...) (20 years ago, 15-Oct-06, to lugnet.robotics, lugnet.robotics.nxt)
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| | Re: NXT-G using RCX items.
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(...) Hi John. Please also read my previous posts about this subject. (URL) (20 years ago, 15-Oct-06, to lugnet.robotics.nxt)
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| | Re: NXT Ultrasonic reporting wrong values
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(...) I don't think that's an issue. In the sensors I have the mesh is not straight. Steve (20 years ago, 15-Oct-06, to lugnet.robotics.nxt)
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| | Re: NXT Ultrasonic reporting wrong values
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(...) No, is not. I am in "desperate mode", so, by now I am using only the NXT brick and the US, and trying to figure out more information about this condition... I realize now that the black grid in front of the right "eye" of the sensor is turned (...) (20 years ago, 15-Oct-06, to lugnet.robotics.nxt)
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| | Re: NXT Ultrasonic reporting wrong values
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(...) Yes, "stationary" is the correct word... The problem that i bought this one in UK, but i live in Brazil. No one here have this set (Actualy, i don´t know anybody who plays with LEGO mindstorms also...) With BrickxCC watching this sensor I get (...) (20 years ago, 15-Oct-06, to lugnet.robotics, lugnet.robotics.nxt)
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| | Re: Managing Memory
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(...) I've tested some, but not a lot (speed of execution I've tested more). Yes, NXT-G is not memory-friendly, *but*... (URL) biggest first problem is putting a bunch of nice sound files on-board (and especially not deleting them later). The nest (...) (20 years ago, 15-Oct-06, to lugnet.robotics.nxt)
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| | Re: NXT Ultrasonic reporting wrong values
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(...) Is this sensor mounted on a robot? Make sure you don't have anything anywhere in front of the robot. Steve (20 years ago, 15-Oct-06, to lugnet.robotics.nxt)
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| | Re: NXT Ultrasonic reporting wrong values
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(...) I'm not sure what you mean by "completely stopped" - stationary? I suppose it's possible that you actually have a bad US sensor. If you can find someone with a working one, try swapping sensors with them and see if the problem is isolated to (...) (20 years ago, 15-Oct-06, to lugnet.robotics, lugnet.robotics.nxt)
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| | Re: NXT-G using RCX items.
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----- Original Message ----- From: "Roger Glassey" <glassey@ieor.berkeley.edu> To: <lugnet.robotics.nxt...ugnet.com> Sent: Sunday, October 15, 2006 12:53 AM Subject: Re: NXT-G using RCX items. (...) Thanks for the infomation Roger. I'm going to (...) (20 years ago, 15-Oct-06, to lugnet.robotics.nxt)
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| | NXT Ultrasonic reporting wrong values
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A just get my NXT, and everything works fine, but the ultrasonic sensor is not reporting correct values. No matter what distance or direction it is pointed, the readings changes quickly from 1 to 3 inches (3 to 7 cm) even if the sensor is completely (...) (20 years ago, 15-Oct-06, to lugnet.robotics, lugnet.robotics.nxt)
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| | Re: NXT-G using RCX items.
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(...) I have a conveter cable so I finally did some tests with NXT-G and here is what I find-- RCX motor runs in both directions, and responds to the speed settings. The touch sensor works. The light sensor measures ambient light. But the bad news (...) (20 years ago, 15-Oct-06, to lugnet.robotics.nxt)
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| | Re: Ultrasonic Distance measurement
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(...) the (...) and (...) I've used the following circuit with 40SQR (which, I presume, is the same thing). 5V ,----R------, | | 1M | | | | R 47k | |\ | ,-----, | | | \ | | *---...---÷-----*--*- \ | | | | | >----*--- |40SQR| *--------*+ / | | | | / (...) (20 years ago, 14-Oct-06, to lugnet.robotics)
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| | Managing Memory
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I've got 8 kids working on NXT who have been experiencing "not enough memory". So, I did a little experimenting. Every new program takes a minimum of 6K. Every Move Block takes 0.5K Imagine that! 500 bytes for a simple move block. I haven't measured (...) (20 years ago, 14-Oct-06, to lugnet.robotics.nxt)
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| | Re: Ultrasonic Distance measurement
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(...) Sorry for the thread hijacking, but... Stef, where are your wonderful Lego sensor hardware pages? I can no longer find them on the web! I'm missing them, and probably a lot of people too! Philo (20 years ago, 14-Oct-06, to lugnet.robotics)
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| | Re: Ultrasonic Distance measurement
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(...) What kind of receiver amplifier do you use, these received signals are very-very small. see for example this: (URL) (20 years ago, 14-Oct-06, to lugnet.robotics)
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| | RE: NXT Ultrasonic sensor / Retreiving 8 OBjects at Once
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(...) aww yes , my bad ... 60 ms it is . (20 years ago, 13-Oct-06, to lugnet.robotics)
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| | Re: NXT-G using RCX items.
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(...) Well, you need converter cables of some sort to even connect RCX sensors and motors to the NXT. Beyond that, I'm not sure; I've not tried yet, because I don't have the converter cables to try. I suspect you will need the special NXT-G (...) (20 years ago, 13-Oct-06, to lugnet.robotics.nxt)
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