 | | Re: nxt controller specification
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(...) Strangely enough, the AVR does NOT read motor encoders, the lines coming from the encoder directly enter the ARM processor... Philo (17 years ago, 14-Feb-08, to lugnet.robotics.nxt)
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| | Re: nxt controller specification
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(...) Yep. But note that Philo was talking about *torque*, not force. A torque of 50 N•cm means that it could supply a force of 50 N with a lever arm of 1 cm, or a force of 500 N (more than 100 lbs) for a lever arm of 1 mm... but that would imply an (...) (17 years ago, 13-Feb-08, to lugnet.robotics.nxt)
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| | RE: nxt controller specification
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Thank you for clarifying this, Brian. I was reading (URL) It stated that the NXT with "Stalled torque) up to 50 N.cm. 50N... it equates approximately 10lbs?! That is without any further gearing down, but just the NXT motors!? Wonder if anyone has (...) (17 years ago, 13-Feb-08, to lugnet.robotics.nxt)
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| | Re: nxt controller specification
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(...) Yes. The AVR is responsible for a number of things, including PWM and encoder reading on the motor ports (IMS), the reading of the front panel button state, power management, and A/D from the input lines for analog sensors. It is not (...) (17 years ago, 13-Feb-08, to lugnet.robotics.nxt)
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| | nxt controller specification
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Hi, I wonder if anyone may be familiar with the spec about the nxt brick: I found this on the ww.hobbyengineering.com . NXT Brick * 32-bit ARM7 microcontroller * 256 Kbytes FLASH, 64 Kbytes RAM * 8-bit AVR microcontroller * 4 Kbytes FLASH, 512 Byte (...) (17 years ago, 13-Feb-08, to lugnet.robotics.nxt)
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| | BricxCC Scripting
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BricxCC now has preliminary but fully functional support for compiling and executing PC-based scripts to control your programmable brick (NXT, RCX, Spybot, whatever). These scripts can be edited in BricxCC with syntax highlighting and (coming soon) (...) (17 years ago, 12-Feb-08, to lugnet.robotics, lugnet.robotics.nxt, lugnet.robotics.rcx)
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| | Researchers use Lego Mindstorms robot to improve ATM security
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(URL) the article: "When the researchers created their prototype, which is called Undercover and was built with a Lego Mindstorms robot, they attempted to come up with a system that would be easy to use but would limit vulnerability to common (...) (17 years ago, 8-Feb-08, to lugnet.robotics, lugnet.robotics.nxt, lugnet.mediawatch)
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| | NXT Battery not charging
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Has anyone had this issue before; I have a NXT with the rechargable battery pack and everything has been working fine. I've charged it twice with out issue, but then last night the NXT complained about a low battery but when I hooked it up to the (...) (17 years ago, 27-Jan-08, to lugnet.robotics.nxt)
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| | Re: NXT Power Programming > LDD files?
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(...) I don't know if the instructions are on-line (publishers don't always like that), but you might want to have them build something similar of their own, just to help in designing something. Remote controls tend to be pretty simple (although (...) (17 years ago, 27-Jan-08, to lugnet.robotics.nxt)
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| | NXT Power Programming > LDD files?
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Yesterday, I acquired and am sharing John's book "NXT Power Programming". I tried to read as much of it last night. Great book! Anyway, I'm at PSU conducting a Lego NXT class with 7 boys. Several of the kids are very interested in the Remote Control (...) (17 years ago, 26-Jan-08, to lugnet.robotics.nxt)
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| | Re: NXT apparently cannot detect two buttons pressed at once
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(...) Actually, I've found that the orange button cannot be used independently, at least not from an NXT-G program. A simple program in NXT-G demonstrates the buttons supercede each other as follows: Right button (lowest priority) Left button Off (...) (17 years ago, 21-Jan-08, to lugnet.robotics.nxt, FTX)
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| | Re: NXT apparently cannot detect two buttons pressed at once
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(...) Confirmed. The arrows and grey button share a common resistor ladder and only one can be detected. But the orange "on" button has an independant circuitry and can be used separately. See keypad schematics in the HDK. Philo (17 years ago, 21-Jan-08, to lugnet.robotics.nxt, FTX)
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| | NXT apparently cannot detect two buttons pressed at once
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Can someone confirm that the front panel buttons on the NXT are wired in such a way that it does not work to press two of them at once? Not too surprising, I suppose, just as early computer keyboards were pre-decoded to signal which single key was (...) (17 years ago, 21-Jan-08, to lugnet.robotics.nxt, FTX)
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| | pbLua News - Beta 13y is Released!
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I am pleased to announce the release of pbLua Beta 13y - which is a replacement firmware for the LEGO MINDSTORMS NXT that runs right on the brick. It parses source code files sent to it via the USB or Bluetooth ports and runs the code. (URL) Lua is (...) (17 years ago, 20-Jan-08, to lugnet.robotics.nxt)
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| | Re: LDraw NXT parts kit overhaul
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(...) Thanks, Philo! I really appreciate the hard work you (and others) have put into these parts. Your website makes it easy to add the NXT parts into MLCAD. (...) I'm glad to see that you've also addressed the "stone" colors issue on the website (...) (17 years ago, 18-Jan-08, to lugnet.cad, lugnet.robotics.nxt, FTX)
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| | Re: Self-brew flexible bricks and silent motor for Lego NXT
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(...) There's a simple solution to the problem you've been having with air bubbles. Once you've got the mold filled, you need to introduce vacuum, which will pull the bubbles right out of the material and dissipate them. Back when I was in the (...) (17 years ago, 13-Jan-08, to lugnet.robotics.nxt)
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| | Re: LDraw NXT parts kit overhaul
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(...) This is great! Thanks much Philo! Now, if only someone can convince Kevin to make LSYNTH work with the wider cables of NXT. (17 years ago, 18-Jan-08, to lugnet.cad, lugnet.robotics.nxt, FTX)
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| | LDraw NXT parts kit overhaul
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After several weeks of patient work, I am finally finished with a major redesign of all NXT parts. All these parts were submitted to (URL) LDraw Parts Tracker> but for your convenience I have updated the (URL) kit> available on my website. Using (...) (17 years ago, 18-Jan-08, to lugnet.announce, lugnet.cad, lugnet.robotics.nxt, FTX) !!
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| | Re: Self-brew flexible bricks and silent motor for Lego NXT
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Sibrecht, that's awesome! I've blogged an according entry to THE NXT STEP blog: (URL) moulding one's own custom parts - a dream ... Best, MP Zitat von Sibrecht Bouwstra <s.bouwstra@student.tue.nl>: (...) ---...--- This message was sent using IMP, (...) (17 years ago, 16-Jan-08, to lugnet.robotics.nxt)
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| | Re: Self-brew flexible bricks and silent motor for Lego NXT
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(...) Sounds interesting. I'll check out your web site when I can do that without using Flash. (17 years ago, 16-Jan-08, to lugnet.robotics.nxt)
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