 | | Re: Robot Magazine latest issue contains article about NXT Mindstorms Robotics
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(...) And now for the comments... The article is a good overview of the Mindstorms NXT product and does a fair job explaining the differences between the old RCX and the new product. It reads a little like a press release in that it covers the (...) (20 years ago, 12-Apr-06, to lugnet.mediawatch, lugnet.robotics)
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| | lnpd exexutable
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I have a friend who's not yet able to post, so he wanted me to post a question for him. Does anyone have an lnpd executable compiled for Windows (cygwin or not)? Thanks Steve (20 years ago, 11-Apr-06, to lugnet.robotics)
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| | Re: Request for info on the Control Lab Interface.
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(...) Thanks for your information! I was also sent via email a very helpful page: (URL) His (URL) Research Page> has source code, which was also helpful. In fact, his ActiveX control might be useful for NQC. I had trouble getting it to connect to my (...) (20 years ago, 12-Apr-06, to lugnet.robotics, lugnet.technic, FTX)
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| | Re: Request for info on the Control Lab Interface.
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(...) Yes, programs are executed on the PC. (...) Nothing is stored on the device. (...) It resides on the PC. (...) AFAIK, you will need a newer version of ROBOLAB. The older versions (forget which) did not support ControlLab. If you're up to the (...) (20 years ago, 11-Apr-06, to lugnet.robotics, lugnet.technic, FTX)
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| | Re: Help with converting voltage on circuit board
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(...) Hi Danny, If we supply +12V to the top of the transistors, the drive circuit will most likely not be able to block those transistors completely (unless said drive circuit has an open collector structure with a pull up to the emitter of the (...) (20 years ago, 11-Apr-06, to lugnet.robotics, lugnet.technic)
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| | Re: Request for info on the Control Lab Interface.
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Just today I got one of these from an eBay auction, including the original cable in a sealed plastic bag. The ROBOLAB software wasn't included, however, so I imagine that I'll need a driver of some kind to use it. Does anyone have a driver? (This (...) (20 years ago, 11-Apr-06, to lugnet.robotics, lugnet.technic, FTX)
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| | TexLUG Austin robotic line-following contest 6/11/06
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Folks, The Austin chapter of the Texas Lego Users Group (TexLUG) is holding a robotic line following contest on June 11, 2006. In this line following contest, robots attempt to complete a specified race course by following a black line on a white (...) (20 years ago, 11-Apr-06, to lugnet.org.us.texlug, lugnet.loc.us.tx.aus, lugnet.loc.us.tx, lugnet.robotics)
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| | Re: Help with converting voltage on circuit board
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(...) Thanks Dustin, those will help. I am inclined to agree with Philippe Hurbaine on the regulator. It is also obvious that it can take AC from the full wave rectifier near the power port. In answer to Davids question about the 4v connector (using (...) (20 years ago, 8-Apr-06, to lugnet.robotics, lugnet.technic)
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| | Re: Help with converting voltage on circuit board
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(...) The BDX34 transistor + toroidal inductor above + LM339 comparator probably compose a switching regulator efficiently converting 13V input power to 4.5V for the outputs. Philo (20 years ago, 8-Apr-06, to lugnet.robotics, lugnet.technic)
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| | Re: Help with converting voltage on circuit board
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I've taken some more detailed pictures of the circuit and the reverse side. (URL) through the manual, connections 6 and 7 are for sensors and connections 0-5 are for output (4V as labled on the cover), but you only can turn the circuit on or off. (...) (20 years ago, 8-Apr-06, to lugnet.robotics, lugnet.technic)
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| | Re: Help with converting voltage on circuit board
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(...) Hi Dustin, I am an EE. Before I give you some advice, I need a bit more information about 9750 (I have never seen one in person): - I see a power jack: I assume this powers the electronic circuit, not the loads, right? What voltage is applied (...) (20 years ago, 8-Apr-06, to lugnet.robotics, lugnet.technic)
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| | Re: Help with converting voltage on circuit board
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(...) Wow - I remember those, we used them at school. Now why is it that Peeron do not have an entry for it under 9750? Those are also some big old capacitors, I would be inclined to check out their ESR (a rating of their health if you like) before (...) (20 years ago, 8-Apr-06, to lugnet.robotics, lugnet.technic)
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| | Re: Help with converting voltage on circuit board
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(...) I am not an EE either but I can see at least 2 things that look like voltage regulators. (20 years ago, 7-Apr-06, to lugnet.robotics, lugnet.technic)
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| | Help with converting voltage on circuit board
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I'd like to try to convert the output of the voltage on a 9750 from 4V to 12V (to control 12V trains :). I've taken a photo of the internal circuit board - my rudimentary EE knowledge leads me to be believe I need to swap out the transistors that (...) (20 years ago, 7-Apr-06, to lugnet.robotics, lugnet.technic)
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| | LEGO Engineer Software
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Does anyone have a copy of or know of a good link to download the LEGO Engineer software - all the links that point to NASA sites don't seem to be valid anymore. Dustin (20 years ago, 7-Apr-06, to lugnet.robotics)
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| | Re: Absolutely amazing quadruped robot (watch the video)
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How about a biped that mimics human walking, i.e. uses its own inertia to catch itself? (URL) I recommend (URL) the videos from this mirror site>. This one's simple enough it might be possible to build it in LEGO. (20 years ago, 6-Apr-06, to lugnet.robotics, FTX)
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| | Re: RCX 1.0 Button Cleaning ...??
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(...) contacts) on the RCX. I followed it and was ...successful. Tools required: A No. 1 Phillips screwdriver and a small-bladed pocket knife. The cleaning solution was a small bottle of Audio/Video Deck cleaner (isopropyl alcohol) purchased at (...) (20 years ago, 3-Apr-06, to lugnet.robotics)
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| | Re: RoboLab code generation
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(...) It generates LASM. Try starting your program with the "Begin LASM" command found in the advanced palette. Tom (20 years ago, 1-Apr-06, to lugnet.robotics)
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| | NXT Battery Charger
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Good news for anyone that already has the transformer for the AC powered RCX. Looks like NXT rechargable battery will use the same one! From the product page: "Use the 979833 Transformer to charge the battery " -Tim (20 years ago, 1-Apr-06, to lugnet.robotics)
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| | Mindstorms NXT pre-order at Lego Shop @ Home
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Wow, I just received the email from Lugnet permitting me to post here. :-) Today is obviously when NXT pre-orders start, as declared on the home page of Lego Shop at Home. I also received an email, very similar to the one I had a week ago as an MDP (...) (20 years ago, 1-Apr-06, to lugnet.robotics)
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