 | | Kalman Filter on the NXT
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The Kalman Filter may be perceived as a discouraging, almost occult calculation method. Many do apply the filter just by following some "cooking recipes", and they don't care much about the internals. However, if the filter is well studied and (...) (12 years ago, 28-Dec-12, to lugnet.robotics)
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| | Flying LEGO
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A LEGO Arducoptor: (URL) (12 years ago, 27-Dec-12, to lugnet.mediawatch, lugnet.robotics, lugnet.general)
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| | Danish LEGO Group supports World Robot Olympiad
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Danish LEGO Group supports World Robot Olympiad From November 9-11, 2012, World Robot Olympaid 2012 is held in Kuala Lumpur, Malaysia. For several years in a row, Danish LEGO Education has been a main sponsor of World Robot Olympaid (WRO). This (...) (12 years ago, 9-Nov-12, to lugnet.mediawatch, lugnet.general, lugnet.robotics, FTX)
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| | Re: "Casemate explorer" project resumed
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(URL) (12 years ago, 27-Oct-12, to lugnet.robotics, FTX)
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| | "Casemate explorer" project resumed
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Last academic year we started an ambitious project with the LEGO compatible (URL) Tetrix> robotic kit: (URL) Casemate> Explorer As the City of Luxembourg is undermined by casemates, which are vaulted chambers of the old fortress, our robot should be (...) (12 years ago, 27-Oct-12, to lugnet.robotics, FTX)
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| | Re: Raspberry Pi and Berry Box – The Transparent Case
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(...) I just received my Raspberry Pi (lastest revision which is Rev 2 with 512 MB of RAM) and will be building a Lego case for it. There are several Lego case designs out there for public consumption: Lego case which can be ordered (instructions (...) (12 years ago, 18-Oct-12, to lugnet.robotics, FTX)
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| | Re: Multiple Motors/Synchronizing Movement
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(...) I recently had a MOC where I wanted to do something similar (only 2 axes though). After spending a little while on it, I gave up, and just moved both axes at the same speed until both reached their target. Means they usually arrive at (...) (12 years ago, 9-Oct-12, to lugnet.robotics.nxt)
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| | Re: Multiple Motors/Synchronizing Movement
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(...) That sounds like a sensible solution. Play well, Jacob (12 years ago, 24-Sep-12, to lugnet.robotics.nxt)
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| | Multiple Motors/Synchronizing Movement
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Hi all, I'm only just now making the transition from RCX to NXT. The power of the new servos is really something. For years I've "hard-coded" my own servo code to couple a rotation sensor to a gearmotor to do setpoint-based positioning for (...) (12 years ago, 22-Sep-12, to lugnet.robotics.nxt)
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| | Re: Eureka! Problem Solving with LEGO Robotics
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(...) (URL) ntspress.com> (12 years ago, 8-Sep-12, to lugnet.robotics, FTX)
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| | Eureka! Problem Solving with LEGO Robotics
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I'm happy to announce my book : Eureka! Problem Solving withe LEGO Robotics <link (URL) The book is intended for interested readers who wish to tackle demanding challenges from science and technology, and who want to be challenged by LEGO robotics (...) (12 years ago, 8-Sep-12, to lugnet.robotics, FTX)
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| | Re: WeDo Robotics Resource Set inventory
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(...) Found it through LEGO Education (go to set, select quantity, click on "resources in the box on the right and select "element survey") https://c10645061.ss...ements.pdf Jetro (12 years ago, 3-Aug-12, to lugnet.robotics.edu)
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| | Re: Faster Firmware/Motor Control
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(...) D'oh... I'm posting this because I'm sure I'm not the only one who missed this: I didn't realize there's a drop-down when BricxCC starts up, to select "Swan" instead of "RCX" when making the first handshake with the brick. After doing that, it (...) (12 years ago, 19-Jul-12, to lugnet.robotics.rcx)
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| | Re: Faster Firmware/Motor Control
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(...) (snip) (...) BrixCC doesn't recognize "wait1Msec", and when I try to download a program with it, it just gives me an error. That's kind of what I was getting at with the motor power stuff; I can tell the RCX can handle more motor powers, but (...) (12 years ago, 18-Jul-12, to lugnet.robotics.rcx)
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| | Re: Faster Firmware/Motor Control
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(...) Thanks for the link! (...) The documentation on this page (URL) mentions the following: "new wait1Msec opcode to perform program waits using one millisecond resolution" Maybe that is what you are looking for. (12 years ago, 18-Jul-12, to lugnet.robotics.rcx)
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| | Re: Faster Firmware/Motor Control
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(...) Hi Dave, Thanks - I tried to send you a note, but your email bounced... I found this site: (URL) downloading the 100x firmware, I can tell that it is a different firmware (different clock, tone on button press is different, etc.) - however, it (...) (12 years ago, 18-Jul-12, to lugnet.robotics.rcx)
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| | Re: Faster Firmware/Motor Control
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(...) I have it and use it exclusively. i'll mail you a copy when i get your e-mail sddess Take care, Dave K (...) (12 years ago, 17-Jul-12, to lugnet.robotics.rcx)
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| | Faster Firmware/Motor Control
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Hi all, One of the common ways I like to control the speed of a gearmotor (in NQC) is by introducing a loop, for example, like this: while(true) { OnFwd(motor); Wait(a); Off(motor); Wait(b); } I often do this as a motor approaches a setpoint (say an (...) (12 years ago, 17-Jul-12, to lugnet.robotics.rcx)
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| | Re: BrickOS Patches and Development
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(...) Excellent, Matthew. Many thanks for keeping the project alive and moving forward. I've uploaded a little patch with the edge counting (which I needed once upon a time when I tried to build a plotter without any rotation sensors) re-implemented (...) (13 years ago, 17-May-12, to lugnet.robotics.rcx.legos)
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| | Re: Question about NXT rechargeable battery
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It never hurts to ask LEGO customer support... (13 years ago, 17-May-12, to lugnet.robotics)
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