 | | Re: Boosting power in a gear train / torque amplifier
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I think one way to do this uses a differential (URL) and a pole reverser (URL). I don't have a picture to hand but the idea is simple. One side of the differential is connected to the low torque "input axle". The differential housing is connected to (...) (18 years ago, 21-Mar-07, to lugnet.technic, lugnet.robotics)
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| | Re: Boosting power in a gear train
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(...) A torque amplifier is EXACTLY what I need; thank you! Now I just need to figureout how to build one. Google has a few pix, two lego ones actually. I hope this will get me where I need to go! Thanks for the help, Rafe (18 years ago, 21-Mar-07, to lugnet.technic, lugnet.robotics)
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| | Re: Boosting power in a gear train
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(...) The original Mindstorms rotation sensor turns very easily - I think that three stud-balls of torque would be plenty to turn it. The more recent NXT stuff is another matter - I don't have a NXT system so I have no clue as to the problems of (...) (18 years ago, 21-Mar-07, to lugnet.robotics)
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| | Re: BrickFest™ PDX 2007 - Robotic Easter Egg Hunt
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(...) The walls are going to be about two inches tall. The houses will be considerably taller than that. Probably on the order of three to five times taller. By the way, there's only a bit over a week before BrickFest. If anyone else is considering (...) (18 years ago, 20-Mar-07, to lugnet.events.brickfest, lugnet.robotics, FTX)
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| | Re: Boosting power in a gear train
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More information about your application would be helpful. The first thought that jumps to mind is "Use a more powerful motor. Duh!". So there must be something that I am missing. There must be some reason you need to use the puny motor. Maybe you (...) (18 years ago, 20-Mar-07, to lugnet.technic, lugnet.robotics)
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| | Re: BrickFest™ PDX 2007 - Robotic Easter Egg Hunt
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David, how high is the shortest house? Is it taller than the side panels? ---Will (18 years ago, 20-Mar-07, to lugnet.events.brickfest, lugnet.robotics, FTX)
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| | Re: Boosting power in a gear train
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(...) How much torque do I need to drive the rotation sensor? This was my first plan of action, but I was limited because I don't have a rotation sensor other than the NXT motors themselves! From a purist point of view, I would really like a (...) (18 years ago, 20-Mar-07, to lugnet.robotics)
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| | Re: Boosting power in a gear train
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(...) ... (...) So use a rotation sensor to sense the position of the weak input - and use a NXT motor to track that position and drive all of the gears. You can change the ratio of the input angle to the NXT motor's angle in software and thereby (...) (18 years ago, 20-Mar-07, to lugnet.robotics)
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| | Boosting power in a gear train
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I have a gear train that is driven by a very weak input, very small torque. There are some places in the gear train where I have some worm gears driving some 'regualr' gears. As I go along the gear train, I boost the output as much as I can with (...) (18 years ago, 20-Mar-07, to lugnet.technic, lugnet.robotics)
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| | Re: Microsoft Robotics Studio
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(...) Please let me know if you have much success. Several of us working on a robotics project tried the Oct and Nov 2006 releases and could not get the out-of-the-box Lego NXT demo to stay connected for more than about 60 seconds, even after hours (...) (18 years ago, 19-Mar-07, to lugnet.robotics)
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| | Re: Enhanced standard NXT firmware
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... (...) Hi John, I just tried to load it and just tested the "Try-me" light sensor. It worked fine. Not so much help, but I can try some more another day. Good work. Rasmus (...) (18 years ago, 19-Mar-07, to lugnet.robotics.nxt.nxthacking, lugnet.robotics, lugnet.robotics.nxt)
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| | Re: Could not upload program output file to PC
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(...) In my experience, this sort of problem occurs when the file size is zero (or, more precisely, it contains zero bytes) or it is not properly closed. Can you send me a copy of your program so I can see if it has any problems? John Hansen (18 years ago, 19-Mar-07, to lugnet.robotics)
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| | Could not upload program output file to PC
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Hi, I am a new user of the Lego robot and would like to ask a question. I ran into a problem with uploading a file from the NXT to my PC via USB which I did not understand why. Basically I have written a program that reads light sensor values (port (...) (18 years ago, 19-Mar-07, to lugnet.robotics)
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| | Re: Enhanced standard NXT firmware
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(...) I would have liked to have one permanently, but it seems a little steep. Last summer I got a limited edition (32KB or something) along with the an AT91 evaluation board. (...) Perhaps Section 5.1 is useful: (URL) I just tried to post but it (...) (18 years ago, 17-Mar-07, to lugnet.robotics.nxt.nxthacking, lugnet.robotics, lugnet.robotics.nxt)
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| | Re: Enhanced standard NXT firmware
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(...) It actually was not a very big deal. I was familiar with the firmware source code since I had looked at it quite a bit since it was released, trying to figure out how to get it to compile with GCC. All the RIC bug fixes were things I figured (...) (18 years ago, 17-Mar-07, to lugnet.robotics.nxt.nxthacking, lugnet.robotics, lugnet.robotics.nxt)
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| | Re: Enhanced standard NXT firmware
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(...) <snipped description> Holy crap John! You've been really busy! For anyone poking around in this forum, I can say that what John has done is pretty significant. I have written my own firmware for the brick so I know how much work must have gone (...) (18 years ago, 17-Mar-07, to lugnet.robotics.nxt.nxthacking, lugnet.robotics, lugnet.robotics.nxt)
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| | Enhanced standard NXT firmware
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Over the past couple days I have used the IAR Embedded Workbench to implement some enhancements and bug fixes for the standard NXT firmware. The bug fixes are as follows: 1. RIC drawing code incorrectly checked the size of the OP_LINE structure for (...) (18 years ago, 16-Mar-07, to lugnet.robotics.nxt.nxthacking, lugnet.robotics, lugnet.robotics.nxt)
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| | Connection to Bluetooth
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Dear All, I have spend a lot of time to get connection with Bluetooth using Bricx. I using the latest nxt software! I have connection with the NXT with Bluetooth, I see on the display of the NXT "<>" After starting Bricx Command Centre I get the (...) (18 years ago, 16-Mar-07, to lugnet.robotics, FTX)
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| | Re: Bricx Command Centre and the NXT
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(...) BricxCC uses the NXT Fantom API layer to communicate with the NXT via both bluetooth and USB. If you have the NXT Fantom drivers installed properly (which, if you can communicate with the NXT via the standard NXT software, you must) then when (...) (18 years ago, 15-Mar-07, to lugnet.robotics)
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| | Re: BricxCC release 3.3.7.16
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(...) Please respond with detailed information regarding your configuration. Are you using the serial tower or are you using the USB tower? Do you have the firmware already installed on your RCX brick? What does the LCD screen look like when your (...) (18 years ago, 15-Mar-07, to lugnet.robotics)
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