 | | Re: Boosting power in a gear train / torque amplifier
|
|
Alexander, Thanks for the differential/pole-reverser idea. Based on your description, I was able to get a prototype running very rapidly! I'm still seeking a clean more mechanical version, but this certainly will work for now. Along the lines of a (...) (18 years ago, 23-Mar-07, to lugnet.technic, lugnet.robotics)
|
| |
| | Robo Quad - Stage Two and Three
|
|
(URL) Robo Quad - Stage One notes> Stage Two - Completed Stage Three - Completed Stage Four - Work in progress (URL) Robo Quad - Gallery> Stage One - Completed (URL) drive system>> (URL) front paw - top>> (URL) front paw - rear>> (URL) front paw - (...) (18 years ago, 22-Mar-07, to lugnet.announce, lugnet.robotics, lugnet.technic, lugnet.build.mecha, FTX)
|
| |
| | Re: BrickFest™ PDX 2007 - Robotic Easter Egg Hunt
|
|
Do we loose points for melting the eggs? At any rate, it makes the foil stay on better. ;-) --Peter (18 years ago, 22-Mar-07, to lugnet.events.brickfest, lugnet.robotics, FTX)
|
| |
| | Re: BrickFest™ PDX 2007 - Robotic Easter Egg Hunt
|
|
(...) Will, If you do manage to combine RCX & NXT, I expect it will look mashed-up, but unlike all the other stuff at BF, this is not a how-does-it-look competition. No matter how it looks, I'm sure people will cheer for robots that try to give them (...) (18 years ago, 21-Mar-07, to lugnet.events.brickfest, lugnet.robotics)
|
| |
| | Re: BrickFest™ PDX 2007 - Robotic Easter Egg Hunt
|
|
(...) I'll give it a whirl! I wouldn't want you to get the NXT prize just because you were the only one entered. :) My 'bot may be a mashup of RCX & NXT. It will likely be horrible ugly, and exhibit questional operational effectiveness, but fame and (...) (18 years ago, 21-Mar-07, to lugnet.events.brickfest, lugnet.robotics, FTX)
|
| |
| | Re: Boosting power in a gear train / torque amplifier
|
|
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)
|
| |
| | Re: Boosting power in a gear train
|
|
(...) 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)
|
| |
| | Re: Boosting power in a gear train
|
|
(...) 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)
|
| |
| | Re: BrickFest™ PDX 2007 - Robotic Easter Egg Hunt
|
|
(...) 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)
|
| |
| | Re: Boosting power in a gear train
|
|
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)
|
| |
| | Re: BrickFest™ PDX 2007 - Robotic Easter Egg Hunt
|
|
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)
|
| |
| | Re: Boosting power in a gear train
|
|
(...) 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)
|
| |
| | Re: Boosting power in a gear train
|
|
(...) ... (...) 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)
|
| |
| | Boosting power in a gear train
|
|
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)
|
| |
| | Re: Microsoft Robotics Studio
|
|
(...) 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)
|
| |
| | Re: Enhanced standard NXT firmware
|
|
... (...) 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)
|
| |
| | Re: Could not upload program output file to PC
|
|
(...) 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)
|
| |
| | Could not upload program output file to PC
|
|
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)
|
| |
| | Re: Enhanced standard NXT firmware
|
|
(...) 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)
|
| |
| | Re: Enhanced standard NXT firmware
|
|
(...) 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)
|
