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(...) The key to making this work is to ensure that there is tension at either end of the run that keeps the worm gear at one end of the axle or the other until it hits a hard stop. For example, my robot arm uses rubber bands to hold the gripper (...) (22 years ago, 13-Nov-03, to lugnet.technic, lugnet.robotics)
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| | Re: One Input - Two Outputs?
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Hi! Here's something at Brickshelf that might, or might not, be of help: (URL) pretty compact. Although it feels like a dif. and a couple of ratchets would do the same thing (but not what you're looking for). (22 years ago, 13-Nov-03, to lugnet.technic, lugnet.robotics)
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| | Re: I'm passing the NQC torch...
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Dear Dave, Thank you for your great work. My Best Regards Paolo (22 years ago, 13-Nov-03, to lugnet.robotics.rcx.nqc)
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(...) I wasn't sure where to post this. I want to reply to everyone's replies, but there are quite a few and I don't want to clutter things up, so I'm replying under my original post.... You're welcome! I really appreciate all of the thank-you's - (...) (22 years ago, 13-Nov-03, to lugnet.robotics.rcx.nqc)
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| | Re: Motor Power
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One of the most import parts of a moco system is how much space the camera needs to cover. They can range from just pan and tilt, commonly called a "hothead" which will either record or playback only rotational data (HPB), all the way up to systems (...) (22 years ago, 13-Nov-03, to lugnet.robotics)
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| | Re: Proximity Sensors for Legway
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Hi Guys I have just updated the videos at (URL) It has balanced for several minutes on the kitchen floor in the mov00001 cofiguration.... but usually I start playing with the remote and that eventually throws it. I wasn't convinced before but I (...) (22 years ago, 12-Nov-03, to lugnet.robotics.rcx)
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| | Re: Motor Power
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(...) I've built a rudimentary motion control system with Mindstorms, but as the motors are not really steppers, I found I had some precision issues. Pulsing and timing never really got close enough for a repeatable move. You can use rotation (...) (22 years ago, 12-Nov-03, to lugnet.robotics)
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| | Re: I'm passing the NQC torch...
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Dear Dave, Thank you so much for your great contribution to the Mindstorms-community!!! Best regards, Dirk P.S.: John, all our hopes (trustfully) rely on you now! (22 years ago, 12-Nov-03, to lugnet.robotics.rcx.nqc)
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| | Re: Motor Power
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(...) Heavens, yes. I haven't done any heavy movement myself, but I've been awed in particular by TJ Avery and Beat Felber: TJ: (URL) Yes, that's a twenty-pound barbell. Beat: (URL) I don't know for sure, but there's gotta be 50 pounds of plastic in (...) (22 years ago, 12-Nov-03, to lugnet.robotics)
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| | Re: Motors on Sensor ports
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(...) Yeah... I wonder if that's a hardware limitation... (...) Well, that defeats the purpose... and I'm almost positive that powering a sensor port with 9v is a bad idea. (...) I dunno. Is it possible (I'm still in gr12 physics) that a circuit (...) (22 years ago, 12-Nov-03, to lugnet.robotics.rcx)
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| | Motor Power
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Hi all, I'm a lurker/newbie. I'm wanting to build a controlled platform that can move and rotate (sort of like a turtle using LOGO). I'd like this platform to carry my E-10 camera (weighs 37 oz./1048 grams). Can anything using the RCX/mindstorms (...) (22 years ago, 12-Nov-03, to lugnet.robotics)
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| | Re: 4095 Record and Play
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(...) Could you tell what the angular resolution of the slotted wheel was? Thanks, Mark (22 years ago, 12-Nov-03, to lugnet.robotics)
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| | Re: One Input - Two Outputs?
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(...) Well, I think this is going to work. Do you have any pictures of the logic/gearing used downline from the transmission? I am concerned with how the worm gear makes the transition from front to back and the resulting interaction with the drive (...) (22 years ago, 12-Nov-03, to lugnet.technic, lugnet.robotics)
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| | Re: Motors on Sensor ports
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(...) One thing you will find, is that you can't drive the motor backwards. Well, it won't go one direction. The direction depends on the wiring. Actually, that's just if you hook it to a motor port, AND a sensor port. I don't know how bad it is, (...) (22 years ago, 12-Nov-03, to lugnet.robotics.rcx)
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| | Re: I'm passing the NQC torch...
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A few hours after I was working with my brand new RIS kit, I knew the programming environment was too limited for my needs. Thanks God there was NQC out there, very young but already very solid, offering an entire new world of possibilities. Without (...) (22 years ago, 12-Nov-03, to lugnet.robotics.rcx.nqc)
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| | Re: 4095 Record and Play
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To add some further information, I popped the unit open last night and observed that, as I had hoped, mechanically the unit should be capable of operating correctly. Each motor channel has a mouse style slotted wheel and sensor, so the firmware (...) (22 years ago, 12-Nov-03, to lugnet.robotics)
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| | Motors on Sensor ports
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I'm just curious if there's any harm in connecting motors to active sensor ports... I know you don't get very much voltage/speed/torque, but you do get interesting readings that can be used to detect when the motor stalls. This is potentially a very (...) (22 years ago, 12-Nov-03, to lugnet.robotics.rcx)
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| | Re: One Input - Two Outputs?
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(...) That's one of the links I was trying to find the other day! Thanks. I'm not sure if it will do what I want, but I'll have to stare at it a while to find out. Keep the ideas coming, if there are more. -Duane (22 years ago, 12-Nov-03, to lugnet.technic, lugnet.robotics)
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| | Re: One Input - Two Outputs?
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(...) You also might check out a construct called a Directional Transmission. This is a simple setup using a sliding worm gear that does pretty much what you are describing. Michael Powell has a web page describing his design that I used (...) (22 years ago, 12-Nov-03, to lugnet.technic, lugnet.robotics)
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| | Re: One Input - Two Outputs?
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(...) One way to do that is to have a rubber-band/spring/shock holding "Output B" in it's starting position. Then, you can use a differential to move both A and B. Going forward, A will be easier to drive, so it will push A to it's limit, then B (...) (22 years ago, 12-Nov-03, to lugnet.technic, lugnet.robotics)
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