 | | Re: multiple motors
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(...) Yes, thank you - you explained it very well. The day after posting the question, I realized a differential would solve the problem... but you stated the solution far more clearly than I had thought of it. Now, of course, I'm trying to think (...) (21 years ago, 26-Nov-03, to lugnet.robotics.rcx)
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| | Re: multiple motors
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(...) Yes, that was the problem Brian was having. And, because the LEGO motors are so efficent, they work really well as generators. So, if you hook two together, and try to turn 1 and stop the other, you will have problems. I'm not sure I explained (...) (21 years ago, 25-Nov-03, to lugnet.robotics.rcx)
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| | Re: multiple motors
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(...) I'm just thinking out loud here, but it seems that the problem with the two middle motors is that they are wired together. So even if the RCX is told to float the motor output, both motors will want to turn together. If one turns, it will act (...) (21 years ago, 25-Nov-03, to lugnet.robotics.rcx)
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| | Re: multiple motors
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(...) Well, I've never actually tried running six motors directly from the RCX. However, I have used three motors to drive a sumo robot. And I've also used four motors (two on each side) to drive six wheels (two on the right, two on the left, and (...) (21 years ago, 25-Nov-03, to lugnet.robotics.rcx)
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| | Re: multiple motors
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(...) ...I love understatment. sigh... (...) OK, in trying to implement this I've come to an interesting impasse. Calculations suggest that for a 4 lb sumobot with reasonable tires would "benefit" from six motors, three on each side (differential (...) (21 years ago, 25-Nov-03, to lugnet.robotics.rcx)
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| | ERIKA 1.2 available for download...
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ERIKA 1.2 available for download! This version includes: - enhanced infrared support (single and multi-byte send!) - infrared transmission bugfix - PWM support now can be installed on timers T80/T81 depending on thefeatures (notes, IR transmission) (...) (21 years ago, 24-Nov-03, to lugnet.robotics.rcx)
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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 (...) (21 years ago, 12-Nov-03, to lugnet.robotics.rcx)
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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 (...) (21 years ago, 12-Nov-03, to lugnet.robotics.rcx)
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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, (...) (21 years ago, 12-Nov-03, to lugnet.robotics.rcx)
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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 (...) (21 years ago, 12-Nov-03, to lugnet.robotics.rcx)
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