 | | Re: Motor control
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| Noh tere! Jason J. Railton <j.j.railton@cwcom.net> wrote in message news:GDDJD1.J0K@lugnet.com... (...) as (...) 9V motors are quite easy to disassamble and reassamble, all you need is a screw driver. I guess that is clear by now. And yes there is a (...) (23 years ago, 16-May-01, to lugnet.trains)
| | | | | RCX motor pulsing
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| Since you guys are talking about this I have a question. I've asked it before and there was no responce. Here it goes: I want to use the RCX to control a single train thru the rails by providing "pulsed" voltage to have fine control over the trains (...) (23 years ago, 18-May-01, to lugnet.trains, lugnet.robotics)
| | | | | Re: RCX motor pulsing
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| What kind of train you to use (Lego, Trix, other) ? Although I've no experience, I have the feeling that only a Lego train could be controlled, as far as I know Trix uses AC current and for the other brands I've the feeling all specs are too low. (...) (23 years ago, 19-May-01, to lugnet.trains, lugnet.robotics)
| | | | | Re: RCX motor pulsing
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| I don't use the RCX but I do know know to control a motor. I would picup the power and "pulse" the motor will e.g. 400 Hz, but pulse-wide-modulated. The idea is that the motor gets full power but not all the time meaning thar it has full strenght (...) (23 years ago, 19-May-01, to lugnet.trains, lugnet.robotics)
| | | | | Re: RCX motor pulsing
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| (...) The good news is that the RCX outputs are pulse-width modulated. bye Bernardo New e-mail: dibbe@freestation.it (23 years ago, 19-May-01, to lugnet.trains, lugnet.robotics)
| | | | | Re: RCX motor pulsing
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| I have controlled LEGO trains via the RCX many times. The question is how to control the speed of the train under a finer ganularity then just the native power levels. snip ...this comment has promise! Can you vary the width of the pulse? <The good (...) (23 years ago, 22-May-01, to lugnet.trains, lugnet.robotics)
| | | | | Re: RCX motor pulsing
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| (...) Yes. When you set the power for an output port actually you select the duty cycle of a square wave. The granularity depends on firwmare. With standard firmware you can select between 7 power levels; legOS has 255 levels. bye Bernardo New (...) (23 years ago, 22-May-01, to lugnet.trains, lugnet.robotics)
| | | | | Re: RCX motor pulsing
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| I have been using RCXs to control tracks, you also can control signal in the (...) (23 years ago, 28-May-01, to lugnet.trains, lugnet.robotics)
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