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In lugnet.robotics.rcx, Steven Barile writes:
> My goal is to pulse LEGO train motors for better speed control
I was just experimenting with this a few days ago. An RCX using PWM does a far
better job of driving the LEGO train motors than the simple variable voltage
from the LEGO train control. You can make a train creep around just above
stall speed consistently, even through curves which would stop the train with
the train controller at the lowest setting.
If I remember the Internals page correctly, the PWM tables are stored in the
FW, so they could be altered to a profile more appropriate for trains if the
current settings are unsatisfactory...
--Ben
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Message has 2 Replies:
 | | Re: RCX onboard timer and motor pulsing
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| (...) For fun, with a second sensor you can make a gouvenor, which takes it speed from the track, and with a third motor you can change the gouvenor setting :-). It works reasonably with the ligth sensor as well. Then it is analog. But I found the (...) (25 years ago, 6-Jan-00, to lugnet.robotics.rcx, lugnet.trains)
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Message is in Reply To:
| | RCX onboard timer and motor pulsing
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| Hi All, Since I am and train head I don't read .RCX (this topic might be well exhausted) I just read thru a third party book on the RCX and in one place he said the timer granularity in 1/10 sec and in another it was 1/1000 sec. My goal is to pulse (...) (25 years ago, 23-Dec-99, to lugnet.robotics.rcx, lugnet.trains)
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