Subject:
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DC Motor and Battery question
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Sat, 26 Apr 1997 01:34:14 GMT
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Original-From:
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Yoni Garbourg <ygarbour@emeraldSTOPSPAMMERS.tufts.edu>
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Viewed:
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1305 times
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I am working on a robot using 12V Barber Coleman geared motors. I have
followed the instructions on connectingan external battery to the HB. I
have about 15V worth of "C" Alkaline batteries connected in series and
into the HB. The motors show they get about 12V each. There are some
discrepencies between the voltage of one motor and the other (like 0.2V).
My questions are:
1) what could be causing this differnce in load voltage when the motors
are both running at equal power ratings, and whether this discrepency in
voltage is significant?
2) During a run the robot starts out nice enough but after a few seconds
it's as if the battery begins to die and you have to pump more power into
the motors. Soon enough, it starts stalling at the same power rating wich
it was using mseconds earlier. If you pick the robot up and let the
wheels spin freely and then lay it down on the floor again, it lurches
forward again and begins the same cycle until it starts stalling in the
middle of execution. What could be causing this?
3) Anyone has good ideas on following lines in a grid (lines vertical and
horizontal). Where to position the sensors and how many? What do you do
in an intersection if you want to go straight? What do you do if you want
to turn? WHat do you do if you want to run horizontally in between
horizontal lines? How can you use the vertical lines in that case?
4) IC QUESTION: I have a PowerBook 520 Mac. The shareware version of IC
does not run on it for some reason. It starts up and then says :
e1=-98 e2=-98
and dies. Any ideas???
Thanks ahead for any future replies,
Yoni Garbourg
<< To succeed, Atificial Intelligence needs
1.7 Einsteins, two Maxwells, five Faradays,
and .3 Manhattan Projects." >>
-John McCarthy
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