Subject:
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Re: Use a RCX as a Sensor port AND a Motor Output!
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Newsgroups:
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lugnet.robotics
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Date:
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Thu, 26 Aug 1999 13:20:36 GMT
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Original-From:
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Brian B. Alano <alano@kiva.(AvoidSpam)net>
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Viewed:
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748 times
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Great work! Extra motor output, speed sensing, stall detection and sensor/motor
multiplexing. Thanks for the research!
David Chen wrote:
> So, I was messing around w/ the RCX and hooked up a Micromotor to one of
> my output ports and lo and behold....I could control the motor by
> toggling the Sensor Type for that port between a Passive (None, Switch,
> Temp) mode = OFF and an Active Mode (Light, Rotation) mode = ON.
>
> Cool, an extra motor output off of a sensor port! Unfortunately, I
> don't seem to be able to run a full size Technics Motor (the geared one)
> off of the same scheme.
>
> All the same, using RcxCC (GREAT PROGRAM!!! btw) I accessed the direct
> controls setting the port to various modes to see what would happen. I
> also paralleled a Touch Switch and to the Micromotor to see what would
> happen, here's what I found:
>
> (Numbers represent readings on RCX screen for that Port, Temp readings
> appear useless. +/- = amplitude of variability around an inconsistent
> number)
> Sensor Setting: Passive (None, Switch, Temperature)
> Micro Motor Only Reading
> MOTOR IS OFF -------
> Mode Setting: Raw 14-16
> Boolean 1 spinning the motor gives no change
> Trans 0 " " " " "
> Period 0 " " " " "
> Percent 100 " " " "
> Celcius 9999
> F 9999
> Angle 0
>
> Sensor Setting: Active (Light/Angle)
> Micro Motor Only Reading
> MOTOR IS ON -------
> Mode Setting: Raw 1023, lower as slowed, down to below 30 when motor
> stalled
> Boolean 0 while running, 1 when stalled
> Trans +1 with each transition to on->off or off->on
> Period +1 with each transition of on->off->on or vice versa
> Percent 0 while running, 100 when stalled
> Celcius 9999 w/ brief transition to random temp when going from
> F stalled state to running state (not consistent)
> Angle 0, 1 occasionally when transitioning from stalled to moving
> (also not consistent)
>
> Sensor Setting: Passive (None, Switch, Temperature)
> Micro Motor+Switch Reading
> MOTOR IS OFF -------
> Mode Setting: Raw 14-16 (Switch OUT), 7-9 (Switch IN)
> Boolean 1 Switch or spinning motor has no effect
> Trans 0, Switch state has no effect
> Period 0 " " " " "
> Percent 100 " " " "
> Celcius 9999
> F 9999
> Angle 0
>
> Sensor Setting: Active (Light/Angle)
> Micro Motor+Switch Reading
> MOTOR IS ON -------
> Mode Setting: Raw 1023 w/ Switch OUT, lower as slowed, < 30 when motor
> stalled
> slower + < 800 w/Switch IN, lower as slowed, < 10 stalled
> Boolean 0 while running, 1 when stalled, Switch IN slows motor
> Trans +1 with each transition to on->off or off->on, Switch ignored
> Period +1 with each transition of on->off->on, Switch also ignored
> Percent 0 while running, 100 when stalled, > 40 with Switch IN
> Celcius 9999 w/ brief transition to random temp when going from
> F stalled to running state, < 40 C or < 100 F when Switch IN
> Angle 0 while running, -1 with Switch IN, but can be additive
> (also not consistent)
>
> It's getting late, will test out combinations of MicroMotor + Light
> Sensor or Rotation Sensor later.
>
> Hope you find this interesting, sorry about the long post.
> Dave
> --
> Did you check the web site first?: http://www.crynwr.com/lego-robotics
--
Did you check the web site first?: http://www.crynwr.com/lego-robotics
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Message is in Reply To:
 | | Use a RCX as a Sensor port AND a Motor Output!
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| So, I was messing around w/ the RCX and hooked up a Micromotor to one of my output ports and lo and behold....I could control the motor by toggling the Sensor Type for that port between a Passive (None, Switch, Temp) mode = OFF and an Active Mode (...) (25 years ago, 26-Aug-99, to lugnet.robotics)
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