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oops! Thanks Dr. Martin for catching my mistake about the rotation
sensor.
- Nick -
"Fred G. Martin" wrote:
>
> just to be clear, there are two types of LEGO sensor: active and
> passive:
>
> * passive -- touch sensor, temperature sensor.
> * active -- light sensor, rotation sensor (aka shaft encoder, angle sensor)
>
> without expansion board, the HB can only deal with the passive
> sensors.
>
> with expansion board, you also can use the active sensors. the active
> sensors are somewhat sophisticated, you alternately charge them to +9v
> and then read back their value. this must be done repeatedly -- the
> HB does it at 250 hz -- to maintain counts with the rotation sensor.
>
> fred
>
> In your message you said:
> > The LEGO sensors and the RCX are the same thing. The standard Handy
> > Board (without an expansion board) can handle all of the passive LEGO
> > sensors such as the touch and rotation sensors. The expansion board
> > is needed to use the active sensors such as the light sensor and
> > others that have been developed by the sensor experts like Michael
> > Gasperi and others. The big advantage of the expansion board is the
> > ability to directly control R/C servos as well as the active LEGO
> > sensors.
> >
> > Good luck and have fun,
> > - Nick -
> >
> > Scarius wrote:
> > >
> > > Some of the expansion board kits (all? sorry, haven't been paying much
> > > attention to the extension boards yet) mention that they have slots for
> > > LEGO style sensors. Does this mean the sensors they use on their
> > > RCX/Mindstorms stuff? What's the difference, are the LEGO sensors based
> > > around different voltages as opposed to normal Handyboard sensors? We've
> > > been using LEGO motors (but not sensors) in our lab, is there a
> > > difference there as well? Somewhat obviously, I don't know much about
> > > electronics :)
> >
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Message is in Reply To:
 | | Re: LEGO sensor
|
| just to be clear, there are two types of LEGO sensor: active and passive: * passive -- touch sensor, temperature sensor. * active -- light sensor, rotation sensor (aka shaft encoder, angle sensor) without expansion board, the HB can only deal with (...) (27 years ago, 10-Jan-00, to lugnet.robotics.handyboard)
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