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In lugnet.robotics.edu, Jetro de Chateau wrote:
> Can anyone help me get a copy of the inventory for the WeDo Robotics Resource
> Set 9585?
>
> Many thanks in advance.
>
> Jetro
Found it through LEGO Education (go to set, select quantity, click on "resources
in the box on the right and select "element survey")
https://c10645061.ssl.cf2.rackcdn.com/resources/979585_wedoelements.pdf
Jetro
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Can anyone help me get a copy of the inventory for the WeDo Robotics Resource
Set 9585?
Many thanks in advance.
Jetro
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Hi All,
I'm in the planning stages for having the first Online LEGO NXT Interfacing
Workshop. The hands-on event will be conducted using Skype as participants will
be learning the basics of electronics interfacing aided by Hi Technic's
Prototype Sensor Development Board along with the "off the shelf" electronic
components and the LEGO NXT. For additional information, I've had a flyer for
downloading along with some general details about the workshop at my blog
<http://www.family-science.net/Blog.htm>. Check it out!!!!
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In lugnet.robotics.edu, Elizabeth Mabrey wrote:
> I don't want to frustrate them with the
> fluctuating IR ball.
It's not ideal for stock LEGO sensors I think, but it might be good to point out
to them that the reason it blinks is to make things *easier*. With a source
pulsing near a known frequency, ambient conditions are much easier to cancel
out.
> I am planning to find a constant "lighted"
> ball for them instead, but no luck.
I've not seen them either. But I would think this is something a friend could
make with a battery pack and a bunch of near-IR LEDs. Perhaps a first step (for
them to practice on) can be a "target RCX" driving 3 light sensors (or an NXT
driving 4). You might even be able to stack two RCX light sensor on each RCX
port, to get 6 near-IR (although dimmer) light sources, and arrange them in a
circle facing out.
> the official IR soccer ball has a very unreliable
> IR emission. There are times my IR sensor just
> simply did not get any feedback even when it is
> right next to it.
It might be that the pulses of the IR ball were out-of-sync with the reads of
the light sensors. Have you tried looking at the IR ball through a stock video
camera? These usually have very good IR sensitivity, so you can "see" the IR in
the playback. Spybots are rather impressively flashy on video.
--
Brian Davis
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Hi all,
I am trying to get some middle school kids playing a bit with the robosoccer
idea. I don't want to frustrate them with the fluctuating IR ball. So, I am
planning to find a constant "lighted" ball for them instead, but no luck.
Wonder if anyone may have a suggestion.
By the way, the official IR soccer ball has a very unreliable IR emission.
there are times my IR sensor just simply did not get any feedback even when
it is right next to it. For my high school kids, I had them to implement
some kind of either probability, or just simply skip the reading if there
are spikes of drop. Therefore, for the younger ones, I'd like to find a
lighted ball. any suggestion is appreciated.
--Elizabeth
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