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The following
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The information provided
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damage sustained by the use of this information. Anything you do
with your equipment is your responsibility. Your mileage may vary.
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Dremel (If you don't have one,
buy one. You'll thank yourself later)
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X-Acto Knife (For cleaning up
all of those plastic pieces you hacked off with the Dremel.)
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Drill (A drill press would be
my first choice, but you can do most, if not all, of the holes
without it.)
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Center Punch (Not required,
but real handy for drilling holes in the right place.)
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Drill Bit 1/8"
- Remove center post in the brick.
- Mark the location of the light sensor, and make
a divot with the center punch.
- Drill an 1/8" hole through both sides of
the brick.
With the new part in hand, I wanted to test the
effectiveness of it. I drew out a radial grid pattern with 5 degree
separation and 2 inch radius increments. The light sensor is placed at
the origin. The light source is a AA Mini-Maglight with the cap removed.
The RCX datalog feature was used to record the light sensor values.
Below are graphs of the results. The ambient light reading was removed
from the graphs.
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| Light
Sensor Values w/o Shroud |
Light
Sensor Values w/ Shroud |
The shroud was effective on narrowing the
resolution of the light sensor. It has giving the sensor a better sense
of direction. Unfortunately, the shroud also increased the average
ambient light value, and decreased the average maximum value.
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