27404 Parallax Inc, 27404 Datasheet - Page 189

• Manufacturer Part Number: 27404
• Description: COMPETITION RING FOR SUMOBOT
• Manufacturer: Parallax Inc

Specifications of 27404

• Accessory Type: Hobby and Education
• Product: Microcontroller Accessories
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With/related Products: SumoBot®
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Contains lead / RoHS non-compliant

There are lots of questions to consider and test when designing a search pattern. For
example, is it better to look around right after turning away from the tawara, or is it better
to get away from it so that your SumoBot isn't at a disadvantage? You will have to
answer these and other questions through experimentation.
One very important thing to keep in mind when designing a search pattern is how far
your IR detectors can realistically see? While the infrared detectors might be good at
seeing a white wall a meter or more away, a black SumoBot opponent isn't nearly as
visible. One thing that will help is to measure the maximum reliable detection distance of
the other SumoBot at the frequency you are using. Then, make a plot like the one shown
in Figure 4-14. It will make it easier designing a path for your SumoBot to see as much
as possible of the ring with the least travel time.
√
√
√
Add the
' -----[ Initialization ]------------------------------------------
GOSUB Calibrate_Qtis
GOTO Look_About
Run the modified program and verify that it makes the SumoBot look around
before moving forward.
Design, program, and test your own SumoBot Search Pattern.
GOTO Look_About
command to the end of the Initialization routine.
' Determine b/w threshold
' <--- Add Start mid search pattern
Figure 4-14
IR Detection Range
During Search
Pattern