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Type: Mini Sumo 
Built by: Chris Jorgensen 
Cost: $325.00 
Completion Time: 30 hrs. 
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Comments and General Information:

PDXBot.02 Summary
A programming error, quite frankly, was the competitive demise of Giskard. I allocated only half a byte to store the ground sensor contrast reading instead of an entire byte. The less glossy competition ring didn't register on its ground sensors, as the test poster ring at home did. I corrected the problem after the first match, only to forget to wait for the robot to flip down before calibrating the sensors. It ran out of the ring by itself in both matches.

As a fun fact, the tires are actually peanut butter lids with rubber bands wrapped around them. The servos are the same as from Junk and Just Big Boned, which get 90 oz./in. torque and have metal gears. It was named after a robot from Isaav Asimov novels.

Components and Parts:
Engineering Successes:

  • Powerful motors
  • Scoop flush with ground
  • Large tires
  • High speed/torque
  • Easy to assemble/disassemble
  • Rechargeable NiCd battery
  • Proper weight
  • Stickers, cool as always
  • Low cost (only new board, other parts from old 'bots)
  • OOPic processor A 2.0

Engineering Failures:

  • Unstable flip-down
  • Too long
  • Poor vision
  • Poor program
  • Too light of tires



Giskard Giskard Giskard



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