• Prototype 1:
  

• Latch mechanism closeup:
  
• Lessons Learned
  • We should make the base bigger (~12 in diameter circle)
  • I built ramp mirror image of what it's supposed to be.
  • Use washers, they prevent nuts from loosening
  • Keep it open for putting ramp on other side
  • If we have acrylic wheels, they will slip, preventing amp spikes that may blow the H bridge.They stick very well
  • Install off switch
  • try other motors. we are way too torquey
  • use teflon spacers to reduce gap and
  • Concerned about guide unfolding and getting stuck.Need to bevel edge and have most protruding point lower than height of wall.
  • weshould consider using the maxon motors for driving. Others are doing it!
  • Move wheel in from edge or add skirt. Otherwise it might rub against bottom of scoring bumper.
  • We need a skirt that goes both up and down to prevent above problem.
  • Use a weak spring. This will let ski guidefold back and get out of wy. This also means we might need a bit more torquw and less slippery wheels.
  • If we should decide to use tape extenders with swithces, also use timers that will trigger change in directio. This way we won't just keep running into wall if we are off.
    • We could also use a double foldout guide
  • Use thickcrazy glue to hold parts down.
  • Make sure you get the correct oorientaion, not mirror image.
  • Prototype order of operations:
    • spin around clockwise, release front ski guide
    • spin counterclockwise
    • drive forward, release back ski guide
    • front bump hit, reverse directione
    • back bump hit, reverse direction
    • This needs switchesor timers
  • Another order of operations
    • spin around, release front ski guide
    • drive forward, release back ski guide
    • use ski guide to guide around corners
  • we need to know how much force is needed to trigger bumper!!!!
  • Need to add:
    • 2 minute timer
    • secondski guide

-- SamsonPhan - 21 Feb 2009

-- SamsonPhan - 22 Feb 2009