pic: KING TeC 2169 Lift Gear

[Tom Ore]

We also were concerned about this problem - we didn't want to run the motors against the hard stop at the top and bottom of the elevator travel.

We use a pot to control travel of the elevator. Since it's possible for the pot to come loose and change value we put a second pot on the other side and compare the two to make sure they agree. We also added a light sensor that checks the position of the elevator in the middle of its travel as another check. (We've never made a robot with an elevator before so we were a bit cautious.)

If the elevator comes down on top of a tote it's possible for the elevator to tip the robot over. (This happened at our week 0 event when the HP tried to add a 7th tote and the co-driver tried to block it by dropping the elevator.) To stop the robot from tipping over, the software/electrical team added a sensor that detects when the front of the robot lifts off the ground. (I'm not sure what sensor they added.)

[pmangels17]

A quick question, what material is the gear that this gear was meshed to? You probably want to have them be the same material, that has given us issues in the past. That doesn't mean don't change the gear material, but if you have to then change both gears.