Friday, April 6, 2012

Week 4: Finishing Assembly and Movement

The end of this week was filled with ups and downs.  We thought that we would completely finish assembly and be able to start moving on Thursday morning.  What we didn't expect was the inability for our gearbox to drive the weight of our robot, and the axles slipping within the coupling.  We spent the rest of Thursday trying to problem solve the issues we were having.  We tried everything from sanding down the plastic tubing to putting a pin through the tubing and axle.  Eventually the combination of all these adjustments were finish.  We tried hooking it up to the control box to test driving it again.  Unfortunately it seemed as though all our hard work had not paid off; the gears would spin until we put it down on the table.
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Friday morning we decided to change the gear ratio of our gearbox to the second highest gear ratio giving us much higher torque and less speed. This would give us more force to drive our robot.  Eventually we got the gearbox back together and went to test it.  To our delight it worked! Our robot was finally moving.  As we tested it around the table we found that when we tried to knock the balls off the tower they would bounce either out the back or the far side of our robot.  We next set out to fix this unforeseen problem.  We easily fixed it by bending a piece of aluminum and attaching it to the side of our robot.  As you can see in the video above, it now works.  The last thing we did for the day was attach sand paper to our driving wheels using the Epoxy.  We did this in order to increase the friction between the wheels and the competition table.


Tomorrow we will set out to Home Depot to paint our robot.

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