RiverCleanser

Cyrus Tabrizi, 12/26/12
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      The front of the undercarriage has an extremely compact design. It sits on two bottles whose mounting required pushing the Lego pieces to the limits of their geometry –they are braced so tightly it is a feat in itself but the angle the bottles are ultimately set at make it all the more interesting. The housing is connected to the body at an angle and the liftarms connecting each bottle to the housing are attached at a second angle –this leans the large bottles in against each other and the weight of the robot. This is done while leaving room in the center and above it for the lift and motorized winch.


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The winch actually rests in the 5 stud space in the housing between the two bottles. The M motor that powers the double worm gear drive lies at an angle pointing downwards towards the water.''What good is a winch on a floating robot?'' one might ask. Simply put, the parts cost of this robot is not worth the possibility of letting it run loose on a lake without any physical means of repossessing it; should the batteries die or the receiver not work, the cable can be pulled on to bring it back to shore. This precaution assumes that before deployment you run the winch a little to obtain enough string to ground it and that you then run the winch whenever the robot goes farther away.