Linkage Warm Ups




4-Bar Linkages are a good introduction to planar linkages since they are relatively simple to build and understand.  You can play with different configurations with this 4-Bar Linkage simulator.




Put the Lever Paradox on your desk and your students or colleagues will continually puzzle over how it works.  Instructions are here.
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Lever Paradox, which uses a centrally supported parallelogram linkage

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LEGO Biters are here.
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Biters can grab larger objects since their jaws widen as the neck extends



LEGO Puncher instructions are here.




​LEGO Jumpers and Hoppers are here.
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Backflipping robot motorizable in LEGO? Difficult challenge!