Mechanical Principles - Lego Technic

Machine demonstrating the conversion of rotary motion to reciprocating motion using gears. The bottom pair of gears drives the mechanism.

You can also look at some unusual mechanisms that demonstrate the work of various mechanical principles.

00:00 Conversion of rotary motion
01:15 Trammel of Archimedes
01:32 Pantograph
01:49 Eccentric conversion
02:06 Gear drive
02:15 Chain drive
02:24 Bevel gear drive
02:30 Bevel gears + universal joint
02:39 Worm gear
02:49 Slider-crank linkage
02:59 Scotch Yoke

Thanks to redshoebox, Lego Technic Mastery, 2in1 Bricking, and Sariel.
And, of course, Brick Experiment Channel, for the inspiration :)