Useless machine that utilizes different mechanical principles. Enjoy!

00:00 Schmidt coupling
00:17 Constant-velocity joint (CV joint)
00:30 Universal joint
00:42 Bevel gears
00:53 Slider-crank linkage
01:08 Sun and planet gear
01:25 Scotch Yoke
01:40 Chebyshev Lambda Linkage
01:58 Chain drive
02:13 Belt drive
02:32 Constant-mesh gearbox
02:50 Oscillating direction changer
03:06 Torque limiter (Lego clutch)
03:19 Winch
03:34 Rack and pinion
03:47 Offset gears
04:00 Uni-directional drive
04:22 Camshaft
04:38 Intermittent mechanism
04:52 Worm gear
05:11 THE FINISHED MACHINE

Thanks to redshoebox, Lego Technic Mastery, 2in1 Bricking and Sariel. Many of these builds are inspired by (shamelessly copied from) their work.

MUSIC
HSM Synthesizer Challenge 2 – Clavis Aurea
Anders Enger Jensen
https://youtu.be/wUyLfCSi_T0