Sinusoidal Mechanical Kinetic Wave

Through a "Scotch yoke" mechanism and 13 sets of linked crankshafts, this device converts circular motion into vertical oscillations with a sinusoidal waveform

It demonstrates the mathematical relationship between trigonometric functions and simple harmonic motion, transformed by mechanical logic into visible rhythmic waves

Fully 3D printed, no additional hardware required (A1 mini cannot complete the printing due to size limitations)

All PLA printing

Assembled dimensions approximately 270*60*138 mm

The crankshaft splicing module has limit slots, no need to distinguish order, installing in sequence naturally separates each section by 30 degrees

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[**20260702 Update**] Many thanks to @**威武小将**'s feedback, which enhanced the connection of plate 7's crown gear. Previously there was a gap and the connection was rather thin

The corrected print profile has been added for optional printing. Thank you

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**[20260529 Updated]** Many thanks to @user_3854674140 for reporting the error. The files in the print profile have been updated

1. Corrected file errors for both side frames

2. The plates have been re-arranged. Previously, a plate arrangement issue might have prevented direct printing on P1S

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Assembly diagram

For any questions, please leave a comment