windwheel

magnets moving through a patterned coil: the winding is the sound

Spin Draw Erase Note arc

Pick an instrument, press Start audio, then play it on the canvas.

Instrument

Note sequence

The notes the path plays, in order, wound as you type; round a hoop it loops each lap. Octave optional: a bare name takes the root's octave first, then the one nearest the note before.

Key & tone

Root Octave Transpose

Brightness

Brighter = a tighter coil (a higher low-pass corner) with the largest magnet that fits it, so it's also quieter.

Physical Unbound

buildable

Motion

Motor Motor speed Gear hand & gyro only

Volume

Trigger Trigger sets the load across the coil

hold & pull down
open · matched · short

Rest position

Released = open circuit: silent, spins free. Halfway = R_load = R_coil: loudest. Fully pulled = short: silent, maximum Lenz drag. Hold Space to pull; on phones press harder if the screen reports force.

Winding Turns / section Pattern λ live after Fill alternating

Notes

Timbre Decay (ms)

Target EMF Design speed

live

Hardware

Magnet Ø Magnets on cord Coil radius Wire Ø sets R: loud into a speaker Path length Section length Cord mass matters when drag is strong Load

Changing hardware keeps the winding, like swapping a part on a built wheel, so you hear the difference. Redesign arcs re-aims the notes at the target EMF. Lenz drag is always on in Physical mode; Unbound can switch it off.

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