LED string length 10-50m step 33-50cm.

The garland was created using Corona Scatter the composition is edited
through a spline (wire). The number of lamps automatically changes depending on
wire length with the same pitch.
The Spacing value sets the pitch of your choice.

It is important that in the spline (in the wire) sharp corners should be from two vertices otherwise some of the lamps will look up or to the sides.
In case of incorrect joining of all lamps with the wire correct through the main (yellow) vertex the initial direction of the spline is horizontal.
The scene should be in mm.

max 2013 corona
obj without interactivity
mtl