now 2024.2.0... before 2024.1...
buona notte

Hi again
this night I woke up and knew what was the problem... I updated to latest version of c4d!
In the old version you could put the membrane in a nul and rotate this... still worked fine (with vertex normal default)...
This changed in last version.
@U

1000 grazie! Works!
How is it possible, that it worked before... and suddenly in all files direction was on vertex normal ?
Have a nice day
Henri

Hi again... need your help
I used your membrane (03)... perfect... for new orientation, I did put all in a null and rotated it... all good... worked.
Then I pressed something in c4d, and now all my files do not work anymore. For the vertical membrane, the membrane center moves up and down... if I rotate the main null (membrane horizonaly)it works fine again.
I did not find out, what setting in c4d makes this mismatch...
Please give me a hint

soooooo cooooool
mille grazie

rehello
perfect solution! The capacity is represented by the membrane (her tension is the voltage in my model)
now I will animate the cylinder filed 0... 100 %
please tell me what is the best way to bend in opposite direction ?
ufff... i am such a beginner...
Sorry animate the cylinder filed in the Displacer

Hi me again...
imagine a zylinder r = 100 , hight = 5
now I want do bend it like a membrane (border does not move)... how to do this?
I tried it with a half sphere, animating G(y)... but this does not work well, because when thickness = 0, particles pass through...
I need a cylinder with some thickness... can you help me again? Thank's Henri

you made my day!

hi again
yes I tried this... + goes right / - goes left... ok but if I want to keyframe the rate (in German version 'velocity') everything goes wrong. Please try to stop your particles at frame 50 with a keyframe rate 0...
the rate goes from +26 to 0 (all positive) but the particles revers
kind regards

reHello Dr. Sassi
I am using your CV4_2024_drs_23_ANel_01.c4d... now my problem: If I keyframe the velocity of the 'particles' (Cloner) to zero at frame 50, the particles will stop on frame 51... but first (at frame 25 (half of way)) they reverse direction
I could not find out, what to do, to avoid this. Please give me a hint, I am lost.

PS
What I need: positive speed == particles move to the right / negative speed == particles move to the left

Best wishes
Henri

Hello signore Sassi
You are incredible! ANel is technically what I was looking for. I needed some time to understand what you did. I will not exclude this version. This solution is fast, gives a realistic visualization of the electron flow.
Now I have to work on this, to make a closed circuit with this b-spline (coming out of a cube(source)... passing the bottleneck ... and going back to the source on a parallel line, to close the circuit.
I expected a solution with thinking particles... but this blowed my mind.
I will keep you informed.
Grazie mille

Hello from the Swiss (with repaired mitral valve)
I would like to represent electric current (non compressible) by little spheres moving in a tube. A resistance will be represented by a bottleneck in the middle of the tube. The whole system must be totally filled with particles at staring point.
When the particles are 'pushed' (emitted) from the left, all particles should move without overlapping to the right (and then be killed). I tried different methods (even fluid sim)... but no good result. What system is the easiest to realize this.
Grazie dottore
Henri