how to attach a camera to a single particle Question:
How do I get a camera to follow/move with a single particle?
My example:
I have created a large particle system and I would like to have the camera sit behind and follow a single particle as it floats around. If i could also have the camera be animatible (moving back and forth left and right as a secondary key framed animation that would be great).
research:
this question seems to have been asked before on here, but not answered. Also i found this https://blenderartists.org/t/particle-as-object-for-camera-track-to-constraint/640226
seems like a good idea but i don't know scripting and was not able to get it to work.
This script assigns first particle location to another object(In this case Empty). you can parent camera to this object for further manipulation.
import bpy 

ob = bpy.context.scene.objects[&quot;Cube&quot;]
target = bpy.context.scene.objects[&quot;Empty&quot;]

def my_handler(scene, depsgraph):
    eval_ob = ob.evaluated_get(depsgraph)
    particle_system = eval_ob.particle_systems[0]
    target.location = particle_system.particles[0].location 
         
bpy.app.handlers.frame_change_post.clear()
bpy.app.handlers.frame_change_post.append(my_handler)

If you are looking for alternate solution, i recommend Animation Nodes addon, which can do this more efficiently.