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From: Jeroen Belleman <jeroen@nospam.please>
Newsgroups: sci.electronics.design
Subject: Re: OT: Repeatably lobbing "projectiles"
Date: Fri, 22 Nov 2024 21:21:43 +0100
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On 11/22/24 03:55, Don Y wrote:
> On 11/21/2024 5:52 PM, bp@www.zefox.net wrote:
>> Don Y <blockedofcourse@foo.invalid> wrote:
>>>
>>> Ideally, I would like the mass to STOP at the destination (not bounce
>>> or roll away) but that's a secondary goal.
>>
>> Apologies if I missed it, but what are the masses and accelerations in 
>> play?
> 
> The masses are negotiable.  As is the acceleration (as long as you
> can overcome gravity).
> 
> The goal is to PLACE a "thing" (projectile) at a specific location
> relative to the launcher.  And, to have it reach that location
> with minimal interaction with anything located between the launcher
> and destination.
> 
> E.g., If something was located immediately adjacent to the
> launcher, the projectile's path should go OVER the obstacle
> and not expect to be able to pass THROUGH it.
> 
> Imagine using a nerf gun to lob those little sponge balls
> up, over obstacles -- but, being able to precisely control
> the range so they land where planned (no farther nor shorter)
> 
> But, to do so completely under automation, without any human
> intervention.
> 
> 

You may want to look at marble machines on youtube. This one
seems much like what you're asking for.

https://www.youtube.com/watch?v=-AZMmg0qq4A

Jeroen Belleman