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Failed to connect to MySQL: (1203) User howardkn already has more than 'max_user_connections' active connectionsPath: ...!eternal-september.org!feeder2.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail From: Don Y Newsgroups: sci.electronics.design Subject: Re: OT: Repeatably lobbing "projectiles" Date: Thu, 21 Nov 2024 19:55:17 -0700 Organization: A noiseless patient Spider Lines: 28 Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Injection-Date: Fri, 22 Nov 2024 03:55:25 +0100 (CET) Injection-Info: dont-email.me; posting-host="1378a24f9a90252c3cd9b8e48690e2d3"; logging-data="954472"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX18SrDFgOG4bLKz/m65C357t" User-Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:102.0) Gecko/20100101 Thunderbird/102.2.2 Cancel-Lock: sha1:35PY6N7F6yKEsbx/f6rHCcvuzIA= Content-Language: en-US In-Reply-To: Bytes: 2323 On 11/21/2024 5:52 PM, bp@www.zefox.net wrote: > Don Y 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.