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A comment on Motors for Makers: A Guide to Steppers, Servos, and Other Electrical Machines. Parent comment

Re:Motors for Makers: A Guide to Steppers, Servos, and Other... by dragontamer on Wednesday January 25, 2023 @10:15AM (#34519191)
My issue with motors is that all of their problems seem mechanical in nature to me.

I don't think anyone will really have a problem wiring up an H-bridge or whatever to run a motor.

I'm personally wondering how to use the physical properties of a motor to like, move Magic The Gathering cards around, or other real world tasks.

It very quickly becomes a mechanical levers / pullies / motion kinda problem, rather than electrical. And I have no idea how to study mechanical engineering.

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Like: how does a damn printer pick up just one piece of paper? Yeah yeah, there is a motor involved, but it's not the hard or interesting part.

There has to be little rotating mechanical fingers, the shape of the basin, the winding path the paper takes internally. Who designed that? How do I study that stuff?

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Re:Motors for Makers: A Guide to Steppers, Servos, and Other... by HeyLaughingBoy on Wednesday January 25, 2023 @03:55PM (#34524042)
...and often a second roller on the underside, slightly forward and running in the opposite direction to strip off any sheets that adhere to the top one.
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Re:Motors for Makers: A Guide to Steppers, Servos, and Other... by HeyLaughingBoy on Wednesday January 25, 2023 @03:53PM (#34524024)
> Like: how does a damn printer pick up just one piece of paper?

Ah, the task of Singulation! The answer is "with a lot of difficulty" :-)

I used to work for a large corp whose specialty is building high-speed paper handling machines for offices and industry. It is a far harder task than it seems on the surface.

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Re:Motors for Makers: A Guide to Steppers, Servos, and Other... by conductr on Wednesday January 25, 2023 @10:55PM (#34527504)
This is a great point and where I spend most my time and 3D printing. The coupling between motor and desired function is 90% of any project for me.
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Re:Motors for Makers: A Guide to Steppers, Servos, and Other... by relaxing on Thursday January 26, 2023 @02:52PM (#34537763)
>I'm personally wondering how to use the physical properties of a motor to like, move Magic The Gathering cards around

I would use a suction gripper on a 2-axis CNC platform.

> How do I study that stuff?

Take a printer apart to see how it works. The pros do it, too.

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