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Automatic "rifled cannon"

Last post by RileyJames « Wed Feb 04, 2026 7:47 am
Posted in Combustion Cannons
Replies: 1
by Spuddy_boink » Fri Nov 21, 2025 12:25 am » in Combustion Cannons

First post

So I was looking at potato cannons (I know suprising right!?) And I notices they aren't terribly accurate so I figured hey make it more accurate and...

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Interesting idea, but that sounds like it could get complicated fast. Accuracy gains might be limited, and safety would be a big concern with...

1 Replies

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Last post by RileyJames
Wed Feb 04, 2026 7:47 am
DIY Automatic Marble Shooter from Recycled Materials

Last post by samlevy0515 « Wed Feb 04, 2026 12:57 am
Posted in General Cannon Discussion
Replies: 1
by annasmith » Sat Jan 03, 2026 3:13 am » in General Cannon Discussion

First post

I’m planning a DIY project to build an automatic marble shooter using only recycled materials like plastic bottles, PVC pipes, and old springs—no...

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Interesting project! You could try a spring-loaded lever system using tension from cut plastic bottles or rubber bands for force adjustment.
Have you...

1 Replies

432 Views

Last post by samlevy0515
Wed Feb 04, 2026 12:57 am
Powering a Nema 42 Stepper Motor

Last post by willaimwhite « Tue Feb 03, 2026 1:36 am
Posted in Off-Topic Hobbies
Replies: 1
by Beau » Mon Jan 26, 2026 9:59 pm » in Off-Topic Hobbies

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I plan to buy a NEMA 42 stepper motor and want to drive it with an Arduino. It draws 6 amps. What devices do I need to drive it?

Below are links to...

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Arduino only sends control signals, not power. A NEMA 42 stepper needs a dedicated driver, a high-current power supply, and thick wires to operate...

1 Replies

552 Views

Last post by willaimwhite
Tue Feb 03, 2026 1:36 am

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