Hey! This thing is still a Work in Progress. Files, instructions, and other stuff might change!


by 2ROBOTGUY, published

LED LEAF by 2ROBOTGUY Nov 26, 2011
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LED LEAF by 2ROBOTGUY is licensed under the Creative Commons - Attribution license.

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After seeing an LED helicopter (https://www.youtube.com/watch?v=zEm2yhqjDGg) I wanted to build my own. Instead of using their concept, I wanted a Maple seed design. The leaf should fly 30-40 Feet High and Spin Back to earth. This is my 4 revision and should work.

Background information about the last 3 designs:

LED Leaf V1- Smaller Area with a 5mm tall leading edge & .5mm Thick wing.
Launched well, but did not spin. Weight distribution issues.

LED Leaf V2- Same size a V4. Wing thickness .5mm leading edge 3.5mm tall.
Same problems as V1, Launched well but did not spin.

LED Leaf V3- Same size a V4. Wing thickness .25mm (1 layer) leading edge 3.5mm tall. Would spin but plastic on the wing did not stay together.

LED Leaf V3.5- Took the LED Leaf V3 and Traced the profile in paper. Removed the .25mm wing (leaving the leading edge) and super glued the paper to the plastic. LED LEAF V3.5 launched well and spun every time. 1/2 the time the LED leaf would only launch 15 feet. I think this is due to the paper wing not being supported on the tail end. When launched the tail end would cause the LED leaf to become unstable in flight. Thus making it turn and start to spin.

Thinner Blades with a Glue on wing

Led Leaf V5- Lightest Version yet. Best Model to print! Still can Use LED Leaf V4 PDF for the Wing.

(Large print! Not designed for Makerbot's Yet, just Repraps)


Print: (@ 0.25mm or .125mm layer height)

LED_LEAF_PAPER_V4.PDF (Inkjet printer)

CR2303 Battery
5mm LED
Small rubber band (For battery)
Two large rubberbands (For launcher)

1) Apply glue to Plastic part
2) Center part on paper and apply
3) Let glue set
4) Cut Along Edges
5) Add Battery to Assembly
6) Connect LED to Battery
7) Wrap rubberband around Assembly.
8) Add Rubberbands to Launcher
9) Launch @ Night

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Thin plastic bags from the grocery or hardware store work very well. Very thin layer of model glue on the leaf, stick it down on the bag the trace with an x-acto. I just cant get it to stop hitting the launcher stick on the way up.

video not working?

FYI, botanically speaking its called a samara.

When I slice, it has errors and doesn't show the entire wing, just the battery holder. Can you please check and re-post as necessary? I'm using slic3r that came with the 12 July 2013 release of Pronterface.

FYI, That you tube link is private, I can't watch it.

Should that be a cr2032 size battery?

This looks really cool, but I don't own SolidWorks. Would you mind generating a LED Leaf V5.STL?

How do you launch it? Also, I think that people who compete with rubber band powered airplanes make the wings by creating a frame and then poring some polymer on the surface of a bucket of water and then dipping the wing in. It creates a surface much like a bubble blower but solid. That should help with the flying time.

Thanks for the info. Will look into that process for LED LEAF PLUS. To launch the LEAF, there is a hook near the battery.

They use buterate or nitrate dope to make super thin film... for indoor rubber power planes it is fairly fragile so you would have much better luck using an iron on plastic covering or laminating film