3D Printed Projector | Geneva Drive

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Link to the Makers Muse project I remixed: https://www.youtube.com/watch?v=Le-PVXUCl0M

I saw a video about the Geneva Drive by Makers Muse on youtube and on Instructables but it was only used as a demonstration. The Geneva Drive holds it's position before quickly turning to the next position. I was inspired by this and I did my best to redesign and remix this 6 position Geneva Drive into a 3D printed 12 frame automatic projector!

Step 1: The Geneva Drive... Remixed

This is what the Geneva Drive looks like and what I remixed into. I had to figure out how to double the number of positions and attach a spinning wheel on top for the slides. I am not an engineer so I am happy that this works and how the final design turned out!

Step 2: Shopping List

LS-3006 Servo Motor 360 degrees

3CH Digital Multi Servo Tester

4x AA Battery Holder with 6 Inch Wired 2P Connector. (Jameco Part: 2278463)

Nebo 6272-A Micro Redline OC LED Flashlight - 360 LUX

Pendant Magnifier 5x 1 3/4"

3D print the files attached. The template image is also in the zip file.

You could make some variations. Any bright flashlight roughly the same size should work. The servo can be controlled with a mircrocontroller or components on a breadboard, but these materials listed are what I used. and if you don't have a 3D printer, search "local 3d printing service." Print at 0.2mm and no supports

Step 3: I Like to Move It Move It

The servo and batteries will connect to the servo controller. Pay attention to the wire colors, black-negative and red-positive. 3D Print the redesigned Geneva Drive and assemble the parts together as shown.

Give this a test run by plugging in the batteries and rotate the nob on the controller. The controller will make it spin forwards or backwards and the speed can be adjusted.

Step 4: The Wheels on the Drive Go Round and Round

The wheel comes in two parts. (It was easier to print it this way)

One side will friction fit into the other. Possibly print these parts slower since thin vertical part need more time and care when printing.

I created this PNG image and added pictures with a high contrast so the light and dark areas will really show up when projected. Then I took the image to a near by print center and asked to have it printed on transparency. These slides will also help wedge and hold the wheel parts together.

Step 5: Through the Looking Glass

When you turn on the flashlight, the image will be very blurry when projected on the wall. We need to focus the light. You might notice that the image is upside down.

The slide can be flipped vertically so the projected image is correct.

This 5X magnifying lens will fit in the 3D printed holder and can be positioned around until the projected image is in focus. I later tried two 5X magnifying lenses for a larger image.

Step 6: Grab the Popcorn! It's Showtime

Everything is set up, now time to make it work. Turn it on and the light will project the image on the wall and is focused by the magnifying lens. It looks better in a very dark room.

I see this as a fun and educational device and I hope you enjoyed it! Thank you so much for watching!

Remix Contest

First Prize in the
Remix Contest

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    15 Discussions

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    pcarew

    Question 27 days ago

    Nice Idea.
    What are the dimensions of the printed parts?
    I'm trying to determine if my 3DPrinter is up to the task.

    1 answer
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    3DSagepcarew

    Answer 26 days ago

    The wheel is the largest part and it is 133mm x 133mm x 39mm.

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    3DSagePenolopy Bulnick

    Reply 26 days ago

    Thank you! I'm glad you enjoyed it. I can create 3D animation in Autodesk 3Ds Max so I used that software to model the design and export it to my 3D printer.

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    uwezi

    27 days ago

    Nice project - what your project is missing but was present in the "real" projectors is a blanking of the light source during the transitions. You could probably add this feature by directly switching on/off your flashlight...

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    twhite101uwezi

    Reply 27 days ago

    Add a micro switch that the pin can close and wire this switch to the flashlight. Also moving the light back some with a square shroud to limit the light spill on to other images would be an improvement. One probable issue when you get up to speed the quick starting and stopping will more than likely shake and come apart. Great likeness to the very first projectors.

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    tisaconundrum

    27 days ago

    This is excellent! Your use of other instructables in the beginning was very resourceful. I've never seen or heard of a Geneva drive until now. Great job.

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    3DSagetisaconundrum

    Reply 27 days ago

    Thank you! I was really inspired by this device and I so glad we have modern technology to be able to convert our ideas into reality and share with other creative people.

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    3DSageMichaelL104

    Reply 27 days ago

    I put a lot of hard work and time into this so I am glad to hear your nice comment! Thank you

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    CelioS

    27 days ago on Step 2

    Missing in the part list = The Cat :-) VERY NICE PROJECT!

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    3DSageCelioS

    Reply 27 days ago

    Yes he loves the camera. The trick is keeping him out of the shot. haha :)

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    3DSageGadisha

    Reply 4 weeks ago

    Thank you for saying that! :)