Experiment to change the back and forth arc motion of a hobby servo into a stepped circular motion.

See the video here:

flickr.com/photos/spikenzie/3291883934/in/photostream

After seeing some kids playing with a little air plane powered by compressed air from a soda bottle, I decided to see if I could make a laser cuttable version of such a motor.

This is not a very powerful or efficient motor, but it is a fully working printable ("cuttable"?) air vane motor. My next goal will be to make a full printable bottle-powered park-flyer.

A video of the motor in action: youtube.com/watch?v=reaB0R9ALHs

More on air vane motors:
hydraulicspneumatics.com/200/TechZone/FluidPowerAcces/Article/True/6422/TechZone-FluidPowerAcces

Matt made a version for 3D printers. You can find it here: thingiverse.com/thing:620

This is an acrylic laser business card that assembles into a functional set of acrylic metric/imperial callipers, with a vernier scale accurate down to 1/20th of a mm***. Due to the size constraints of the business cards, I didn't have much room left for instructions on the card. I plan on making some screened envelopes with a 3d blowapart rendering of the unit assembly.

This file still needs some polish, but is fully functional. I was hoping to work on it a little longer before releasing it, but came across thingiverse.com/thing:782 the other day, and figured it was about time to stop trolling and register :)

Please excuse the temporary cameraphone snaps, the good camera is at a cottage for a few more days :)

----------------
UPDATE

Caliper.006 - cut files set to work with a VLS 3.60 60W

Caliper.007 - cut files adjusted to slightly looser on the friction fit.






*** depends on the accuracy of your laser cutter ;)

This is my first cut of a 3D turntable scanner that can be printed on a cupcake/reprap. It is by no means finished but it is a start.

It has a turntable driven by a motor ( a size I had in my 'bits' box ) and mounts for a camera and the laser line drawer.

It needs heaps more work but I thought I'd put the first cut into the thingiverse and see what people came up with

The blender file of the complete device is included in the tar gzip file. I have not uploaded all the stl files individually , grab the zip if you want them all.

To build it you will need a 608 bearing , 5mm (or 3/8 ) rod , some M4-20 bolts , a motor , webcam , laser pointer and possibly a PHD in quantum physics :P

There is no software yet but this

sjbaker.org/wiki/index.php?title=A_Simple_3D_Scanner

looks like a good start; combined with an arduino to index the wheel and some scripting this could be a automatic scanner.

A small desk clamp.

Works but it requires a little more super glue than I would have liked.

It was designed to be a PCB holder (the one Lady Ada uses in her instructions was the inspiration).

ladyada.net/images/usbtinyisp/tools.jpg

The base is too small making it unstable.

However I just finished printing it and it works!

To make it you will also need.

3/8 (5mm will do as well) threaded rod and some square nuts.
Square brass tubing ( 3.9 mm ) and the size that fits just inside that.

Needs some more work:

Bigger base , maybe multipart
Better way to hold the clamps

The tar file contains the blend , photos and all the stl files.

A plastic paperclip, simple and clean. You can also substract or add a word (like a short name) or logo at the middle part for a more personal clip.