The stroboscopic patterns are designed in MATLAB and drawn by EggBot Pro on colored glass Christmas ornaments. Motion of the balls is controlled by custom mechanism built using components from two Prusa i3 MK3 3D printers, like six stepper motors and two Rambo boards. On top of designing the patterns, which is Jiri’s hobby (when he is not busy with research) and building the whole contraption in a very short time, the team had to deal with issues including non-spherical ornaments, or how to use Rambo board to precisely control the velocity profiles.
We love to see how people make things, and Jiri did not disappoint, sharing process photos of making the rotation mechanisms.
With great help from his colleagues Martin, Krištof, and Filip they took Christmas ornaments to the next level and taught them to dance!
The final setup shot captures how they created such a beautiful video.
Merry Christmas to Jiri and the Advanced Algorithms for Control and Communications group! Thank you for sharing your project!
Last year before Halloween, Evan used an AxiDraw hidden in a box to animate a ouija board. He also posted a progress video from before adding the LEDs and doing the lettering and finishing. It turned out beautifully!
I will be at Science Hack Day SF giving a lightning talk on Creative Off-Label Tool Use featuring some of the cool and unusual ways people are using AxiDraw and other tools we make. I’ll also have an AxiDraw in the hardware hacking area to play with.
Science Hack Day is October 27-28 and is free, so register now!
P.S. If you’re doing something interesting and science or research related with your AxiDraw, please let me know!
Joanie LeMercier has been working on a project using invisible ink and different lighting schemes with the AxiDraw. He has posted a bunch of clips and pictures in his twitter stream with the heading “Invisible drawing.”
Like the AxiDraw V3/A3, the AxiDraw SE/A3 has an XY travel suitable for use paper up to 11×17″/A3 size. However, in place of the central extrusion that makes up the body of that machine, the AxiDraw SE/A3 has a central beam that is CNC machined from a solid billet of 6061-T6 aluminum, and then anodized to a sleek black finish.
This heavy, rigid structure — it’s a solid block of metal! — provides dramatically better straightness and stiffness, even compared to the already-stiff AxiDraw V3/A3. This design adds mass exactly where you want it: to the non-moving base that forms the X-axis of the machine. In order to keep the weight light where it matters, the moving Y-axis of the AxiDraw SE/A3 uses the same stiff and light custom aluminum extrusion that we use on the AxiDraw V3/A3.
We made a video showing off the SE/A3, and how it’s made:
Matt published an Axidraw vinyl/paper cutter project on hackaday.io. He made a longer barrel for a vinyl cutter blade holder to fix it in his AxiDraw V3/A3 pen holder, and notes the settings he used for successful cutting of cardstock, vinyl, and other materials.
Head over to his Matt published an project page for more details!