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Mostly Printed CNC nears completion
I haven’t taken many progress photos of the MPCNC because the build matches the assembly guide so well. It is MUCH better designed than the Prusa i3 design I fought with. One difference from the stock...
View ArticleMostly Printed CNC: They see me
http://discspace.org/wp-content/uploads/2016/07/2016-07-04-23.04.02.mp4
View ArticleMostly Printed CNC: Plotting
If you like clumsily drawn squares, you will like this video. http://discspace.org/wp-content/uploads/2016/07/2016-07-05-02.50.54b.mp4
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Mostly Printed CNC: IT WORKS
I strapped an incredibly crappy Harbor Freight Cutoff Tool to the MPCNC (related posts) thanks to this mount, and I was actually able to mill something! It worked! I crudly cut the hand-drawn letters...
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MPCNC: Custom mods and part of a dickbutt
I’ve posted two custom parts for the MPCNC: a wire harness and a customizable end-stop holder. This test model works as well in 2D as it does in 3D! I tried a test run of the Optimal Fabrication Test...
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MPCNC: A relay-switched outlet box
On Thingiverse I’ve posted a model and schematic for a relay-switched outlet box. This will let you switch an outlet on/off with an Arduino pin. That’s nothing new, but it’s a box that puts all the...
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MPCNC: it drew this
The MPCNC with my rudimentary pen holder was able to draw this. I need to add some kind of spring downforce on the pen to deal with small differences in depth (which is why the lower left is faded)....
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MPCNC: new pen holder and trochoidal milling
I improved the Z coupling, made a much better pen holder, and discovered trochoidal milling, which, in addition to making actual milling easier, draws cool pictures if used with a pen. The pen holder...
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MPCNC: Lumber ID
If you’re like me, you live in constant fear of criminals breaking into your backyard shed and stealing your valuble scrap pieces of 2×4. Well, worry no longer: Now you can protect your lumber scraps...
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MPCNC: Adding threaded hold-down holes
To easily hold stuff in place on the MPCNC, I used OpenSCAD to script it to drill a grid of 9mm holes in the bed, then I installed 1/4-20 threaded inserts into them. This lets me tighten down simple...
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MPCNC: Portable and Wifi-enabled
I’ve come to realize that I can’t run the MPCNC in my office — it just kicks out too much dust. I could add a vacuum, but I bet there’d still be a bunch kicked off. Therefore, I’ve modified the machine...
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Asinine “Cordless Broom” restored
A few years ago I got this ridiculous thing from a thrift store: the Black and Decker “Cordless Broom” (differentiated from regular brooms, which I guess somehow have cords???). It’s basically a really...
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LaTeX: still shameful
If you’re wondering if the LaTeX document typesetting system is still a horrendous mess, here’s a fact: when updating my LaTeX stack, the updater spent the vast majority of the 10-minute process on...
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Cheap 3D pen actually works
I’m shocked to say this, but the cheap $20 knockoff “3D pens” from China actually work, at least as well as you’d expect such a thing to work. These pens are basically little 3D printer heads in pen...
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An Ocean-diving Rocket Pod Control System
Sorry I haven’t posted more. I have done some cool projects, but finding time to post has been hard. To help fill that gap, here’s a report I wrote up detailed a small chapter in my involvement with...
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A low-power, low-performance single-disk NAS for backup
I do in-house backups for my data, but the system that eats the data now is an all-in-one Intel Atom PC with a dying fan, and I don’t really trust it. Luckily we’re in the future, so fanless ARM-based...
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More abstract images
I did some experiments with graphics, and what I was trying to do didn’t really work, but I made some neat wallpapers as a side-effect. All but the first are 3840×2160 (4k).
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Yet more abstract images
I had some new ideas on generating pictures based on Z-order curves. For speed this time, I wrote some truly horrific but decently fast C code to render stuff. I also re-did some of my earlier Hibert...
View ArticleUpdate to my little garbage robot
Now with a cereal box taped to it. And a servo. For entry into the TerrorBytes MiniFRC 2018 competition. For phone app, I switched to “Joystick BT Commander”. Arduino code is here:...
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