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Whosa whatsis
Works at Deezmaker
Attends University of Autodidacticism
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Whosa whatsis

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So ya... This is amazing!  I think this is going in my list of CNC projects to do!  +Jason Smith  thanks for sharing!

Pyro Board: 2D Rubens' Tube!
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Whosa whatsis

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Maslows_hierarchy[] normally looks like this:

{Physiological needs, Safety needs, Love and belonging, Esteem, Self-actualization}

But some days, it looks like this:

{Coding, Coding, Coding, Coding, Coding}

My guess is that there's a buffer overflow vulnerability that allows it to be overwritten this way.
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Why hasn't anybody made a small motor controller to that uses an encoder and takes step/dir signals in a format compatible with a pololu driver so that we can use servos as drop-in replacements for steppers on printers yet? I would think there should be chips designed to do this, but even if it requires a microcontroller and a separate H-bridge, it shouldn't be difficult...
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Brad Hopper's profile photoKevin LaSanders's profile photoMike Creuzer's profile photoOla Sikström's profile photo
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+Whosa whatsis Sorry for going on about shaft encoders but I really think they may be useful. A geared dc motor with encoder will cost roughly the same as a stepper, but will be stronger and way lighter (probably closer to 20-50 g, while a stepper often is 200+ g). The most obvious place for this is of course the extruder.

Linear encoders for the axes sounds like a good idea anyway.

Where you actually put the encoder shouldn't really matter though (implementation-wise), so wether you use a linear- or a rotary en coder, you could still use the same driver hardware.

As for the hardware, I'm confident this can be implemented with a cheap ATtiny and an H-bridge driver chip, on the same footprint as an A4988.
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A couple of interesting ideas here. Looks more like a CNC mill's toolpath than a printer's. Shallow-angled nozzles need not apply.
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Camerin hahn's profile photoScott Leighton's profile photoWes Brown's profile photoNick Parker's profile photo
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+paul mplr that's where I've been looking with all this. Arbitrary layer shape should allow you to mitigate layer interface weaknesses in an appropriate way for your application.

Also, for ninjaflex and similar, you could manipulate flexibility with layer shape.
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Something like this might make a good Z probe, able to detect an aluminum heat spreader on the platform.
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Whosa whatsis

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Shut up and tell me where to submit my application.
What if there were a loose body of makers, with some recognizable name and "seal of non-disapproval," who take it upon themselves to vet all of the new hardware offerings posted to crowdfunding sit...
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Kenneth Cummings's profile photoMike Zierke's profile photoArthur Wolf's profile photoDoug Rector's profile photo
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PT Barnum lives!
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I still want to see patents abolished, but this is the next best thing.
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Billy Zelsnack's profile photoWhosa whatsis's profile photoCamerin hahn's profile photoStephen Baird's profile photo
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+Billy Zelsnack that doesn't work... they attack both other lawyers and innocent people and bring nothing to the market
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Oh, tiny microcontroller dev boards that I already have too many of and will probably never get around to using, I wish I knew how to quit you.
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I got "onboard" this one also.
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The skanbot fits in my tiny car without disassembly, and it will fit even more easily once I get the new, more compact turntable mechanism working. This one is from an old project and is bigger than it needs to be.
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Whosa whatsis

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Another printer resulting from the race to the bottom.

I saw early shots of this that looked like it was an H-bot, but this one appears to have a rack-and-pinion X axis. Y has loops of belt that I'm guessing are driven by spinning the four Z-axis smooth rods, which would in run need to be D-shaped or have slots milled in them to allow pulleys to turn with them while still sliding vertically, similar to this concept for an off-carriage extruder motor: http://garyhodgson.com/reprap/2012/01/experimental-off-carriage-extruder-motor/

Of course, for the pulleys to be loose enough to slide freely, I suspect that a bit of backlash in these pulleys will be impossible to avoid.
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Andreas Thorn's profile photolinco matic's profile photoArthur Wolf's profile photoJohn Driggers's profile photo
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They claim to have their own custom idiot proof software. Yet, their video shows Pronterface running in at least 2 shots
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Have him in circles
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  • Deezmaker
    2012 - present
Basic Information
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Male
Story
Tagline
Polymathic autodidact
Introduction
On a good day, I'm an iconoclastic, autodidactic polymath. The rest of the time I'm just a cynical, dilettantish tinkerer.

Also, I make stuff.
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Designer of Reprap Wallace
Education
  • University of Autodidacticism
    present
  • Internet School of All Human Knowledge
    present
Whosa whatsis's +1's are the things they like, agree with, or want to recommend.
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groups.google.com

Re: [MakerBot] Hot end mod. It's kinda hard to see, here's an illustration and a better photo. The cuts start around 12mm away from the thre

Google Drive
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Access everywhere. Google Drive is everywhere you are—on the web, in your home, at the office and on the go. So wherever you are, your stuff

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Pleasant Software for the Macintosh - Podcasting solution, iChat enhancement and more

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[edit] Classification. According to the composition of their main chain, polyimides can be: Aliphatic (linear polyimides),; Semi-aromatic,;

RepRap Wallace by whosawhatsis - Thingiverse
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Thingiverse is a universe of things. Download our files and build them with your lasercutter, 3D printer, or CNC.

Acrylonitrile butadiene styrene - Wikipedia, the free encyclopedia
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Acrylonitrile butadiene styrene (ABS) (chemical formula (C8H8)x· (C4H6)y·(C3H3N)z) is a common thermoplastic. Its glass transition temperatu

Printable solar cells that can be folded up when not in use - Hack a Day
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Here's a photovoltaic cell that can be printed onto paper. The manufacturing technique is almost as simple as using an inkjet printer. The s

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For many maker pros, finding the right amount of space can be difficult. One makerspace, Artisan's Asylum, is offering a different model.

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A new player on the field by the name of Tangibot recently arrived, not with a new printer or even an innovative new derivative, but with a

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Filament Tolerances is a subject that doesn't get much discussion, yet is arguably the most important quality to look for when choosing a pl

Android Terminal Emulator
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Access your Android's built-in Linux command line shell. Unleash your inner geek! Want to know more? Check out the wiki: http://github.com

StepStuck
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When I built my Mendel I used A3977 stepper drivers. Before that I did some maths to show that the component values need to be carefully sel

How to view open Android Chrome Beta tabs in Chrome desktop
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Trying to view open tabs from an Android device in the desktop client didn't seem possible, but a savvy Twitter follower saves the day. Read

Pololu - Stepper Motor: Bipolar, 200 Steps/Rev, 35x36mm, 2.7V, 1000mA
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This hybrid bipolar stepping motor has a 1.8° step angle (200 steps/revolution). Each phase draws 1000 mA at 2.7 V, allowing for a holding t