PS:One Hadron Buildlog

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PS:One Hadron Buildlog

Postby bdring » Sun Nov 04, 2012 7:19 pm

Last Monday there was a big meeting at PS:One to talk about 3D Printers. A couple people talked about all the latest commercial printer technology, DIY ideas and what might come in the future. There were a least 30 people there including some really knowledgeable ones.

PS:One has a lot of dead RepRaps laying around and they just bought a used Replicator 1. It is getting a lot of use and they want an open source option too. They took a vote and most people wanted to build a Hadron ORD Bot and a few wanted to play with something that might also print electronic circuits.

I did not feel right selling them an ORD Bot so I donated one of my old prototypes. I want to upgrade it to some of the latest parts, so here is probably how it will be outfitted.

1. Azteeg X3 controller
2. Helios Hot Bed.
3. Dual QU-BD Extruders.
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Azteeg X3 Mounting

Postby bdring » Sun Nov 04, 2012 7:30 pm

The handle plate I had does not have an Azteeg X3 mounting pattern. As I tried to locate the contrloller on the plate, I noticed that it is a little taller than most, so it did not leave much room for clean wiring.

As part of my "it's not worth doing unless you over do it" style I decided to do a new handle plate that is a little taller. I tried a bunch of ideas, but I really liked the last idea I came up with.

The handle plate is made out of two pieces. One pices is pretty stock only about 20mm taller. The second piece is a piece of 1/2" thick HDPE with a large pocket cut into it. The top piece hides all the wiring. This should be cleaner than any other ORD Bot I have made to date.

Here are the two parts. The part on the left is the cover and has the pocket. It has a hole in it for the X3 and there are little reliefs for the wiring to route under it. The edge of the pocket has a chamfer on it to help prevent wire pinches. The chamfer has a bad reflection on the left side in the photo.

IMG_1425.JPG


The X3 mounts on spacers, so it is flush with the surface. That allows the USB, SD Card and power to easily attach. I have a few wires faked in. Hopefully the cover can easily remove without any disconnections for service and upgrades.

IMG_1426.JPG
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Re: PS:One Hadron Buildlog

Postby bdring » Sun Nov 04, 2012 7:38 pm

This handle style could also be done with a laser cutter and more layers.
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Re: PS:One Hadron Buildlog

Postby orcinus » Sun Nov 04, 2012 9:02 pm

Nice! Also solves the finger-guillotine problem of the original plate :)
Any chance you'll be making more of these?
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Re: PS:One Hadron Buildlog

Postby bdring » Sun Nov 04, 2012 9:43 pm

It is unlikely I will make them to sell. They use a lot of material and take three tool changes.

I'll see after the Bot is completely done. I need to see if it is actually practical or just a big pain.

Surprisingly, hackerspaces are filled with a lot of barely unused DIY fab equipment. I think a lot of people are scared off by the way some of them look. I want to make this look as friendly as possible.
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Re: PS:One Hadron Buildlog

Postby madmike8 » Mon Nov 05, 2012 12:08 am

I like the idea of cleaning up the look to make it more user safe/friendly. I'm looking forward to updates on your progress.

Thanks

Mike
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Azteeg X3 Reduced wiring

Postby bdring » Mon Nov 05, 2012 5:46 pm

If I do point to point wiring on a dual extruder, it is going to be a lot of wires. I was wondering if I could reduce the wires by sharing grounds and power signals. This is the parts I will have

  • (2) Stepper Motors
  • (2) Nozzle Heaters
  • (2) Thermisters
  • (1) Limit switch
  • (1) Fan (maybe 2)

20+ wires?

I don't think there is anything I can do with the stepper motors, but I should be able to share grounds and power for the other items.

  • (1) +12V
  • (1) Ground
  • (2) Thermister wires
  • (2) Heater wires
  • (1) Limit switch wire
  • (8) Stepper Motor Wires

15 wires?

I dunno...is it worth it?
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Re: PS:One Hadron Buildlog

Postby TLHarrell » Mon Nov 05, 2012 6:26 pm

I would probably not share ground between the steppers and other things like the heater. So... 16 wires?
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Re: PS:One Hadron Buildlog

Postby kbob » Mon Nov 05, 2012 7:15 pm

You could use a strip of ribbon cable for the low current wiring. Same number of conductors, less space. I am planning to use ribbon connector in the cable carriers on my 2.x laser. (It will lay flat in the cable carriers and bend easily; that won't quite work in an ORDbot's wire spring.)

The 2 piece Hadron handle looks really nice, BTW. I'm definitely doing that if/when I build one. You could also flush-mount Roy's new display/controller in the same piece.

I have visions in my head of a polished plywood carrying handle and an acrylic cover/viewport...
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Re: PS:One Hadron Buildlog

Postby bdring » Mon Nov 05, 2012 8:41 pm

I am not a fan of ribbon cables for uses like this because they are so hard to terminate.

I think I will run two springs from opposite sides. One side will be the stuff for extruder 2 and the other side will be everything else. That makes it easy to go from one extruder to two. No fancy sharing of wires.
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