PS:One Hadron Buildlog

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Azteeg X3 no shield

Postby bdring » Thu Nov 29, 2012 3:01 pm

We were working on the PS:One Hadron last night at PS:One. I realized I forgot 24V shield. There was no motor power getting to the drivers. I did this hack with the leads of a 1/4 resistor to get it going temporarily.

x3_jumpers.jpg


We actually spent a lot of the night trying to fix the broken MakerBot Replicator. It had clogged nozzles.
Bart
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Wiring Done

Postby bdring » Sun Dec 02, 2012 7:48 pm

I finished all the wiring on the PS:One Hadron. It was a lot of wiring because it uses a dual extruder. The red wires power the extruder fans. I am not quite sure of the final configuration of these.

2012-12-02_13-38-22_491.jpg


I am waiting for some extruder parts to change the gear and use an idler.



I am playing with how to slice for the dual extruder. Right now I am checking out Cura.
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Re: PS:One Hadron Buildlog

Postby regressedEE » Fri Dec 07, 2012 2:54 am

Bart, would you mind sharing the source files for the handle? I'd like to try replicating it with my Shapeoko. Thanks!
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Handle files

Postby bdring » Fri Dec 07, 2012 3:07 am

What format do you need it in. I can supply Pro/E, STEP of DXF.

I made it out of HDPE which should cut like butter on the ShapeOko.
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Handle CAD files

Postby bdring » Fri Dec 07, 2012 3:30 am

OK...here are the files in 1:1 DXF and STEP form.

I had a few thing I wish I did better. The reset button extends past the edge. I have no clearance for it so you need to sort of jog it in from the side. No big deal, but consider adding a tiny notch. I placed my board flush with the surface. That looks nice but most USB cables are thick and bump into the cover. I found only one that fit after checking a bunch. The red wires were an after thought to power the extruder fans. I did not add a cut for it.

The bosses on the back of the cover are for press in M5 threaded inserts. You could also just size the hole for a self tapping screw.

Other than that I am happy with it. It definitely is easy on the hand.

handle_issues.png
Attachments
thick_mount.zip
(103.31 KiB) Downloaded 1201 times
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Re: PS:One Hadron Buildlog

Postby regressedEE » Sat Dec 08, 2012 4:35 pm

Thanks Bart!
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Smoking

Postby bdring » Wed Dec 12, 2012 3:00 am

A little excitement.

I think the thermister sleeve insulation failed and it shorted to ground. Repetier then turned on the extruder heater full blast. I think it reached about 450C. Even the ceramic insulation was smoking. Marlin has a feature to detect this and shut everything down. I don't see that in Repetier.

The tip of the thermister was destroyed and fused to the block. It took a few hours to get everything cleaned up and running again.

I think the MakerBots have a runaway temperature cutoff switch....good idea.

2012-12-11_20-58-35_327.jpg
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Re: PS:One Hadron Buildlog

Postby bobt » Wed Dec 12, 2012 3:36 am

Yes they do and I have purchased one for each of my QU-BD heads to stop just this problem.

By the way you now have 8 less stepper drivers in the MakerSlide store. Thank A Lot.

Bob Teeter
"What Box"
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Re: Smoking

Postby orcinus » Wed Dec 12, 2012 1:59 pm

bdring wrote:Marlin has a feature to detect this and shut everything down. I don't see that in Repetier.


Actually, Repetier not only has that feature, but an additional watchdog devoted to preventing this from happening as well:

Code: Select all
//// Experimental watchdog and minimal temp
// The watchdog waits for the watchperiod in milliseconds whenever an M104 or M109 increases the target temperature
// If the temperature has not increased at the end of that period, the target temperature is set to zero. It can be reset with another M104/M109
//#define WATCHPERIOD 5000 //5 seconds

//// The minimal temperature defines the temperature below which the heater will not be enabled
#define MINTEMP 5


Edit: Although, re-reading the comments, i'm not completely sure if these two work only when changing target temperature, or all the time. If they're only active when changing it, that's not good...
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Re: PS:One Hadron Buildlog

Postby bdring » Wed Dec 12, 2012 4:44 pm

I had the MINTEMP at 5, but no WATCHPERIOD...just like the code in the last post.
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