CozmicRay Wally Build

Re: CozmicRay Wally Build

Postby Nicholas Seward » Tue Jan 07, 2014 3:17 am

Oh, and there is a setting in repetier's firmware and probably in marlin too that will keep the steppers from turning off after so long.
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Re: CozmicRay Wally Build

Postby Cozmicray » Tue Jan 07, 2014 7:38 pm

Nicholas Seward wrote:What do you mean R-H?

I don't use marlin so no dice there.

It sounds like you have movement and have set the steps/mm. What are you trying to do that you can't do? I am just not following.


R-H = Repetier-Host (software on PC to run printer)
What software do you use?
What firmware do you use? ( I think azteeg is an arduino based board?)

Yes the default units in Marlin and R-H are mm x-y-z system.
What should the limits be? What units?
The bed may be physically 200mm x 200mm
but in the polar commands it maybe 6000 x 6000 units

I found the setting in configadv.h to set time out on motor.

R-H has printer settings for size of printer volume
where home is
how home is defined z min, max, 0
If z=0 is table down then printing must start at z=~140 and move down from there
is this a -Z move or a +Z move?
What is positive z move --- clockwise or counterclockwise looking at motor

X and Y is a positive move on X clockwise or counterclockwise from top?
is a positive move on Y clockwise or counterclockwise from top?

How do I set the table up -- move to three positions to level table?

Are these "no Brainers" for beta builders?

Thanks for all the help

:D
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Re: CozmicRay Wally Build

Postby Nicholas Seward » Fri Jan 10, 2014 5:34 am

Sorry. I have not forgotten you. I am just trying to find the time to get you good info together. I have lost my configuration.h for my wally repetier firmware. I could guess at how it is all setup but I would prefer to reinstall it and verify that I am telling you only things that are true. I also want to make a video of me going through the setup and a first print. I assume this will be tons more valuable than many forum post. Thanks for your patience. I hope to get this done this weekend. I was hoping to get this done last weekend but getting GUS to print something that is 200mm wid was my first project and I just accomplished that tonight so nothing is blocking work on Wally this weekend.
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Re: CozmicRay Wally Build

Postby Cozmicray » Sun Jan 12, 2014 11:46 pm

Z-Axis pulley bracket on Wally Chrome
probably should be longer?

Table mounted out to clear bolts on arms

CR_Z-Pulley.jpg
Z-Pulley_Bracket too short?
CR_Z-Pulley.jpg (20.02 KiB) Viewed 22049 times
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Re: CozmicRay Wally Build

Postby Nicholas Seward » Mon Jan 13, 2014 2:00 am

On the design that is in my github the pulley is always breaking the back plane of the back board by at least a few millimeters.
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Re: CozmicRay Wally Build done?

Postby Cozmicray » Sun Jan 19, 2014 4:27 am

Wally Chrome done? but not fully working?

5 ply birchply painted chrome
Arduino mega 2560 and RAMPS 1.4
Hard PC bed heater and glass surface
J-Head hotend 1.75mm Airtripper extruder
white PVC extender to make it as long as Ubis
Repertier Firmware Repetier-Host SW on XP 64 PC

Only goes up 133mm Z-pulley and extruder limit
Have NOT got firmware / software parameters set up right yet
Loses knowledge of home and doesn't go all over table
Python -- errors out with 133 height

Wally_Chrome_F.jpg
Wally Chrome Front
Wally_Chrome_F.jpg (20.78 KiB) Viewed 21993 times


Wally_Chrome_B.jpg
Wally Chrome Back
Wally_Chrome_B.jpg (23.45 KiB) Viewed 21993 times


Waiting for help to catch up

:?:
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Re: CozmicRay Wally Build

Postby Cozmicray » Sun Jan 19, 2014 8:26 pm

Wally Chrome moves

0.5mm-thin-wall.stl
Slic3r with Slic3r wally ini
Python segmentize with height set to 130
gcode loaded to Repitier-Host and run

Smashed hard on glass compressing springs -- didn't start squirtin until 125.60mm Z

Red printed by Wally
Blue what it is suppose to be

Wally_works_1-19-14.jpg
Wally doing .5mm thin wall cube
Wally_works_1-19-14.jpg (44.04 KiB) Viewed 21980 times


scratch scratch scratch
:?:
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Re: CozmicRay Wally Build

Postby see3d » Sun Jan 19, 2014 8:45 pm

Congrats on making it make something. Looks better than some of the first efforts I have seen this year on the deltas. ;)
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Re: CozmicRay Wally Build

Postby Cozmicray » Mon Jan 20, 2014 11:40 pm

Another day sumo wrestling with Wally Chrome

Problems with extruder tube fitting popping out of extruder
bad threads!

Calibration of Z with digital depth gauge. Really shows difference in Z over the arc.
It doesn't have a long enough travel to measure entire z travel (30mm stroke on gage)

I used a 100mm x 100mm calibration square stl.
Sliced it with newest Slic3r with Slic3r Wally ini -- only change --- 1.75 mm filiment

The generated gcode file run thru Python segmentize code
with height of 126mm

Start arms out to stops and bed at 0

Table came up to 124.9 and X,Y a little behind center of my bed
Then rose the bed some more to compress the springs
then scooted off bed then back a couple of times until I killed it
when it went off bed I had to compress bed to help extruder tip get back on.

I got something wrong here in setup or setup parameters
in Repitier firmware or R-H setup or Python conversion.

Any special settings I am missing?

Thanks
:?:
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Re: CozmicRay Wally Build

Postby Nicholas Seward » Tue Jan 21, 2014 12:00 am

I am rewriting the software tonight. Once I get a good print with the new setup, I plan on making an instructional video.

Important notes: I got a 12" caliper that I am going to use to make a lookup table to relate the machine coordinates with real coordinates for the bed height. I was originally going to use a bunch of nasty trig but that would be too easy to get wrong and this new way will apply to any z configuration. BTW, I will use a curve fit algorithm so if all you have is a ruler you should be able to get pretty decent results. I just happen to have the caliper for GUS's arms.

Thanks for holding in there. We will get your Wally up in running. Right now you are just faster than I am.
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