www.photomacrography.net :: View topic - Automated Stack & Stitch System Robots
www.photomacrography.net Forum Index
An online community dedicated to the practices of photomacrography, close-up and macro photography, and photomicrography.
Photomacrography Front Page Amateurmicrography Front Page
Old Forums/Galleries
 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 
Automated Stack & Stitch System Robots
Goto page Previous  1, 2, 3
 
Post new topic   Reply to topic    www.photomacrography.net Forum Index -> Equipment Discussions
View previous topic :: View next topic  
Author Message
ray_parkhurst



Joined: 20 Nov 2010
Posts: 2570
Location: Santa Clara, CA, USA

PostPosted: Fri Dec 21, 2018 8:21 pm    Post subject: Reply with quote

Smokedaddy wrote:
As usual I wasn't clear in my question. For example, how do you quantify that you've actually made a 5 micron step on the rail.


Ahh, sorry for misinterpreting...

For full steps, you can pretty much count on the steps being accurate per the calculated values, within the tolerance of the motor specifications.

As long as the system is set up to drive sufficient current through the motor windings, quarter steps will also be fairly accurate.

I think Rik has developed a method for quantifying actual movements, and has published some work on this. Perhaps he'll point us to some older threads where as I remember he quantified the steps of a StackShot.
Back to top
View user's profile Send private message Visit poster's website
Smokedaddy



Joined: 07 Oct 2006
Posts: 1685
Location: Phoenix, Arizona

PostPosted: Fri Dec 21, 2018 9:06 pm    Post subject: Reply with quote

Thanks, I was wondering if some sort of mechanical device would be used like a dial indicator. Rik will have some sort of scientific mathematical way of explaining it that I won't understand so I don't want to waste his time.
Back to top
View user's profile Send private message Visit poster's website
rjlittlefield
Site Admin


Joined: 01 Aug 2006
Posts: 20659
Location: Richland, Washington State, USA

PostPosted: Fri Dec 21, 2018 10:44 pm    Post subject: Reply with quote

For ballpark $100 you can buy a manual dial indicator with 1 micron tick marks. Substantially more with an electronic interface so you don't have to manually transcribe the measurements.

Or if you already have high mag optics and Zerene Stacker, you can use the substantially more precise method described here:

"Tiny focus steps: how to make them, how to measure them", http://www.photomacrography.net/forum/viewtopic.php?t=11519

Same technique used at http://www.photomacrography.net/forum/viewtopic.php?t=27549 .

The analysis is simpler now, since Zerene Stacker can export the alignment info to a spreadsheet compatible file.

--Rik
Back to top
View user's profile Send private message Visit poster's website
mawyatt



Joined: 22 Aug 2013
Posts: 2452
Location: Clearwater

PostPosted: Sat Dec 22, 2018 9:13 am    Post subject: Reply with quote

rjlittlefield wrote:

The analysis is simpler now, since Zerene Stacker can export the alignment info to a spreadsheet compatible file.

--Rik


Rik,

Is this spreadsheet file directly available from Zerene?

Best,
_________________
Research is like a treasure hunt, you don't know where to look or what you'll find!
~Mike
Back to top
View user's profile Send private message
rjlittlefield
Site Admin


Joined: 01 Aug 2006
Posts: 20659
Location: Richland, Washington State, USA

PostPosted: Sat Dec 22, 2018 10:22 am    Post subject: Reply with quote

mawyatt wrote:
Is this spreadsheet file directly available from Zerene?

Yes, via File > Save Other > Save Registration Parameters. It's a text file with tabs as field separators.

--Rik
Back to top
View user's profile Send private message Visit poster's website
mawyatt



Joined: 22 Aug 2013
Posts: 2452
Location: Clearwater

PostPosted: Sat Dec 22, 2018 10:54 am    Post subject: Reply with quote

rjlittlefield wrote:
mawyatt wrote:
Is this spreadsheet file directly available from Zerene?

Yes, via File > Save Other > Save Registration Parameters. It's a text file with tabs as field separators.

--Rik


Great, thanks!!

Best,

Rik,

This is a really nice added feature of Zerene! Very Happy

I was able to bring the .txt file into Excel and display various graphs of X, Y, Scale and Rotation parameters! Smile

Here's an example I just got by restacking a section of a Automated XYZ S&S session with Alignments ON.



Best,
_________________
Research is like a treasure hunt, you don't know where to look or what you'll find!
~Mike
Back to top
View user's profile Send private message
rongyaokou



Joined: 20 Mar 2020
Posts: 1

PostPosted: Mon Mar 23, 2020 12:28 am    Post subject: Reply with quote

These motor is also ok:
https://www.oyostepper.com/category-7-b0-Nema-23-Stepper-Motor.html
https://www.oyostepper.com/category-4-b0-Nema-14-Stepper-Motor.html
https://www.oyostepper.com/category-22-b0-Linear-Stepper-Motor.html
Back to top
View user's profile Send private message
ray_parkhurst



Joined: 20 Nov 2010
Posts: 2570
Location: Santa Clara, CA, USA

PostPosted: Mon Mar 23, 2020 4:08 am    Post subject: Reply with quote

rongyaokou wrote:
These motor is also ok:
https://www.oyostepper.com/category-7-b0-Nema-23-Stepper-Motor.html
https://www.oyostepper.com/category-4-b0-Nema-14-Stepper-Motor.html
https://www.oyostepper.com/category-22-b0-Linear-Stepper-Motor.html


Be careful when purchasing the round types. Their screw holes are not spaced the same as the square ones and require a custom adapter.
Back to top
View user's profile Send private message Visit poster's website
Display posts from previous:   
Post new topic   Reply to topic    www.photomacrography.net Forum Index -> Equipment Discussions All times are GMT - 7 Hours
Goto page Previous  1, 2, 3
Page 3 of 3

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group