Search found 51 matches
- Sat Nov 11, 2017 11:54 am
- Forum: Macro and Micro Technique and Technical Discussions
- Topic: DIY Inkjet Servo Macro Rail
- Replies: 5
- Views: 2081
Thanks Mike, I should have mentioned in the OP, one of my goals for this project was to see how much of the inkjet printer I could reuse. I was also simply curious as to how accurate it could be. Clearly, the printer makers in this case hp, get very high precision -- this drive train feeds the paper...
- Sat Nov 11, 2017 12:10 am
- Forum: Macro and Micro Technique and Technical Discussions
- Topic: DIY Inkjet Servo Macro Rail
- Replies: 5
- Views: 2081
Rik, Here is the graph: http://www.photomacrography.net/forum/userpix/1213_1000_7ms_12v_C1C2_D1_N8__Scatter_1.png This was from a test run - I wanted to establish a baseline to compare with possible improvements. The run was 1000 sequential steps resulting from activating the motor for 7 ms with a 1...
- Fri Nov 10, 2017 5:03 pm
- Forum: Macro and Micro Technique and Technical Discussions
- Topic: DIY Inkjet Servo Macro Rail
- Replies: 5
- Views: 2081
DIY Inkjet Servo Macro Rail
I've been experimenting with a homemade stacking rail using parts from a discarded InkJet printer. These cheap printers use servo motors with encoders rather than stepping motors, so I wasn't sure what kind of precision could be achieved. At any rate, I got it working, and the results were acceptabl...
- Mon Oct 02, 2017 1:15 pm
- Forum: Equipment Discussions
- Topic: Triggering Astrophotography cams via Stackshot/WeMacro?
- Replies: 6
- Views: 1066
It would be helpful to know more about how this unusual camera needs to be triggered. The canon digital camera I am familiar with uses weak pull-up on the shutter signal line which is triggered by connecting to low (gnd), also provided by the camera. This allows any simple switch mechanism to work, ...
- Sun Aug 20, 2017 7:48 am
- Forum: Macro and Micro Technique and Technical Discussions
- Topic: CombineZP is available again
- Replies: 19
- Views: 6532
I'm not aware of it having been updated either. There's a 'last' version, as in last version ever put out, that's the one I'm hosting. This is my understanding as well, the sha256sum (ec88a0328b4dc0bc4d4a8e3923007bb567746c357f42908fabd0bdd05f26b3f2) is identical for the current CombineZP.msi file a...
- Sat Aug 19, 2017 8:25 pm
- Forum: Macro and Micro Technique and Technical Discussions
- Topic: CombineZP is available again
- Replies: 19
- Views: 6532
It seems to work quite well in the Wine environment under Linux. I downloaded and ran it under the current release of Wine for Fedora 26. The installer ran without error. On loading, the windows overlapped and needed moved around, but I was able to run an alignment and several stack methods and save...
- Wed Oct 05, 2016 4:47 pm
- Forum: Equipment Discussions
- Topic: LED driver
- Replies: 24
- Views: 5142
You don't quite get a log pot, but you can bend the curve a bit with a parallel resistor as descibed here: http://www.geofex.com/article_folders/p ... tscret.htm
I've used that technique on an LED controller and it improved the response.
I've used that technique on an LED controller and it improved the response.
- Tue Jul 05, 2016 6:22 am
- Forum: Equipment Discussions
- Topic: Driving LEDs. Help needed
- Replies: 11
- Views: 2731
Hey, this may be more complicated than you were expecting :( It looks like the PWM dimmer you have does switch the full load. This could be a problem for connecting a constant current regulator down stream (in series) since the CC regulator may not like being fed a PWM power source. It may work fine...
- Mon Jul 04, 2016 6:49 am
- Forum: Equipment Discussions
- Topic: Driving LEDs. Help needed
- Replies: 11
- Views: 2731
- Sat Mar 12, 2016 9:21 am
- Forum: Macro and Micro Technique and Technical Discussions
- Topic: macro-rail, micro-processor, nano-steps
- Replies: 83
- Views: 74981
The xoffset graph several posts above struck me in it's similarity to graph 5.1 at this link: http://homepage.cs.uiowa.edu/~jones/step/micro.html . I wonder if what you are seeing could be the "detent effect" discussed there in relation to the non-ideal behavior of stepping motors when using sine-co...
- Tue Feb 03, 2015 8:14 pm
- Forum: Equipment Discussions
- Topic: How can I harvest and adapt a focus block?
- Replies: 22
- Views: 10130
I harvested a nice focus block from an old Zeiss Invertoscope over in this thread: Homebrew Stacking Controller . The machining was done with basic woodshop tools and hand tools. The post and pictures probably descibe the process better than I could in-line here. I just disassembled the block comple...
- Wed Jan 07, 2015 3:15 pm
- Forum: Photography Through the Microscope
- Topic: What is this ? Solution of the riddle
- Replies: 22
- Views: 2707
- Mon Dec 22, 2014 2:12 pm
- Forum: Macro and Micro Technique and Technical Discussions
- Topic: Homebrew Stacking Controller
- Replies: 18
- Views: 9325
With my current set of optics limited to below 20X magnification my currrent limit of 3um per step is more than enough resolution in full stepping mode. The smallest slices I've used so far are 4 whole steps (about 12 um). One of the primary reasons to go to 1/2 stepping (aside from movement resolut...
- Tue Dec 16, 2014 10:25 pm
- Forum: Macro and Micro Technique and Technical Discussions
- Topic: Homebrew Stacking Controller
- Replies: 18
- Views: 9325
Thanks for all the comments folks. I'm still working on getting stuff posted here. The project is currently functioning for my purposes so I'm mostly working on packaging and waiting for some connectors to arrive. I have thought of trying to make a video at some point, but my best camera for video h...
- Sun Dec 14, 2014 12:49 am
- Forum: Technical and Studio Photography -- Macro and Close-up
- Topic: Small Electronics
- Replies: 2
- Views: 2068
Small Electronics
A couple of test shots with the new stacking controller I'm working on. Some electronics bits that have seen better days. http://www.photomacrography.net/forum/userpix/1213_ChiptTest6_10X_8s_78f_small_1_640_1.jpg The chip from a classic 74H00 quad NAND gate ceramic DIP package that broke open. Full ...