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INDI Library v1.9.9 Released (30 Nov 2022)

Bi-monthly INDI Library released with new drivers and bug fixes.

INDI focuser driver for Waveshare Stepper Motor HAT for Raspberry Pi / Rock Pi

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Now you've got me curious.  I have no idea what those are and assumed a simple worm gear would work in this case.  It sounds like I've got some reading to do.
1 year 8 months ago #69469

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This is a globoid worm gear with a 1:120 ratio.

www.stlfinder.com/model/another-worm-gea...-1-pWx6wsw1/1842347/

I suspect that may even be the one Andrew used. I have used it before as well with a similar design as the one Andrew posted, but as I wrote, I had difficulties taming the torque.
I have not found a gear generator yet that allows me to adjust the dimensions for different diameters and different gear ratios so I gave up on that approach and moved to my simpler, but less elegant solution. Which works perfectly, really, but is not nearly as compact as Andrew's.
Atlas Pro AZ-EQ, ASI1600MM-Pro, ASI120MM-S, ES102ED, WO-Z61, Nikon D3300, ASI-EFW, ZWO LRGB,Ha,O3,S2 filter set
1 year 8 months ago #69470

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Wow... those are really cool.  I'm with you.  Nothing less will do now that I know/understand what they are.  I did find this on thingiverse, though I have no idea how good / applicable it is here:

www.thingiverse.com/thing:2776688
1 year 8 months ago #69471

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My worm and ring gear are in fact Globoids generated with OpenSCAD. I am hesitant to share the original STL files at this time as everybody I have shown this to has encouraged me to market it. But I do encourage others to take inspiration from it. I'm honestly surprised I have not seen anyone else use this mechanism yet.
I used the following script to generate a custom set that I added features to in other 3D modeling software. www.thingiverse.com/thing:2776688
*But this is an updated version if the script that may be better.
www.thingiverse.com/thing:4197625
You will want to unhide the Customizer under the View Menu. And I had to scale down the gears it created to the right diameter.
INDI/KStars on Raspberry Pi 4, 4gb
Raspbian Buster with AstroPi3 script configuration
Skywatcher HEQ5 Pro Mount
Canon 600D Camera
Orion SSAG/ASI120mm @280mm Guide Scope
PHD2
Waveshare Stepper Motor Board - DIY Focuser
Adafruit GPS Module
Generic Bluetooth Joystick.
Startech 7 port powered USB Hub.
1 year 8 months ago #69474

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My latest creation, a NEMA17 short body stepper motor-driven autofocuser for my Explore Scientific 102. 
I prefer gears over belts, 
This design is easy to print and can be attached without any modifications to the telescope. 
The large gear fits directly on the fine focus knob and is held in place by three screws that lightly clamp it to the knob.  Rocksolid. 
 
   
Atlas Pro AZ-EQ, ASI1600MM-Pro, ASI120MM-S, ES102ED, WO-Z61, Nikon D3300, ASI-EFW, ZWO LRGB,Ha,O3,S2 filter set
Last edit: 1 year 8 months ago by Jose Corazon.
1 year 8 months ago #69611
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I have the wave share PI hat running on astroberry.  I followed all the instructions for installing it.  I see the xml file indi wmh in the usr/share/indi directory.  I can not get it to show up when I edit the ekos profile for indi devices.  Any ideas??
Second, why isn't this distributed as paart of the indi library?

Thanks Bruce
1 year 6 months ago #71169

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Check the permissions on the file.

Re why it isn't in the library, I have no idea. It's a terrific DIY solution, the driver Just Works and so does the Waveshare board. Heck, the board is cheaper than buying the parts to solder together a myFocuserPro, and you can be running 15 seconds after you open the package.
1 year 6 months ago #71170

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The xml file has the same permissions as all the other files. I really like this board as well. Getting this installed in EKOS is difficult because my linux skills are weak... Any other thoughts??
1 year 6 months ago #71173

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Restart KStars? That's about all I can think of, if the file is there, perms are OK, and it has Kevin's content, it ought to work. It's unlikely that the XML files live in a different folder, but you could try picking one of the other drivers that's in the Ekos distribution and searching for it everywhere in the file system with:

sudo find / -name name-of-file.xml

where "name-of-file" is the other driver filename, like indi_wmh_focuser.xml.

If you find the file in another place besides /usr/share/indi, you could copy indi_wmh_focuser.xml there too and see what you get. Beyond those two ideas...I got nothin', I'm afraid.
1 year 6 months ago #71182

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Hmm, well that's odd. Sorry for asking a couple silly questions, but I need to get them out of the way. Did you restart KStars after installing the Waveshare driver? Are you running KStars on the Raspberry Pi, or on another computer over the network? If it's the latter, then you'll have to install the XML file on the remote computer as well.
The following user(s) said Thank You: Jon Carleton
1 year 6 months ago #71183

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Raspberry pi 4 running astrobery os locally.  I rebooted the whole computer.  Sorry for my lack of linux skills.  

I am really looking forward to using this hat!


thanks for the replies... Bruce
1 year 6 months ago #71184

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Raspberry pi 4 running astrobery os locally.  I rebooted the whole computer.  Sorry for my lack of linux skills.  

I am really looking forward to using this hat!


thanks for the replies... Bruce
1 year 6 months ago #71185

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