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Polar measurements with automatic turntable
Polar measurements with automatic turntable
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Old 7th October 2016, 05:16 PM   #1
ente is offline ente  Germany
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Location: NNW of Rome
Default Polar measurements with automatic turntable

Some years ago Wim published his turntable project in this forum (DIY Automated rotary table for automatic polar measurements - diyAudio).

We picked up Wim’s design goals
1) make a complete polar measurement with 1 mouse click
2) table must be strong enough to carry heavy speakers (min 50kg)
3) it must be DIY

and added some more
4) should be able to communicate with ARTA (to realize 1))
5) easy to build, even for people without electronic skills

Thanks Wim (PIC Software), Dougie (USB Controller) and last but not least Ivo (additional ARTA turntable feature with data export) the turntable project is now finished.

The turntable has passed the first test in the lab with good results (fig 1: turntable with heavy load (60Kg))

A 360° measurement with 5° resolution will last roundabout 300 seconds (inclusive export of frd-files). The accuracy and the reproducibility are sufficient. Deviation from target angle is < +/- 0.5 degrees (fig 2: reproducibility).

The concept of the turntable is very simple
(fig 3: turntable, drawing).

What is needed:The total cost of the turntable is about 250 USD.

Some more details could be found in the following papers (sorry, at the moment just in german language).

Kind Regards
Heinrich
Attached Images
File Type: jpg RAR20[1].jpg (108.5 KB, 542 views)
File Type: jpg TT09.jpg (104.9 KB, 534 views)
File Type: jpg TT02.jpg (25.7 KB, 529 views)
Attached Files
File Type: pdf AP-ARTA-AutomaticTurntable-GerRev1.3.pdf (694.0 KB, 59 views)
File Type: pdf ARTA-Hardware&Tools AutomaticTurntable-GerRev1.2.pdf (857.3 KB, 62 views)

Last edited by ente; 7th October 2016 at 05:25 PM.
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Old 9th October 2016, 02:28 PM   #2
ente is offline ente  Germany
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.. some additional pictures:

1) Turntable, small
2) ARTA turntable Menu
3) Turntable small + jig for horizontal measurement
4) Menu turntable, manual operation without ARTA
5) Menu, parameters for Operation
6) Turntable with heavy loudspeaker
7) Parts needed

More Information here: ARTA Turntable

Perfect tool in combination with VirtuixCAD: Software

Regards
Heinrich
Attached Images
File Type: jpg TT01-Pic.jpg (23.6 KB, 462 views)
File Type: jpg TT03a-ARTA_TT-Menu.jpg (41.9 KB, 458 views)
File Type: jpg TT04-HorizontalMeasurement.jpg (23.6 KB, 81 views)
File Type: jpg TT05-Wim-Menu.jpg (24.8 KB, 91 views)
File Type: jpg TT12-TT_setup.jpg (23.5 KB, 83 views)
File Type: jpg TT14_RAR-TUB.jpg (108.5 KB, 79 views)
File Type: jpg TT15-BOM.jpg (80.6 KB, 127 views)
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Old 12th October 2016, 01:19 PM   #3
weltersys is offline weltersys  United States
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Nice work, Ente!

Sure beats walking over to the speaker and moving it 5 degrees, then back to the computer 71 times...

Art
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Old 15th January 2017, 02:34 PM   #4
ente is offline ente  Germany
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Default Youtube ARTA Turntable

... here you will find some more information about the turntable:

https://www.youtube.com/watch?v=FWQudBXWUZs

Regards
Heinrich
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Old 16th October 2018, 12:32 AM   #5
kivitel is offline kivitel  United States
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This is a long shot - I'm developing my own rotating turntable for ARTA using an Arduino interface. I chose arduino because it can easily control stepper motors and other sensors needed for homing.

I was wondering if you could let me know how you got ARTA to talk to the turntable? I see that ARTA asks for an .exe for a program which drives the turntable, but how would I make a program which ARTA can use?

I am producing this turntable in the hopes that others find it useful. I am designing it to use off-the-shelf hardware, and the wooden components will be shared as 3D files enabling anyone to get them cut on a CNC.
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Old 16th October 2018, 01:27 AM   #6
4real is online now 4real  Netherlands
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This is a typical case of RTFM: http://www.artalabs.hr/download/arta-user-manual.pdf see page 23. You’ll just need to hack an executable that can communicate with your arduino to instruct the table what to do
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Old 16th October 2018, 01:33 AM   #7
kivitel is offline kivitel  United States
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4real, I have read everything on the arta website and somehow I missed that. Seems simple enough. Thank you for pointing that out.
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Old 16th October 2018, 02:16 AM   #8
4real is online now 4real  Netherlands
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It was the second hit on Google when looking for "arta turntable" Sometimes it can really be that easy
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Old 1st June 2020, 05:46 AM   #9
DaveFred is online now DaveFred  Canada
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Has anyone in NA made this ARTA turntable?

English instructions would be nice as would part number of components that can be sourced on this side of the pond.

Thank you,

David.
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Old 1st June 2020, 07:43 AM   #10
ente is offline ente  Germany
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YouTube

Regards
Heinrich
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