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KickStarter: High Accuracy Programmable & Cute Resistance Substitution Box

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ledtester:
I happened to run across a similar product -- the "OhmStar" made by Labmetric:

https://www.labmetric.com/specifications

and here's a short demo video:

Ohm star RTD Promo
https://youtu.be/z8Q-UG3CGSg

An ebay listing:

https://www.ebay.com/itm/253114984571

During the video the device seems to be making bursts of clicking sounds - probably from relays.

Black Phoenix:

--- Quote from: ledtester on September 14, 2022, 09:40:39 pm ---During the video the device seems to be making bursts of clicking sounds - probably from relays.

--- End quote ---

Definitely relays:

Kean:
Just re-posting my comment I added on the Kickstarter project.

--- Quote ---I received my unit today and doing a quick manual test all seems to work well. I also got a nice calibration/test report via email.

One thing that confused me was is you can switch between different display modes which seem to work differently with value entry and it wasn't accepting my input. It is hard to read the tiny display even with my reading glasses, so using PC control might be the way to go - that is really my intended use.

At least lots of button pressing eventually got me back to an entry mode that worked. Maybe I will real the manual properly now I have it in front of me.
--- End quote ---

I got the QR101B-2M-RX model, so set points can be 1R thru 1.25M and upgraded to mostly <25ppm parts.  I've only done a very quick check against one of my HP 3478As in 2-wire mode, but when I have some spare time I will script a better (automated) scan using my 34465A or 34972A.  I may even run it using the thermal chamber.

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