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Shannon ST42 LCR Tweezer Test and Comparison Thread

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KungFuJosh:

--- Quote from: mawyatt on July 14, 2024, 02:28:34 pm ---@ Josh,

Recall you had issues with some range(s) and/or frequency(s) after the "Enhancement"?

Need to go to that thread if I can find it wrt the issues.

--- End quote ---

Everything was resolved eventually with some firmware updates. Which was funny. TH told ST that they already had the latest fw. So I sent ST photos of another EEVblogger's newer firmware version. That helped ST get better fw from TH, and everything has been great since then. Our antics helped ST out pretty well I'd say. 😉

You can see my test attached to this post: https://www.eevblog.com/forum/testgear/shannon-st42-lcr-tweezer-test-and-comparison-thread/msg5561319/#msg5561319

The attached PDF in that post has the full results, and everything looked good. The only issue with the comparison was, as you pointed out, my test voltages weren't matched. That's why I switched the ST2832 to 350mVrms after to get closer to the 1Vpp of the ST42. Overall, matching was really good anyway except for those few spots where the testing voltage really mattered.

That PDF has my version of all the cal testing that was done on Martin's ST2830.

Thanks,
Josh

ETA:
Here's the LCR thread: https://www.eevblog.com/forum/testgear/th2830-vs-th2832/
This thread is relevant too: https://www.eevblog.com/forum/testgear/lcr-cal-test-pcb/

KungFuJosh:

--- Quote from: Martin72 on July 13, 2024, 08:53:48 pm ---1.5.5. from May2024

--- End quote ---

I ran the OTA update again, and now I have 1.5.6. Shows Cp/Cs now. Sweeet.

Martin72:

--- Quote ---I ran the OTA update again, and now I have 1.5.6.
--- End quote ---


Where do you get it from?

KungFuJosh:

--- Quote from: Martin72 on July 14, 2024, 04:11:30 pm ---
--- Quote ---I ran the OTA update again, and now I have 1.5.6.
--- End quote ---


Where do you get it from?

--- End quote ---

This page: https://shannontweezers.top/docs/upgrading-firmware/

Has this link: https://github.com/shannontweezers/shannontweezers.github.io/releases/download/2023-5-10/fw-update-2023-5-10.zip

Download and run from a terminal prompt. You do updatername.exe com5 or whatever your com port is. I renamed the updater fwu.exe cause I don't like typing extra BS.

To get into update mode, you leave the ST42 off, then push the joystick one direction (up or down, I forget which) then plug in the USB cable and it should enter the update mode. If it starts up and shows you charging info, it didn't work.

unmaker:
I was wondering why the latest firmware on Shannon's page is 1.5.3. Are there firmware release notes for the later firmwares?

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