Design a New Precision LCR Tweezers with Much Lower Cost 【Shannon Tweezers ST42】

[fubgumfaw]

Sorry...new to this thread and too lazy to read through it...

ARE these for sale somewhere? I've been looking at this sort of product for a while now and deliberately held off.

[voltsandjolts]

no, not yet, please join the queue

[fubgumfaw]

no, not yet, please join the queue

I've looked and looked at LCR tweezers and the good ones are expensive and the cheap ones are garbage and not much in between.
Queueing...

[Zlotnik]

Oh, the Mastech MS8911 aren't half bad and won't cost an arm and a leg. Although they do seem to be in short supply these days.

But I'm also queueing... if Shannon and company take up the input we've given here and pull off the performance and price they target, this will be one nice set of LCR tweezers. The hold feature alone cold be worth it, and the accuracy can come in handy as well.

BTW: @Shannon, any updates?

[fubgumfaw]

Oh, the Mastech MS8911 aren't half bad and won't cost an arm and a leg. Although they do seem to be in short supply these days.

But I'm also queueing... if Shannon and company take up the input we've given here and pull off the performance and price they target, this will be one nice set of LCR tweezers. The hold feature alone cold be worth it, and the accuracy can come in handy as well.

BTW: @Shannon, any updates?

These LCR tweezers look promising. I think I'll hold off til they become available. I have a Hantek bench LCR meter it does most things I need. LCR tweezers have a really nice use case that puts it all in your hands in a compact form factor.

There is supposedly a kickstarter campaign for them, but I failed to find it. Any ideas?

[Zlotnik]

As far as I know there is no Kickstarter yet, or anything else beyond this thread.

The queuing is all metaphoric, not pre-orders or anything. So yes, I (and probably all of us here) hold back till the tweezers materialise and Shannon et al. can show what they've accomplished. I was merely expressing that LCR tweezers with the features I and others outlined in this thread, and the quality, accuracy and price Shannon aims for, would be something I could find attractive enough to get in addition to my MS8911.

[SilverSolder]

The MS8911 is a good effort by Mastech and worth having.  It will likely fetch a good used price on eBay too, as its reputation grows, if you ever want to replace it in future.

[Shannon]

hello fubgumfaw,
very thanks for your interest.

After we got some feedback and great ideas, we focus on polishing these LCR tweezers again, and sorry about much late reply.

Some guys have concerns about the stability and production quality, so we are trying to collect much more test results to show its advantages.
we are doing temperature cycle tests for these tweezers, and it shows awesome stability, we are designing a serious product, not just a DIY suite.

on the other side, we have engaged with a mold company, the professional ABS enclosure is under manufacturing.

[Shannon]

To be honest, the reputation spread slowly than we expected at this stage, as tautech said, one point is people care about the products, not only a prototype or demo, so we decide to calm down to polishing this design and pay much more attention to make it real with wonderful performance first.

If you have some other ideas, please let me know. such as if you want to get the tweezers earlier, to be the early bird than Kickstarter's early bird without pre-pay, and we definitely will offer a discount, even though we still don't know how to make this deal come true, maybe eBay is a choice?

Temperature stability performance is coming soon. 

[tautech]

If you have some other ideas, please let me know. such as if you want to get the tweezers earlier, to be the early bird than Kickstarter's early bird without pre-pay, and we definitely will offer a discount, even though we still don't know how to make this deal come true, maybe eBay is a choice?

Why not just here on the forum and the KS platform to start with ?
For sure you need the initial investment before you can even think about going global.

You can edit the thread name and post #1 to add links to the KS and/or some sales website or add the website to your profile.
When deep in a project like yours sometimes the obvious is overlooked. 

[natman69]

Great project!!! Thank you for sharing.

+1 for Kickstarter campaign

[Shannon]

haha, thanks tautech
forgive my engineer's habit, focus on those design details, and we think KS will come soon

[Shannon]

With the efforts in a period of time, we did many optimizations and conduct temperature cycles experiment for these LCR tweezers, fortunately, the test result is super good in the end, our efforts are not wasted.
The test result of the one random sample is 4ppm/℃, from 5 to 55 degrees Celsius, and the test condition is 1Vpp 10kHz excitation signal.

test results are attached.

[Shannon]

0.1Vpp excitation signal mode is ready

1kohm precision resistor and 5pf Cap test result attached, as always, super-accurate
Test video would publish later

[fkfaraz]

hello great product. i was looking for such tweezers for a long time.....

One Suggestion, can u make it available on AliExp/banggood too?
 in our part of the world we can only order form these sites only....

regards

[SilverSolder]

This is looking more and more exciting!

When plugged into a USB port on a PC, is it able to spit out the measurements over a virtual serial port or something like that?  -  this would be enormously helpful in some scenarios, and open the possibility for some cool supporting apps (e.g. text to speech voice readout,  display on a headset a la Goggle Glass, binning components with running statistics, that kind of thing).

If you use the virtual serial port method instead of some crazy proprietary scheme like most manufacturers do nowadays, people may develop their own apps for it as well - making it even more cool and a "must have" accessory!

[indman]

Del

[Shannon]

This is looking more and more exciting!

When plugged into a USB port on a PC, is it able to spit out the measurements over a virtual serial port or something like that?  -

The answer is “YES”!

Wait a moment, we will show something special

[Shannon]

One Suggestion, can u make it available on AliExp/banggood too?

The answer is “YES” as well.
If your requirements are not too hard to achieve, the answer will always be “YES”!

[fkfaraz]

then it will be a sure buy from me

[Shannon]

It’s not easy to find a standard inductor. Fortunately, the test results are as good as ever.

Attached image shows the standard 10mH inductor test result.

As indman suggested, we add the unit for the second parameter

[kripton2035]

Any idea of when this device will be available (for anyone) ? thanks.

[indman]

Del

[Free_WiFi]

It's a very nice product with ultimate fancy usb Type-C which is absolutely great !!! 
The only things i personally don't like it's the super tiny screen which instead should be the one like this on uRLC Tweezers https://oldgerman.github.io/845419ff/
and the last thing which i do really missing on a tool like this is the possibility to use the
Curve tracer for measure and compare components on circuit boards https://hackaday.io/project/16704-microcontroller-based-curve-tracer

However these tweezers it's supposed to be 4 kelvin or it's just a simple 2 wire probes?

[Shannon]

Any idea of when this device will be available (for anyone) ? thanks.

Hi kripton2035, thanks for your reply
The first batch of samples is expected to be finished in about one month, and Kickstarter will also start