Design a New Precision LCR Tweezers with Much Lower Cost(Video Attached)

[bicycleguy]

I'm still on board.

[Kean]

I'm interested.  Happy enough with Kickstarter, although I do prefer Crowd Supply (owned by Mouser).

[Shannon]

Banggood??

These are the only places we can order from. All other places like amezon, ebay dont work here
your tweezers looks so much prmoising that i have kept me and my other collegues from buying other tweezer like mastech etc. we have been waiting for it pationately...

Well, thanks for your information.

even though we are not familiar with Banggood, we learn a new platform for sale

And thanks your colleagues as well,
in your opinion, how many tweezers do you and your colleagues need?
you know the shipping cost is a headache problem for global shipment, do you mind we pack these tweezers together to ship which could save your money?

[Shannon]

"Cappy" the ghost or perhaps "Cesr" the ghost.

haha...
Come on, we are cute boys.

Most of the time, we will keep the smile, and be a gentle ghost.
But occasionally become a demon, when you use tweezers wrongly, such as measuring the cap without discharge
That would be a horrible story

[tautech]

Shannon
Would you mind giving us a run through/summary of the Calibration modes ?

[Shannon]

Shannon
Would you mind giving us a run through/summary of the Calibration modes ?

Hi tautech,
No problem.

These tweezers support three calibration modes for users, Self-Calibration, Open Calibration, and Short Calibration
when selecting the open calibration, we have to keep the two tips leave each other
and selecting the short calibration, keep the two tips short together during calibration process.
there is no restrict requirements for self-Calibration, but we always keep the two tops open, less than pico-farad is not an easy work
And the calibration process is recommended that, do Self-Calibration first, and then Open cal, and Short Cal is the lastest step

And there is a Factory Mode as well, this mode is used to clear the user's calibration information, which is used for a backup for abnormal situations.

If I didn’t make it clear, please feel free to let me know

[fkfaraz]

Thanks for the reply Shannon..

for starters i would like a couple of tweezers for myself  :box:and to show my collegues the performance..

[tautech]

Shannon
Would you mind giving us a run through/summary of the Calibration modes ?

Hi tautech,
No problem.

These tweezers support three calibration modes for users, Self-Calibration, Open Calibration, and Short Calibration
when selecting the open calibration, we have to keep the two tips leave each other
and selecting the short calibration, keep the two tips short together during calibration process.
there is no restrict requirements for self-Calibration, but we always keep the two tops open, less than pico-farad is not an easy work
And the calibration process is recommended that, do Self-Calibration first, and then Open cal, and Short Cal is the lastest step

And there is a Factory Mode as well, this mode is used to clear the user's calibration information, which is used for a backup for abnormal situations.

If I didn’t make it clear, please feel free to let me know

So is this for calibration to a standard/s that the user may have in their possession that maybe of higher accuracy than your factory calibration ?

[Shannon]

Shannon
Would you mind giving us a run through/summary of the Calibration modes ?

Hi tautech,
No problem.

These tweezers support three calibration modes for users, Self-Calibration, Open Calibration, and Short Calibration
when selecting the open calibration, we have to keep the two tips leave each other
and selecting the short calibration, keep the two tips short together during calibration process.
there is no restrict requirements for self-Calibration, but we always keep the two tops open, less than pico-farad is not an easy work
And the calibration process is recommended that, do Self-Calibration first, and then Open cal, and Short Cal is the lastest step

And there is a Factory Mode as well, this mode is used to clear the user's calibration information, which is used for a backup for abnormal situations.

If I didn’t make it clear, please feel free to let me know

So is this for calibration to a standard/s that the user may have in their possession that maybe of higher accuracy than your factory calibration ?

No.

In this stage, we could not support external calibration manually. you may know sometimes external calibration is easy to screw-ups the calibration data, so we treat this function with low priority.
if it's necessary, we could add an external calibration function for the ultra-high precision requirement.

[Shannon]

The unboxing Shannon Tweezers video is coming.
Forgive my poor English and video cut tech
Hope you like it.

This video content includes
1. the Container for the Tweezers
2. The ABS Case and Tips teardown
3. Accuracy Presentation
4. Hold Function and shortcut
5. Oscilloscope and Shannon Tweezers test each other

If you have any questions, please feel free to let me know.
Thanks for your suggestions and supports, we will be there.

[TheDefpom]

Do you want to send me a tweezer to review on my YouTube channel to help to get you some more publicity ?

[tautech]

Do you want to send me a tweezer to review on my YouTube channel to help to get you some more publicity ?

Gunna happen when I get some. 

[Shannon]

Do you want to send me a tweezer to review on my YouTube channel to help to get you some more publicity ?

Gunna happen when I get some. 

Hi TheDefpom and tautech,

I'm excited to know you are interested in our tweezers and willing to reviewing them, which is much helpful for promotion.
In this stage, we hope more people to know the advantage of these tweezers, which could make Shannon tweezers higher volume production.
We will send you a tweezer if we have more samples.
Thanks a lot for your support .

And could we catch you through PM in this forum or other methods?

[indman]

Del

[Shannon]

Let me know in PM if you get a chance to send me the tweezers for review! 

Welcome back, my friends.
I will PM you .

[Shannon]

The unboxing Shannon Tweezers video is coming.
Forgive my poor English and video cut tech
Hope you like it.

This video content includes
1. the Container for the Tweezers
2. The ABS Case and Tips teardown
3. Accuracy Presentation
4. Hold Function and shortcut
5. Oscilloscope and Shannon Tweezers test each other

If you have any questions, please feel free to let me know.
Thanks for your suggestions and supports, we will be there.

If you are interested, you can take a look at the video
5. Oscilloscope and Shannon Tweezers test each other
I used a 1:1 and 10:1 switching probe to test the sine wave, and at the same time, Shannon tweezers could measure the Probes' input impedance and capacitance, which has an influence on the Oscilloscope bandwidth.

My probe bandwidth is just 60MHz, so the test result is about 23pF.
for high-frequency usage, if the output impedance of the signal source is high, the test signal would be divided by the Probe input impedance apparently.

[Zlotnik]

Hi Shannon,

I plan to make the project online within a week, and then if it reaches 100 backers, it will be shipped within 1 month.
Could you use Kickstarter Plaform? Do you think it's too late for you?

If we only need to write a link to the EEVblog Forum on the Kickstarter platform, we can gather 100 reservations, and I will wake up in my dreams.

I wasn’t on the forum for a few weeks… did I miss the Kickstarter?
I’m still interested!

[Rich S]

Hello Shannon,
Great work on all of this.
I'm late to the thread, but found it fascinating that many "LCR tweezer" experts could give good feedback.
I assume this is not your Kick starter?:
https://www.kickstarter.com/projects/toney/ledtwee-v1-a-new-way-to-test-your-led?ref=discovery&term=lcr%20tweezers
;-D

I'm more of a QA expert than testing, so I was glad to see you made the contact tips replaceable.
BTW what would happen if the capacitor was not discharged? How much damage would occur?
Would your product be repairable? or would it be just too difficult/expensive and become junk?

I once forgot to do this, and blew out the input chip on a very expensive LCR bridge measurement equipment. 
Luckily I was able to repair it by replacing the common CMOS Op-amp in the front end. 

regards, RS
 

[Rich S]

Also, Shannon, if your ambitions are to sell a lot, and maybe expand into other measurement tools, then I do suggest a professional-looking videos on YouTube, etc. Find some other video that does a great job, is a great example, and follow their habits.

Have the video ready when you launch the product. 

Your product is very professional, so your marketing should be too!

If you join with a major platform like Kickstarter, they can help you with the digital marketing.

regards, RS

[Shannon]

Time flies, fortunately, we are making progress.

PS: Ignoring the different colors of the screen, we chose two screen models to compare the display effects of the two different screens

[TheDefpom]

I prefer the red screen myself, I don't tend to like blue screens as they are harder to read, the human eye doesn't deal with blue as well as other colours.

[kripton2035]

+1 for everything but blue. my eyes don't like this color for displays.

[Shannon]

+1 for everything but blue. my eyes don't like this color for displays.

Hi TheDefpom and kripton2035,

We will pay attention to this issue. Even though the actual situation is better than this.
I am a little worried that the reflection of light on the surface film of the different screens is different. I changed the light and the camera, and it looked very different.
See the attachment for the new photos.

[SilverSolder]

Blue is a terrible colour for displays - it seems to be the least "resolvable" by the eye, so unless you are young and sprightly, it is not the ideal choice.  White is probably safest...

[indman]

Del