Author Topic: EEVblog #81 – Smart Tweezers  (Read 10627 times)

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Offline Kiriakos-GR

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EEVblog #81 – Smart Tweezers
« on: April 25, 2010, 07:36:29 pm »
I do not know, but I did not feel "the magic" about this product,
at the point that Dave almost blame the classic DMM's with cables ,
I just think that we have to invent just for him Tweezers  with bluetooth , so to be happy and free of cables.  ;D

As about the " made in Canada " excitement ,  well the robot that did the board could be located on Canada.

But if I seriously consider, if this tool are actually useful , I will say no ..

Those tweezers could be practical , if the design was allowing to rotate the body with the display independently from the placement of the  tweezers .

So with the display always facing at you , you could check horizontal and vertical components.

Just few thoughts.   :)  

  
« Last Edit: April 25, 2010, 07:39:30 pm by Kiriakos-GR »
 

Pradipta

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Re: EEVblog #81 – Smart Tweezers
« Reply #1 on: April 27, 2010, 10:10:56 am »
Man! David L. Jones is everywhere. Fluke Plus, Gossen Metrawatt, Advance Devices and only He knows where else has 'Australian host, David L. Jones' got embedded. And so is the TI MSP430F microcontroller, like the industry standard for handheld T&MI. It would suit to find out what multimeter, if any, employ mainstream microcontroller in the Multimeter Shootout.
Not a piece of advice, but a humble suggestion Dave, you may find the 'Extended Specifications' sheet of the Fluke 87 V a standard for comparison for Multimeter Shootout a la the Fluke 87 V itself. As you 'Publish And Be Damned', it might serve you a slab for standard features and specifications.
 

Offline saturation

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Re: EEVblog #81 – Smart Tweezers
« Reply #2 on: April 27, 2010, 01:32:43 pm »
I like it.  Its very helpful as when you build SM you use tweezers anyway, the parts are so small.  Now, you have an option to ID the parts instead of burning your eyes trying to read those unreadable markings.  Complete accuracy is not used in that mode, but the parts all look alike so as you pick them, you can confirm what they are.

I prefer not built with SM because I'm not a pro EE.  But speed is everything, from design to prototype and getting the device out there and working, so I prefer something I can see easily and use my hands with, which is typically DIP and SIP sized.  But the final device is best as small and power frugal as possible, and a good case, that is MILSPEC shock and water proof, is always a plus.



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 Saturation
 

Online jimmc

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Re: EEVblog #81 – Smart Tweezers
« Reply #3 on: April 29, 2010, 09:16:43 pm »
If you want your own LCR meter then take a look at what this guy has done with a PC soundcard, a few common components and some clever software.
http://www.sillanumsoft.org/ZRLC.htm
The software even draws the vector diagrams as in Dave's tutorial. :)

Jim
 

Offline Simon

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Re: EEVblog #81 – Smart Tweezers
« Reply #4 on: May 04, 2010, 11:40:16 am »
It looks like it is great for prototyping and production with SMD
https://www.simonselectronics.co.uk/shop
Varied stock of test instruments and components including EEVblog gear and Wurth Elektronik Books.
Also, if you want to get ripped off: https://www.ebay.co.uk/usr/simons_electronics?_trksid=p2047675.l2559
 

Offline slburris

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Re: EEVblog #81 – Smart Tweezers
« Reply #5 on: May 05, 2010, 12:32:48 am »
I think their pricing is considerably out of kilter.  The tweezers
cost > $300 and for a little more money $361, I can go buy
an Agilent LCR meter, the U1732A-SMD which comes with
a tweezer accessory:

http://www.newark.com/jsp/search/productdetail.jsp?SKU=51P1540&CMP=AFC-GB100000001

Am I missing something here?

Scott
 

Offline EEVblog

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Re: EEVblog #81 – Smart Tweezers
« Reply #6 on: May 05, 2010, 01:45:44 am »
I think their pricing is considerably out of kilter.  The tweezers
cost > $300 and for a little more money $361, I can go buy
an Agilent LCR meter, the U1732A-SMD which comes with
a tweezer accessory:

http://www.newark.com/jsp/search/productdetail.jsp?SKU=51P1540&CMP=AFC-GB100000001

Am I missing something here?

Yes, the form factor.
The SmartTweezers is completely hand held without probe leads to get in the way. Also, and correct me if I'm wrong, the Agilent unit does not have an automatic LCR mode.
Those things may mean the SmartTweezers is considerably more efficient to use in a production setting.
But of course YMMV.

Dave.
 

Offline slburris

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Re: EEVblog #81 – Smart Tweezers
« Reply #7 on: May 05, 2010, 06:10:22 pm »
It looks like you are correct, the Agilent meter does not auto select
between L, C, and R.  I'm not sure if that would bug me or not.

I think if the price was closer to $199, I'd be more inclined to buy it,
but at it's current price, it's not clear to me at least if it's the right
tradeoff vs. the Agilent meter.

Scott
 

Offline EEVblog

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Re: EEVblog #81 – Smart Tweezers
« Reply #8 on: May 06, 2010, 12:53:38 am »
It looks like you are correct, the Agilent meter does not auto select
between L, C, and R.  I'm not sure if that would bug me or not.

I think if the price was closer to $199, I'd be more inclined to buy it,
but at it's current price, it's not clear to me at least if it's the right
tradeoff vs. the Agilent meter.

I've used basically identical LCR meters to the Agilent extensively in day to day work, and I must say it's pretty annoying sometimes as you always seem to have it set to the wrong mode when you go to probe something. I've sworn at it more than once!
The auto mode on SmartTweezers would save much frustration when measuring a bunch of random components on the assembly bench for example.

I guess it's similar to manual and autoranging multimeters.

Dave.
« Last Edit: May 06, 2010, 12:55:26 am by EEVblog »
 

Offline Simon

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Re: EEVblog #81 – Smart Tweezers
« Reply #9 on: May 06, 2010, 06:34:38 am »
I think basically the treezers are designed for production use and will grreatly speed up small to medium runs of production
https://www.simonselectronics.co.uk/shop
Varied stock of test instruments and components including EEVblog gear and Wurth Elektronik Books.
Also, if you want to get ripped off: https://www.ebay.co.uk/usr/simons_electronics?_trksid=p2047675.l2559
 

Offline charliex

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Re: EEVblog #81 – Smart Tweezers
« Reply #10 on: May 18, 2010, 07:06:15 pm »
I've posted this before, and i have no clue if it works properly, but a few people have built them, i got as far as cutting the PCB.

the superprobe! built in the old radio shack logic probes (which mine had like 5V on the tip!)

http://members.cox.net/berniekm/super.html
 

Offline EEVblog

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Re: EEVblog #81 – Smart Tweezers
« Reply #11 on: May 18, 2010, 09:56:06 pm »
BTW, I'm supposed to be getting the Agilent LCR meter for review. I already have the similar Extech one, so it will be a mini shootout.

Dave.
 

Online mikeselectricstuff

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Re: EEVblog #81 – Smart Tweezers
« Reply #12 on: May 19, 2010, 11:06:52 pm »
Here's something rather cheaper - no L measurement though
Youtube channel:Taking wierd stuff apart. Very apart.
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Offline saturation

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Re: EEVblog #81 – Smart Tweezers
« Reply #13 on: May 20, 2010, 01:19:46 am »
Great!  I hope they send you more stuff across all types of gear, chips, evaluation boards etc.,


BTW, I'm supposed to be getting the Agilent LCR meter for review. I already have the similar Extech one, so it will be a mini shootout.

Dave.
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 Saturation
 

Offline EEVblog

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Re: EEVblog #81 – Smart Tweezers
« Reply #14 on: May 20, 2010, 01:52:09 am »
Here's something rather cheaper - no L measurement though

Ah, Tenma must be rebadging Extech then, because I already have the exact same Extech RC200 for review.

Dave.
 

Offline Simon

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Re: EEVblog #81 – Smart Tweezers
« Reply #15 on: May 20, 2010, 06:38:56 am »
Here's something rather cheaper - no L measurement though

Ah, Tenma must be rebadging Extech then, because I already have the exact same Extech RC200 for review.

Dave.

the range on them is a bit limiting you can't measure mohm resistors and there is no inductance measurement so it's a toy
https://www.simonselectronics.co.uk/shop
Varied stock of test instruments and components including EEVblog gear and Wurth Elektronik Books.
Also, if you want to get ripped off: https://www.ebay.co.uk/usr/simons_electronics?_trksid=p2047675.l2559
 

Offline saturation

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Re: EEVblog #81 – Smart Tweezers
« Reply #16 on: May 20, 2010, 11:46:41 am »
Nice, a more affordable version of the Canadian tweezer.  Sure inductance is missing, but while I don't SMD as much, I do find identifying the parts a major PITA that keeps me from moving there, and accuracy isn't needed, just I.D. is enough.

What would matter to me is how good a tweezer [it looks big and bulky on some pics] like device it is, the response time and battery life.  I notice it seems to have a nice sharp tip, removeable tweezers to convert it into a basic DMM, and the tweezer has some sort of adjuster on it:






http://www.extech.com/instruments/product.asp?catid=44&prodid=617



Here's something rather cheaper - no L measurement though

Ah, Tenma must be rebadging Extech then, because I already have the exact same Extech RC200 for review.

Dave.
« Last Edit: May 20, 2010, 11:50:45 am by saturation »
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 Saturation
 

Offline saturation

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Re: EEVblog #81 – Smart Tweezers
« Reply #17 on: May 20, 2010, 03:23:08 pm »
https://www.eevblog.com/forum/index.php?topic=448.msg6436#msg6436

Another poster already showed me this:




You can turn any DMM with shielded banana jacks into a 'tweezer' DMM with the proper leads.  You can make your own but this Chinese lead is only $3 shipped, to the USA.

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=280485825223&ssPageName=STRK:MEWNX:IT#ht_3577wt_911


It may work better for me right now as I'm working in low volume.



Any chance DIY? better than this one? as Dave mentioned, sometime it sucks at automatically detecting whether its L or C (and it got Toy OSC too!). I've found some DIY info in the net (i think i got it from here as well), even with greater accuracy IIRC (not to forgot the Dave's LCR Theoritical Formula Video ;)). And i already ordered a cheap USD4 tweezer http://cgi.ebay.com.my/Smart-SMD-SMT-CHIP-resistance-Test-Clip-Tweezer-/220494212794?cmd=ViewItem&pt=LH_DefaultDomain_0&hash=item33567aaeba and will see what can i do with it. I'm thinking of larger LCD which display all the LCR (vertically) at the same time and put an arrow on the left indicating which is more likely that the device is auto detecting, so we got an opinion from the device, but if we refuse that, all the LCR values are there for us to choose. isnt that great? i think it is! haha :D. just my 2 cents :P

ps: remember the Dave's Product Design Crap video?

Best Wishes,

 Saturation
 

Offline saturation

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Re: EEVblog #81 – Smart Tweezers
« Reply #18 on: May 20, 2010, 06:14:50 pm »
S&H on that ebay link is $2.10 so total = $3.10  You're ok!   :D

Another poster already showed me this:
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=280485825223&ssPageName=STRK:MEWNX:IT#ht_3577wt_911

USD1?! u got to be kidding me! i just got ripped off USD3!

:D
Best Wishes,

 Saturation
 


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