Author Topic: µCurrent GOLD on Kickstarter  (Read 166272 times)

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Offline wilheldp

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Re: µCurrent GOLD on Kickstarter
« Reply #325 on: February 11, 2014, 01:24:44 am »
Just a sanity check. I am assuming the "polling" on KS for the shipping addresses for the main batch (i.e., after the initial 200 units or so) has *not* happended yet. Is that right? I have not seen anything yet. I have been charged for my unit, and I am content to wait patiently, but just want to make sure I didn't miss it.  Thanks.

- Bob, KY3R

Funny you should ask.  About 1 hour after you posted this, I got the survey from Kickstarter.
 

Offline rjk5378

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Re: µCurrent GOLD on Kickstarter
« Reply #326 on: February 11, 2014, 02:35:03 am »
Funny you should ask.  About 1 hour after you posted this, I got the survey from Kickstarter.

Hmmm. I haven't received anything yet. I assume this will come to the email address I used when I backed the project.
- Bob, KY3R
 

Offline wilheldp

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Re: µCurrent GOLD on Kickstarter
« Reply #327 on: February 11, 2014, 02:37:36 am »
I was in the batch of 200 after the first 30, hand-signed ones.  So if you aren't in that batch, you probably haven't gotten the survey yet.
 

Online EEVblog

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Re: µCurrent GOLD on Kickstarter
« Reply #328 on: February 11, 2014, 04:32:27 am »
Just a sanity check. I am assuming the "polling" on KS for the shipping addresses for the main batch (i.e., after the initial 200 units or so) has *not* happended yet. Is that right?

Correct.
 

Offline calexanian

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Re: µCurrent GOLD on Kickstarter
« Reply #329 on: February 12, 2014, 03:43:16 am »
I got the "POLL" email monday I believe and I was in the first 200 batch. So far so good.  :-+
Charles Alexanian
Alex-Tronix Control Systems
 

Offline con-f-use

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Re: µCurrent GOLD on Kickstarter
« Reply #330 on: February 12, 2014, 09:47:04 am »
I got the "POLL" email monday I believe and I was in the first 200 batch. So far so good.  :-+

Me too. In retrospect I shouldn't have used all those special German letters in my address (like "ß" and "ü"). Hope it's not going to be a problem. They're just contractions and can easily be replaced by "ss" and "ue".
 

Offline gemby

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Re: µCurrent GOLD on Kickstarter
« Reply #331 on: February 12, 2014, 10:26:31 am »
Suggestion for Dave, if possible, you can make similar video too with µCurrent in production.



It could be interesting, since very few of hobbyists has ever see those machinery in action, and regardless that there is a ton of similar videos on YouTube, it could be interesting to see your own board birth.
 

Offline Galenbo

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Re: µCurrent GOLD on Kickstarter
« Reply #332 on: February 12, 2014, 10:44:13 am »
I HAVE MORE MONEY THAN SENSE OPTION.



Strange that the battery can't be included. Is this some AU regulation?
I recently bought a product with a CR2032 on it in Europe.

« Last Edit: February 12, 2014, 10:47:53 am by Galenbo »
If you try and take a cat apart to see how it works, the first thing you have on your hands is a nonworking cat.
 

Online EEVblog

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Re: µCurrent GOLD on Kickstarter
« Reply #333 on: February 12, 2014, 11:44:44 am »
Strange that the battery can't be included. Is this some AU regulation?

Anything with any form of lithium battery, no matter how low energy, is not allowed to go by Australia Post airmail within or outside the country.
It's the law for a "general carrier" like them.
 

Offline con-f-use

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Re: µCurrent GOLD on Kickstarter
« Reply #334 on: February 12, 2014, 12:28:00 pm »
Sounds like the kind of unreflected over reaction legislators have, every time a statistically inevitable mishap happens:

"Boohoo, we've shipped a bazillion Li-Ion batteries. Now after 30 years one has exploded. It was defective to begin with. Never mind the bazillion that didn't. Ban them! BAN THEM ALL!!! ...NOW!!!"  :palm:
 

Online EEVblog

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Re: µCurrent GOLD on Kickstarter
« Reply #335 on: February 12, 2014, 12:32:55 pm »
Sounds like the kind of unreflected over reaction legislators have, every time a statistically inevitable mishap happens:
"Boohoo, we've shipped a bazillion Li-Ion batteries. Now after 30 years one has exploded. It was defective to begin with. Never mind the bazillion that didn't. Ban them! BAN THEM ALL!!! ...NOW!!!"  :palm:

and they don't even take into account energy density. So a CR1616 battery is just as illegal and deemed to be the same risk as a 1000Wh ultra high high current pack.
 

Offline rjk5378

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Re: µCurrent GOLD on Kickstarter
« Reply #336 on: February 12, 2014, 02:34:27 pm »
Anything with any form of lithium battery, no matter how low energy, is not allowed to go by Australia Post airmail within or outside the country.
It's the law for a "general carrier" like them.

Same true of U.S. Postal Service. In fact, every time I go to the post office to send a package, the agent robotically rattles off this rote formula asking whether my package has any hazardous materials. At the end of the litany is "... lithium batteries or perfume." Okay, while I understand the potential issue with lithium batteries--in theory, at least, although as a practical matter it is regulatory overkill--what's the deal with perfume?!
- Bob, KY3R
 

Offline andtfoot

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Re: µCurrent GOLD on Kickstarter
« Reply #337 on: February 12, 2014, 02:56:09 pm »
what's the deal with perfume?!
I'm guessing it's due to the flammability; it's basically ethanol with smelly stuff thrown in.
 

Offline SeanB

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Re: µCurrent GOLD on Kickstarter
« Reply #338 on: February 12, 2014, 06:45:05 pm »
More the fact that most perfume is in glass fragile bottles that may explode in unpressurised cargo. They also frown on spray cans these days. Flammable vapour and an ignition source like a platinum ring in another envelope or a nickel catalyst like stainless steel will possibly result in a fire if the conditions are exactly right and you have enough heat from another source to start the reaction.
 

Offline Bored@Work

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Re: µCurrent GOLD on Kickstarter
« Reply #339 on: February 12, 2014, 07:24:28 pm »
and they don't even take into account energy density. So a CR1616 battery is just as illegal and deemed to be the same risk as a 1000Wh ultra high high current pack.

Even if small they burn very hot, quickly igniting other things. Imagine that happening in a stack of mail.
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Offline Gribo

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Re: µCurrent GOLD on Kickstarter
« Reply #340 on: February 16, 2014, 11:06:44 am »
Also, most places don't have the correct extinguishers for lithium fire. Lithium + water = bigger fire.. :)
 

Offline MLXXXp

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Re: µCurrent GOLD on Kickstarter
« Reply #341 on: February 17, 2014, 03:54:28 pm »
Dave,
In your recent Kickstarter update #17 video, at approx. 0:34, you mention that the board at position 6 (S/N 202) had "failed the spec on one of the ranges". Just out of curiosity, I'd be interested in knowing what the problem turned out to be.

Also, what percentage of boards have had problems, so far. Have there been just a few identical problems or random issues?
 

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Re: µCurrent GOLD on Kickstarter
« Reply #342 on: February 19, 2014, 10:53:25 am »
In your recent Kickstarter update #17 video, at approx. 0:34, you mention that the board at position 6 (S/N 202) had "failed the spec on one of the ranges". Just out of curiosity, I'd be interested in knowing what the problem turned out to be.

In theory a board may not pass spec due to accumulative component errors. I test to a tighter spec than the worst case error margin. So I expect some failures here.

Quote
Also, what percentage of boards have had problems, so far. Have there been just a few identical problems or random issues?

A few solder bridges on some re-hand soldered parts that got rotated incorrectly on the machine setup, no big deal, and fixed for the next run.
Have not tested them all yet though.
 

Offline TheRuler8510

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Re: µCurrent GOLD on Kickstarter
« Reply #343 on: February 21, 2014, 01:39:38 am »
Dave,

Are you going to test the next batch of 2,000 units (or whatever) by yourself and assemble them?

Sounds like a lot of work. Might be a time to put the wife to work!
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Online EEVblog

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Re: µCurrent GOLD on Kickstarter
« Reply #344 on: February 21, 2014, 01:56:16 am »
Are you going to test the next batch of 2,000 units (or whatever) by yourself and assemble them?

No, I want to get the assembler to do the testing.
 

Offline calexanian

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Re: µCurrent GOLD on Kickstarter
« Reply #345 on: February 21, 2014, 05:56:53 am »
Strange that the battery can't be included. Is this some AU regulation?

Anything with any form of lithium battery, no matter how low energy, is not allowed to go by Australia Post airmail within or outside the country.
It's the law for a "general carrier" like them.

Same law here in the states, however many people ignore it. Generally it only applies to bulk batteries though and most lithium batteries say somewhere on the box "Not for transport aboard passenger aircraft" as well.
Charles Alexanian
Alex-Tronix Control Systems
 

Offline RobertHolcombe

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Re: µCurrent GOLD on Kickstarter
« Reply #346 on: February 24, 2014, 03:48:05 am »
Received 00242 today, thanks dave :D
 

Offline VK5RC

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Re: µCurrent GOLD on Kickstarter
« Reply #347 on: February 24, 2014, 05:01:58 am »
Received 00208 in Adelaide today,  Thanks. Rob
Whoah! Watch where that landed we might need it later.
 

Offline VK5RC

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Re: µCurrent GOLD on Kickstarter
« Reply #348 on: February 24, 2014, 10:49:25 am »
Got to be pretty happy with this accuracy. I calculate 0.02% in sub microamp range! ;D
0.05V from HP E3644, 100K Ohm resistor Vishay foil
Current with Agilent 34461A ( in calibration) in the dark photo below
Voltage with Agilent 34401A (out of Calibration but 1V range within specs) blurry photo!
Whoah! Watch where that landed we might need it later.
 

Offline nihilism

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Re: µCurrent GOLD on Kickstarter
« Reply #349 on: February 26, 2014, 09:57:10 am »
#246 Has been received. Thanks Dave!
 


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