Products > Dodgy Technology

Pokit

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NichPokit:
Hi,

Sorry to bump a dead thread, but I figured I'd answer some of the questions.

It really will be a 600V CAT III multimeter, with appropriate protection circuitry. We'll be formally certifying it to 61010-1 and 61010-33.

Just before the kickstarter, we originally intended to release a 300V CAT II product. That fuse is from the older design, we've now bumped up to 6.3 x 32mm. Our Industrial designer was not pleased!


--- Quote from: jeroen79 on April 05, 2020, 10:23:45 pm ---
--- Quote from: NichPokit on March 30, 2020, 12:04:04 am ---I'm one of the hardware engineers working on the Pokit Pro.
--- End quote ---
Welcome!

The specs say that it can measure up to 10A.
What kind of protections are there against, for example, sticking it in a mains outlet while in current mode thinking it is in voltage mode?

--- End quote ---

This sort of forseeable misuse is covered in the standard, so we have thought of that.
When you've got the device in the low current measurement range (with the physical switch on the side), there's some big diodes to clamp the voltage. They're sized so that either the fuse blows, or if there's not enough current to blow the 500mA fuse they can happily dissipate the power forever.

If you're in the high current measurement range, the shunt resistor will blow the high current fuse (if there's not enough current to blow the fuse, it's also sized appropriately to dissipate the power indefinitely)

AVGresponding:

--- Quote from: NichPokit on November 12, 2020, 10:48:40 pm ---Sorry to bump a dead thread, but I figured I'd answer some of the questions.

--- End quote ---

No need to apologise; it's nice to get some feedback from a manufacturer that doesn't consist of blowing smoke/marketing wank/pseudo science bs.

Though the Pokit doesn't fit any of my personal use criteria, it's plain to see you are at least making some serious efforts to create a worthwhile product.

For maximum credibility however, I suspect you'll have to send some sacrificial lambs to the likes of Dave and Joe, for teardown/analysis and test-until-failure.

EEVblog:

--- Quote from: AVGresponding on November 13, 2020, 02:46:09 pm ---For maximum credibility however, I suspect you'll have to send some sacrificial lambs to the likes of Dave and Joe, for teardown/analysis and test-until-failure.[/color][/size][/b]
--- End quote ---

For the record, I'm not interested, for reasons I won't go into.

JPortici:

--- Quote from: EEVblog on November 21, 2019, 12:37:49 am ---
--- Quote from: thm_w on November 20, 2019, 10:58:37 pm ---https://www.smh.com.au/business/small-business/from-lab-to-boardroom-how-australian-inventors-become-founders-20190131-p50upv.html
Maybe Dave can give them a visit.

--- End quote ---

Sorry, won't happen, for reasons I won't go into.
Paul is a former colleague from way back, and coincidentally David used to work for them (they are a contract design house).
I'm sure the Pokit is going to be reasonably well engineered, so I wouldn't list it under Dodgy.

--- End quote ---

They just arrived here, boss ordered some from the campaign 2 years ago (at 50 each, now they cost more than three times that).
They indeed appear very well engineered and the app really works, you can also get data from multiple devices on the same phone and combine them.
He bought some so that he can send them to idiot customers that can't or won't use a multimeter and if they must they are completely clueless and refuse to learn something (mechanics, salesmen) such as it's really different if you say 2.5mV rather than 2.5V and we just wasted a day and an half over that.
Also to get the waveform from digital sensors so that we don't have to guess protocols.

Shall i make some tests?

thm_w:

--- Quote from: JPortici on May 25, 2022, 07:15:17 am ---They just arrived here, boss ordered some from the campaign 2 years ago (at 50 each, now they cost more than three times that).
They indeed appear very well engineered and the app really works, you can also get data from multiple devices on the same phone and combine them.
He bought some so that he can send them to idiot customers that can't or won't use a multimeter and if they must they are completely clueless and refuse to learn something (mechanics, salesmen) such as it's really different if you say 2.5mV rather than 2.5V and we just wasted a day and an half over that.
Also to get the waveform from digital sensors so that we don't have to guess protocols.

Shall i make some tests?

--- End quote ---

That took a while.
Use care does make sense, but then, if the customers are that clueless they might have problems pairing to a phone and running the app. A simple voltmeter display might make more sense (if the customer is only going to be measuring voltage).

Looks like there is Pokit Pro as well ($175):
https://www.pokitinnovations.com/pokit-pro/

Specs are worse than Mooshimeter for the same price, but, form factor is quite different.

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