Author Topic: Quark multimeter  (Read 2279 times)

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Offline MegaVoltTopic starter

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Quark multimeter
« on: August 13, 2021, 11:59:29 am »
I got this project: it looks very interesting.

https://www.crowdsupply.com/mulin/quark



« Last Edit: August 13, 2021, 12:01:53 pm by MegaVolt »
 

Offline fcb

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Re: Quark multimeter
« Reply #1 on: August 13, 2021, 02:54:35 pm »
That sharp end will either break off, or stab you when you are least expecting it, etc... They need to make it retractable or removable/replaceable.

Also, the grounding - this happens through the USB port? 3.3A?

 
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Offline guenthert

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Re: Quark multimeter
« Reply #2 on: August 13, 2021, 04:34:51 pm »
Shouldn't that go into the Test Gear section?
 

Offline TimFox

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Re: Quark multimeter
« Reply #3 on: August 13, 2021, 04:42:31 pm »
That looks like how the junior engineers (before I retired) used scope probes:  first, lose the “witch’s hat”, then put the ground wire aside, then lose the ground wire, then return the useless probe to whence it was borrowed.
 

Offline xrunner

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Re: Quark multimeter
« Reply #4 on: August 13, 2021, 05:16:18 pm »
It shows the SMD number code and color code of components based on their resistance or capacitance from some internal library - that's interesting ...
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Offline Kleinstein

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Re: Quark multimeter
« Reply #5 on: August 13, 2021, 05:27:11 pm »
The input does not look very fast, so the long ground lead may not be such a problem.
The display at the end of the probe can still be a bit unconvenient - you just don't see the tip anymore. With a wireless display it may be OK - though more like a tiny, limited frequency scope and not a DMM replacement.

The still have to invent the wireless ground lead.
 

Offline The Soulman

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Re: Quark multimeter
« Reply #6 on: August 13, 2021, 06:19:35 pm »
The input does not look very fast, so the long ground lead may not be such a problem.
The display at the end of the probe can still be a bit unconvenient - you just don't see the tip anymore. With a wireless display it may be OK - though more like a tiny, limited frequency scope and not a DMM replacement.

The still have to invent the wireless ground lead.

Ground is likely (high impedance) ac coupled thru the operators hand.
 

Offline Kean

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Re: Quark multimeter
« Reply #7 on: August 13, 2021, 08:14:30 pm »
Shouldn't that go into the Test Gear section?

Or even better, the Crowd Funded Projects section.
 
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Offline bdunham7

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Re: Quark multimeter
« Reply #8 on: August 13, 2021, 08:18:28 pm »
Measures voltage from 0 to 26 V
Measures current from 0 to 3.2 A
Measures resistance from 0 to 2 MΩ
Measures capacitance from 2 pf to 1000 uF
Measures inductance up to 1 H
Oscilloscope has a sampling rate of 400 kHz

A 3.5 digit 4.5 digit 5 digit 5.5 digit 6.5 digit 7.5 digit DMM is good enough for most people.
 
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Offline The Soulman

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Re: Quark multimeter
« Reply #9 on: August 13, 2021, 08:42:09 pm »
The input does not look very fast, so the long ground lead may not be such a problem.
The display at the end of the probe can still be a bit unconvenient - you just don't see the tip anymore. With a wireless display it may be OK - though more like a tiny, limited frequency scope and not a DMM replacement.

The still have to invent the wireless ground lead.

Ground is likely (high impedance) ac coupled thru the operators hand.

Not if it does more than only producing wobbly lines on a tiny screen.  :-//

I do wonder what that factory makes during the Saturday afternoon shift, or this is it.  :palm:
 

Offline tszaboo

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Re: Quark multimeter
« Reply #10 on: August 13, 2021, 10:02:40 pm »
This is one of those objects that are useless without extra things that completely break the design.
 


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