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MeasurementBlues
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Impractical
MeasurementBlues   11/11/2013 11:22:55 PM
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Have you seen Gabriel's video? As soon as you attach probes from the scope to your circuit, your wrist is tied to it unless you have very long probe leads. What happens if you move? You either break the probes or yank the circuit with you.

Etmax
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Rookie
Re: Cool tool!! but...
Etmax   9/29/2013 12:53:27 PM
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I have a proper (well full sized anyway) ARB and have often needed to generate test signals. What I do is do some testing while capturing input waveforms with my DSO and when I get a fail I take that captured input waveform and download it to the ARB and replay it creating the fail conditions which I can use to understand the failure mode. Also I can create special waveforms that reflect boundary conditions most effectively and test my designs that way. I don't use the ARB as often as my DSO but it's a great tool. I'm thinking of going with a Tek 2-ch ARB next time as this really opens up possibilities.

tiorbinist
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Usefulness question
tiorbinist   9/29/2013 10:59:07 AM
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I own two of Gabriel's little masterpieces. The larger one sits on my test setup at work, wired into the power. I have a pair of TEK probes, and have provided BNC connections to the appropriate pins. There is nothing better for verifying sensors and switch bounce. In my line of work, sensor signals can often be something they shouldn't be, but an O'scope is considered overkill. The O'scope watch should find a place on any Field Service Engineer's or Technician's wrist. The important things are always power and probes. If Gabriel makes an interface module with good buffering/grounding, there's no reason not to have it on a cable to a more secure location (utility belt anyone?) allowing battery augmentation and a clean probe attachment. It doesn't even _have_ to look geeky...until deployed. As for battery power, Gabriel is quite aware of current draw, and has FAQs on it for his other scopes. No reason to suppose he'll drop the ball on the watch. There are a lot of cell phone rechargers out there that can keep a watch like this going without having to leave it behind to recharge for hours. And as a scope, it'd just make sense to always have one on hand to ensure that the battery hasn't been drained in watch mode to the point where it won't work for a heavy troubleshooting session. The number of problems I've tested and proven with the mini and micro boards justifies some real interest in the watch. Something not mentioned here, also , is that they are not program-fixed: you can get the (free) atmel studio and reprogram them to do anything you want, within the limits of the processor core. That's a lot. I can't recommend them highly enough.

Caleb Kraft
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Blogger
Re: Gabotronics Goodies
Caleb Kraft   9/26/2013 9:51:56 PM
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In the video you can see he has one hooked up to a little microphone. That would do.

David Ashton
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Re: Gabotronics Goodies
David Ashton   9/26/2013 9:49:53 PM
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Yeah that would be cool.  So Gabriel better build in a radio (or an MP3 player) to provide said music signal.   I guess you could have it displaying the output of the generator but music would look way cooler.   :-)

Caleb Kraft
User Rank
Blogger
Re: Gabotronics Goodies
Caleb Kraft   9/26/2013 9:09:34 PM
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honestly I think I would just have it display a sound waveform all the time... because it is neat. 

David Ashton
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Gabotronics Goodies
David Ashton   9/26/2013 6:51:55 PM
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Gabriel's stuff is very cool.  I have one of his older boards that I am going to build into a breadboard (when I get the time....)

As per the above posters, i wonder how useful a scope watch would really be - apart from anything else it would limit the use of the hand you were wearing it on.  Maybe the strap could become a stand?   The limited battery life will put a lot of people off.  So maybe make a hinged cover with a solar cell on it to act as a dual-purpose charger and screen protector. or build solar cells into the strap, or sell it with a stand  to sit it on overnight that acts as a charger...??

But I think Gabriel could make his money on this selling them to geeks like Max and me :-)

 

A Metcalfe
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Rookie
Wristwatch CRO - other applications
A Metcalfe   9/26/2013 6:36:22 PM
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I can't see that many uses for a handheld CRO and signal generator, HOWEVER, there are many IT and installer folk who could use a TDR, which requires almost the same hardware.
TDR's are used to send a tiny blip down a wire and look for reflections caused by breaks, joins, taps and ends of wires. It's quite easy to measure to within a few centimetres where a cable join is, for example. They can also be used for optical fibre.

This is probably a larger market for the designer than the plain old oscilloscope, as extreme portability is of concern for the installers/IT folks.

 

-Andrew M

Max The Magnificent
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Re: Cool tool!! but...
Max The Magnificent   9/26/2013 5:06:41 PM
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@Rick: ...I almost never need to generate a test signal ;-)

Let's just hope that one day there isn't a crisis and someone shouts "Is there an engineer in the house who can generate a test signal?"

rick merritt
User Rank
Blogger
Re: Cool tool!! but...
rick merritt   9/26/2013 4:59:59 PM
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Actually I have never so far needed to generate a test signal, but the day's still young and I'm only 56 ;-)

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