Thread: OT: $22 Digital Storage Scope :)

Today I finished assembling the $22 digital storage scope:

http://www.banggood.com/DSO138-DIY-D...-p-984002.html

It seems well made, with very clear screening on the PCB and very detailed and accurate instructions in good English. It took about two hours to assemble the parts, and it worked perfectly right from the start, although it does not have a power-on reset, so the power must be applied using a switch.



This is the waveform displayed by touching my finger to the input, picking up 60 Hz AC noise through capacitance (or maybe magic):



The bottom view showing some of the components. There are two female 2-pin headers that seem to be only for mechanical support of the display:



And the back side:



This may prove handy when testing circuits that need isolation from ground, and it's also somewhat expendable in case of accident. I have not yet tried the USB cable, and the instructions don't cover that.

Anyway, now you guys won't have any excuse for not showing waveforms because you can't afford a scope, or have no place to put it. This is truly a "pocket scope", for "pocket change".

Does it come with a probe? Looks useful! I've been getting by with a logic analyzer but could use a scope


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Wow thanks for sharing that Paul, nice little project, I'll have to do a little bit of research on this.
Who'd a thunk that the "Heathkit experience" was alive and well in China?

Thanks for the feedback Paul I'm waiting for mine to turn up should be anytime soon I went for the optional plastic case:



did you have any construction issues at all?

Paul

Might be a decent automotive scope.

Input voltage range? 10 mv -5V

Frequency range? 200 kHz

Not doin too well. for 50 bucks you can find 50 mHz analog scopes around.


I have 'scopes, I would find a logic analyzer to be a good adjunct now. Never much needed one before. Probably a similar LA out there somewhere.

They mentioned 1Hz test signal. Did they mean 1 kHz?

Originally Posted by J Tiers

Input voltage range? 10 mv -5V

Frequency range? 200 kHz

Not doin too well. for 50 bucks you can find 50 mHz analog scopes around.


I have 'scopes, I would find a logic analyzer to be a good adjunct now. Never much needed one before. Probably a similar LA out there somewhere.

One that fits in your tool box and runs off 9vdc?

Originally Posted by Forestgnome

One that fits in your tool box and runs off 9vdc?

Sure... see here:

http://www.amazon.com/SainSmart-Upgr.../dp/B004Y3QHZ6

There are a plethora of small pocket scopes that do at least 1 MHz and will acceptable a more useful input voltage range, all for less than $100. Maybe not $22, but it comes fully assembled (how much is 2 hours of your time worth?) and can do a lot more.

Just my $0.02.

Originally Posted by Fasttrack

Sure... see here:

http://www.amazon.com/SainSmart-Upgr.../dp/B004Y3QHZ6

There are a plethora of small pocket scopes that do at least 1 MHz and will acceptable a more useful input voltage range, all for less than $100. Maybe not $22, but it comes fully assembled (how much is 2 hours of your time worth?) and can do a lot more.

Just my $0.02.

Something's amiss there. Not going to get a true 1Mhz bandwidth with a 1Msps sample rate.