Author Topic: Digital oscilloscope project/kit  (Read 56760 times)

Offline RobWilson

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Digital oscilloscope project/kit
« on: December 04, 2015, 03:59:23 PM »
Hi Lads


Being that time of year AGAIN when the nights are dark and cold I thought I would have a go at doing a bit electronics , still lots to learn lol ,any way I bought one of those wee oscilloscope projects ,I think mine is a knock off , any way it was fun to put together and it works .  :bugeye:







Trace is noisy ,but it was only 15 delivered  :coffee:



Rob
« Last Edit: December 04, 2015, 04:34:51 PM by RobWilson »

Offline John Rudd

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Re: Digital oscilloscope project/kit
« Reply #1 on: December 04, 2015, 05:03:44 PM »
Looks very good Rob...  :thumbup:
Got a link for where you bougt it?

Might get one meself...
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Offline RobWilson

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Re: Digital oscilloscope project/kit
« Reply #2 on: December 04, 2015, 05:48:03 PM »
Here you go mate http://www.banggood.com/DSO138-DIY-Digital-Oscilloscope-Kit-Electronic-Learning-Kit-p-969762.html      , Banggood   :Doh:

I think you can get them off of ebay too :thumbup:



Rob


Offline PekkaNF

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Re: Digital oscilloscope project/kit
« Reply #3 on: December 05, 2015, 04:44:52 AM »
That looks pretty good.

No surface mounts to solder as I see?

Did you use all components from the kit? Is there immediate need to change, I'm pretty suspicious of the electrolytes and switches at that price range.

Are you going to mount it on anything or just save the hassle and use as it is?

Thanks for sharing.

OT:
 I have been thinking of buying an entry level digital scope, but haven't decided even price/speck range. There is always something I can imagine that cheap one would not do, but often the simplest will do.

Most often I'll measure few mV signals under 10 Mhz, but pretrigger would be nice. Almost as often I'll measure line voltage power supplies 240 or 400 AC and often "memory" and 2-4 channels would be nice, but triggering is fairly basic.

That would not do anything that well, but because it's so cheap it could do may things and even rigged for a specials.

Pekka

Offline RobWilson

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Re: Digital oscilloscope project/kit
« Reply #4 on: December 05, 2015, 05:54:50 AM »
Hi Pekka



Quote
No surface mounts to solder as I see?

It depends on what kit comes ,some dont have the SMD soldered .

Quote
Did you use all components from the kit? Is there immediate need to change, I'm pretty suspicious of the electrolytes and switches at that price range.

I used all the components and hardware that came with the kit , I did test each part/component before soldering to the board , as the instructions advised to do . all was good.

Quote
Are you going to mount it on anything or just save the hassle and use as it is?

I am undecided on what to do at the moment , if I had a 3DP I would have a go at printing a case for it , but I don't as yet so I  may make a wee stand for it ,more to give it mass so the leads dont pull it around the bench.


Rob




Offline Joules

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Re: Digital oscilloscope project/kit
« Reply #5 on: December 05, 2015, 07:26:28 AM »
I know a guy who can help you out there Rob   :thumbup:

A printed case, segmented coolant hose for the stand and a Mag base so you can clip it where its needed.
Just get doing and make swarf, you can decide what its going to be later.   :thumbup:

Offline RobWilson

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Re: Digital oscilloscope project/kit
« Reply #6 on: December 05, 2015, 07:59:13 AM »
I know a guy who can help you out there Rob   :thumbup:

A printed case, segmented coolant hose for the stand and a Mag base so you can clip it where its needed.

Thanks Joules  :thumbup: 


I will have to see what I can come up with  :smart: 


Rob

Offline John Rudd

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Re: Digital oscilloscope project/kit
« Reply #7 on: December 05, 2015, 07:59:49 AM »
There are two options for construction.
1st is smd components pre mounted then just add the thru hole items or
2nd The micro is pre mounted, you add the smd passives and then the th components to complete construction.....

I got this info from the JYE website....they say that there are numerous copies floating around, not happy that their work has been plagiarised....
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Offline shipto

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Re: Digital oscilloscope project/kit
« Reply #8 on: December 05, 2015, 05:18:59 PM »
I like that it will make a reasonable mobile unit. Already put order in with daughter for Christmas  :D
Turns out this life c**p is just one big distraction from death but a good one. For the love of god dont give yourself time to think.
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Offline Joules

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Re: Digital oscilloscope project/kit
« Reply #9 on: December 06, 2015, 12:08:36 PM »
Here you go Rob, have a think about a case you can't easily be machined.



I have nick named this the "Wilson Ninja Turtle Scope", as the casing is very much like that of a turtle shell, recessed display and buttons, though I didn't spend anymore time on the buttons, but you get the idea.   Convert your three selector switches to rotary activation (disk with a slot in it below the knob)  Bit of trial and error should see it all worked out.   Rear half of the casing has enough room to accommodate a USB power pack for wireless operation.  Two halves screw together, it's just a doodle to get you thinking.    :dremel:

          Joules

Hmmm, looking at the 3D this end it could also represent an overfilled hot water bottle too.... :palm:
« Last Edit: December 06, 2015, 01:59:11 PM by Joules »
Just get doing and make swarf, you can decide what its going to be later.   :thumbup:

Offline RobWilson

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Re: Digital oscilloscope project/kit
« Reply #10 on: December 06, 2015, 03:12:27 PM »
Quote
"Wilson Ninja Turtle Scope"


 :lol: :lol: :lol: I like it Joules  :beer:  ,

Quote
have a think about a case you can't easily be machined

There is allot of freedom with 3DP ,  that a complex shape to machine , yes it doable with a cnc mill but not everyone has one of those .  What modeling software are you working with Joules ? 


I have been thinking of maybe hydro dipping or even plating 3DP parts  .   


Cheers Rob 

Offline Joules

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Re: Digital oscilloscope project/kit
« Reply #11 on: December 06, 2015, 03:33:11 PM »
The software I use here is Rhino, export's are STL to Simplify3D for printing.



Better buttons and insets for the power and scope input.   Very easy to visualise ideas, such as sculpting out the rotary dial area to the outer edge so they are easier to access and rotate by 90 degree the knob grips.    8-) it's addictive.

Hydro dipping works, you just have to get a good surface finish on the prints (they wet sand well).  Electro plating kits exist but cost a ridiculous amount for what they are.  However it's not rocket science to do in the kitchen when the wife is out   :thumbup:

http://lnx.robotfactory.it/en/copperface-the-new-mini-galvanic-is-coming/
Just get doing and make swarf, you can decide what its going to be later.   :thumbup:

Offline Joules

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Re: Digital oscilloscope project/kit
« Reply #12 on: December 06, 2015, 03:44:56 PM »
On the other hand, should you have an expired tortoise that could become your scope case and save all this 3D printing hassle    :lol:
Just get doing and make swarf, you can decide what its going to be later.   :thumbup:

Offline tom osselton

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Re: Digital oscilloscope project/kit
« Reply #13 on: December 06, 2015, 03:54:55 PM »
Here is some copper conductive paint for $40.00

http://www.caswellplating.com/copper-conductive-paint-4oz.html

Offline philf

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Re: Digital oscilloscope project/kit
« Reply #14 on: December 06, 2015, 04:40:37 PM »
....... yes it doable with a cnc mill but not everyone has one of those.....................

But you nearly have Rob  :thumbup:

Phil.
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Offline krv3000

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Re: Digital oscilloscope project/kit
« Reply #15 on: December 07, 2015, 05:08:07 PM »
brill work rob

Offline RobWilson

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Re: Digital oscilloscope project/kit
« Reply #16 on: December 09, 2015, 05:43:11 PM »

Hydro dipping works, you just have to get a good surface finish on the prints (they wet sand well).  Electro plating kits exist but cost a ridiculous amount for what they are.  However it's not rocket science to do in the kitchen when the wife is out   :thumbup:

http://lnx.robotfactory.it/en/copperface-the-new-mini-galvanic-is-coming/

Hi Joules

Electroplating is a walk in the park  :)





Been messing with some Electroless plating






All good stuff  :thumbup:.


Here is some copper conductive paint for $40.00

http://www.caswellplating.com/copper-conductive-paint-4oz.html



Hi Tom , thanks for the link  :beer:  , I have a few recipes for conductive paint so I may have ago at brewing my own  :smart:


....... yes it doable with a cnc mill but not everyone has one of those.....................

But you nearly have Rob  :thumbup:

Phil.


 :Doh: so I do Phil  :lol: :lol: I MUST get back onto that project ,,,,,,,,,,,,I MUST i MUST !


brill work rob


Cheers Bob  :beer:



Rob




Offline sparky961

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Re: Digital oscilloscope project/kit
« Reply #17 on: December 09, 2015, 07:23:47 PM »
AHAH!  That's how you get everything so shiny! :P  :zap:

I read through the specs when you first posted about the 'Scope.  Did I understand correctly that the maximum frequency is 20 kHz?  For the price, it still seems a good deal.  Though if I were to get another one to replace the "CRT suitcase" I got rid of a few years back I think I'd want at least a few MHz.  Tempting little tool nonetheless.

Offline RobWilson

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Re: Digital oscilloscope project/kit
« Reply #18 on: December 21, 2015, 01:01:37 PM »
Hi Sparky

Yes I cheat  :lol:


Well another parcel arrived today ,a component tester . :zap:





I welded all the joints as per instructions .




I added the fly leads , Works a charm  :thumbup:









There are three pads to test  SMD ,and it has a few other features to explore, not bad for  13  shipped .


Rob

Offline philf

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Re: Digital oscilloscope project/kit
« Reply #19 on: December 21, 2015, 01:52:35 PM »
Rob,

That looks very useful. Where did you buy it from?

I nearly sent for an oscilloscope kit like yours the other day. I have two scopes - a small 15MHz very portable one and a 50MHz storage scope (not so portable). I plugged the small one in and up came two beams. 30 seconds later the beams disappeared and there was an awful blown up capacitor smell. Then I got the big one out and no beams to be seen at all. Remove the covers, unmake and make all the internal connectors and voila, it worked.

Cheers.

Phil.
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Offline RobWilson

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Re: Digital oscilloscope project/kit
« Reply #20 on: December 21, 2015, 02:08:37 PM »
Hi Phil

Bummer your scopes going South on you , I have a cracking 100MHz scope Dave BC kindly donated to me , I mainly got the kits for a bit practice and to help understand whats going on , not arsed if I blow the cheap kit one with my prodding and poking about ,I would just build another. 

Here you go  , same place the scope came from  http://www.banggood.com/DIY-M12864-Graphics-Version-Transistor-Tester-Kit-LCR-ESR-PWM-p-986954.html

You can get them off of ebay already built up ,there are a few different flavours to choose from .

Here it is outputting a PWM  :zap:





Cheers Rob

Offline Joules

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Re: Digital oscilloscope project/kit
« Reply #21 on: December 21, 2015, 02:53:31 PM »
Useful bit of kit that Rob, and it compliments your scope.
Just get doing and make swarf, you can decide what its going to be later.   :thumbup:

Offline RobWilson

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Re: Digital oscilloscope project/kit
« Reply #22 on: December 22, 2015, 10:39:07 AM »
Cheers Joules  :beer:


The colour matches my eyes  :lol: 

Rob

Offline raynerd

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Re: Digital oscilloscope project/kit
« Reply #23 on: December 22, 2015, 02:37:57 PM »
Rob, thanks for posting this. I believe Father Christmas is bringing me one - well he best had be as I ordered it, collected from the PO and gave it to my wife  :thumbup:

I`ve been looking at a decent signal gen. as I have nothing to use it with at home! they do some kits for 20 and nearly got one last week but the kids have soaked up all my cash this month!

Cheers again Rob

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Offline Joules

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Re: Digital oscilloscope project/kit
« Reply #24 on: December 22, 2015, 02:45:51 PM »
Use your sound card, on PC, tablet etc.  Some good waveform generators, ok so your limited to 20khz or maybe 48khz if your really lucky.
Just get doing and make swarf, you can decide what its going to be later.   :thumbup: