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Bizzie
Senior Member

Joined: 06/07/2014
Location: Australia
Posts: 192

Posted: 01:00am 18 Jul 2015

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While searching for ESP8266's I came across this oscilloscope kit.
I have no experience with one. Can your experts tell me if this kit would be worth purchasing for general use.

Link is

Rob White

smudge
Newbie

Joined: 04/12/2014
Location: United Kingdom
Posts: 16

Posted: 01:08am 18 Jul 2015

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I Don't know about that one but a couple of years ago I built the one that Picaxe sell which is usb and works quite well not bad for �10

robert.rozee
Guru

Joined: 31/12/2012
Location: New Zealand
Posts: 2440

Posted: 04:41am 18 Jul 2015

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i'd rate such devices as of quite limited usefulness in real-world applications. if you want a cheap oscilloscope, my advice would be to buy a second-hand analog one that uses a CRT. dual trace scopes with 20MHz bandwidth can be had now and then for around $50 or less. in new zealand, https://www.trademe.co.nz is the place to buy such items, i'm sure there is an equivalent site in australia.

in my experience, cheap digital scopes are extremely frustrating, and you need to expend quite a bit of cash to get an instrument that you will be happy with. the rigol DS1052E is model many folks seem to like. in my view, the most important feature is that it has 1Mpts memory depth - that is, it can record 1 million samples once triggered. but this model has a rather small screen and has been around for a few years now; i am pretty sure there are models with better screens out there.

at all costs, avoid anything with small quantities of memory. the strength in any DSO is the ability to capture a large quantity of data and review it. another model that i rather like the looks of is the rigol DS1054Z. this gives you a wide screen, 12Mpts of memory, 4 channels. and these scopes can easily be upgraded with a software key to have double the memory and a number of other features.

if you don't want to spend hundreds (or thousands, or even tens of thousands) of dollars, i'd suggest supplementing a 2nd hand CRT scope with a small USB logic analyzer. there is one that has been mentioned on the forums occasionally that can be had from ebay china for around the $10 mark (a clone, as i recall). i can't remember the model, but i am sure someone else can chip in and fill out the details. again, it is something that folks seem to speak highly of online.

cheers,
rob :-)

Zonker

Guru

Joined: 18/08/2012
Location: United States
Posts: 767

Posted: 05:25am 18 Jul 2015

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Humm..

Lou recently sent me an E-mail from Saelig.com offering the new Rigol scope with a 50mhz vertical amp bandwith, 4 channels and the new 7" screen for $300 beans...

Seems like a very good deal to me...

bigmik

Guru

Joined: 20/06/2011
Location: Australia
Posts: 2949

Posted: 02:18pm 18 Jul 2015

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Hi Rob,

If you are in Melbourne I have a now disused 20MHz dual trace Cro you can have... It has been sitting in the top of my shelf for around 10 years now.. If interested, or if someone else is interested I will dig it out and see if it still works...

I will give Bizzie first dibs and then prefer a student or hobbiest but if they opt out it is up for grabs but must pick up I don't wish to know what price postage would be...

It isn't one if those HUGE old fashioned units but a relatively modern low end x,y,z axis Cro... Dick smith and radio parts etc used to sell it..

I think there are 2 probes with 1:1 and 10:1 switch but if they aren't tucked in with the Cro I have no idea where they are..

Interested?

Anybody?

Must pick up Melbourne nth west subs (hillside)

Regards,

MickEdited by bigmik 2015-07-20

Mick's uMite Stuff can be found >>> HERE (Kindly hosted by Dontronics) <<<

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