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 Forum index » Advanced Topics » Hardware
logic analyzer
Moderators: Flash, Ian, JohnMurga
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Volhout


Joined: 28 Dec 2008
Posts: 402

PostPosted: Fri 06 Dec 2013, 04:57    Post_subject:  logic analyzer
Sub_title: salea
 

Dear readers,

Most of the posts in these forums are about problems. And often offer solutions. This one is different: it offers a solution where there is no problem.
I just want to share a short success story.

In my hobby (electronics) I use an oscilloscope to debug hardware. That is often digital hardware, and I could benefit of a simple logic analyzer.

I found one on ebay (search for 24MHz USB analyzer, or Saleae) for around 12 dollar. It is a chineese clone from a more professional product.

I downloaded the software from www.Saleae.com (a 7 Mbyte zip file for 32 bit linux) and copied it into my home folder. Read the readme.... and clicked on the "Logic" executable. And .... it works.

This is puppy linux Slacko 5.6 (version LXpup 13.10), running on an EeePC netbook.

The desktop icon and menu item must be created manually, since it does not automatically integrate into the puppy structure.

I just wanted to share the success story with you.....
Screenshot_2013-12-06.jpg
 Description   running logic analyzer
 Filesize   74.85 KB
 Viewed   167 Time(s)

Screenshot_2013-12-06.jpg

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greengeek

Joined: 20 Jul 2010
Posts: 2594
Location: New Zealand

PostPosted: Fri 06 Dec 2013, 05:34    Post_subject:  

Nice work. Can this be used to trap a string of pulses for later analysis? That's cool.
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Volhout


Joined: 28 Dec 2008
Posts: 402

PostPosted: Fri 06 Dec 2013, 05:47    Post_subject:  

@ greengeek

Yes, it is a very basic 8 channel analyzer, in that it does not have a hardware trigger function. It just captures data (you can capture up to 1 Tbyte !!) and has several analyzer functions, like CAN, USB, RS232 etc.. where it translates the captured 1's and 0's into readable text. It has a nice and fast zoom function, and you can give each signal a NAME.

just a cheap and handy tool....
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mikeb


Joined: 23 Nov 2006
Posts: 8344

PostPosted: Fri 06 Dec 2013, 07:56    Post_subject:  

Neat stuff.... used to use the beasties years ago at work which was fun but they were sooooooooooo expensive it was not something I would have considered to own personally.
I also noticed plugin scopes for the PC...anyone had experience of these? Instant digital storage scope for a few quid seems too good to be true Smile Thing is seeing waveforms brings the whole thing to life and would be good for the offspring.
I manage with just a multimeter now but its not the same.

mike
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Flash
Official Dog Handler


Joined: 04 May 2005
Posts: 11118
Location: Arizona USA

PostPosted: Fri 06 Dec 2013, 09:11    Post_subject:  

Volhout, how about a picture of the USB hardware itself? Don't forget to include the cables and cords, all nicely coiled into a heap. Smile
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