cheap, small logic analyzer

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#1
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DId a search for logic analyzers.  Last thread was 2013.

 

I'm thinking of this USB one from inno, listed on Amazon as the Inno Maker LA1010 USB for $79.

 

Any recommendations?  I want something small I don't need to lug around when I'm debugging away from my workbench.

 

EDIT: Oh, and I want to use on my Linux laptop.

Last Edited: Wed. Feb 5, 2020 - 02:02 AM
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Have you considered this one?

 

https://www.ebay.com/itm/IIC-SPI...

Ross McKenzie ValuSoft Melbourne Australia

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If you are ok with a bare board,  search eBay for Cypress CY7C68013A EZ-USB  Board

That's a HS-USB (480MHz) 56 pin MCU that can do logic capture.

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"Dare to be naïve." - Buckminster Fuller

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maybe 4-5 lines for now -- maybe more later ?

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valusoft wrote:

Have you considered this one?

 

https://www.ebay.com/itm/IIC-SPI...

Interesting, the LHT00SU1 USB Logic Analyzer looks to use the Cypress CY7C68013A as the engine too... but in a nice case.

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fyi, Cypress Semiconductor has that up to USB3 with a bit of programmable logic along with the data path controlled by an ARM9.

Though Windows only :

Cypress SuperSpeed Explorer Kit as a Logic Analyzer (Sysprogs)

 

"Dare to be naïve." - Buckminster Fuller

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valusoft wrote:

Have you considered this one?

 

https://www.ebay.com/itm/IIC-SPI...

 

$1.50usd!?  WOW.  I spent quite  bit more for my Saleae Logic 8.

 

JIm

I would rather attempt something great and fail, than attempt nothing and succeed - Fortune Cookie

 

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Atmel Studio6.2/AS7, DipTrace, Quartus, MPLAB, RSLogix user

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jgmdesign wrote:

valusoft wrote:

Have you considered this one?

 

https://www.ebay.com/itm/IIC-SPI...

 

$1.50usd!?  WOW.  I spent quite  bit more for my Saleae Logic 8.

 

JIm

 

Look again Jim. You quoted the price of the test leads. Here is what I am suggesting.

 

Ross McKenzie ValuSoft Melbourne Australia

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Ahhh!  Thats what happens when one does a quick glance as opposed to reading the friggin advert.

 

Even at $28.00usd, I paid a LOT more for the one I have

 

Jim

 

 

I would rather attempt something great and fail, than attempt nothing and succeed - Fortune Cookie

 

"The critical shortage here is not stuff, but time." - Johan Ekdahl

 

"Step N is required before you can do step N+1!" - ka7ehk

 

"If you want a career with a known path - become an undertaker. Dead people don't sue!" - Kartman

"Why is there a "Highway to Hell" and only a "Stairway to Heaven"? A prediction of the expected traffic load?"  - Lee "theusch"

 

Speak sweetly. It makes your words easier to digest when at a later date you have to eat them ;-)  - Source Unknown

Please Read: Code-of-Conduct

Atmel Studio6.2/AS7, DipTrace, Quartus, MPLAB, RSLogix user

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Who-me wrote:

If you are ok with a bare board,  search eBay for Cypress CY7C68013A EZ-USB  Board

That's a HS-USB (480MHz) 56 pin MCU that can do logic capture.

 

I got one of of those off Aliexpress for <$10 and used it for a couple years before I bought my DS1054Z.  It was well worth the money.

I have no special talents.  I am only passionately curious. - Albert Einstein

 

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I spent quite  bit more for my Saleae Logic 8.

Ah.  That means you helped pay for the software and development effort.
 

Thank you.

 

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The following seems to be a much more capability unit for the serious user & still at an amazing price:

https://www.ebay.com/itm/New-DSLogic-Logic-Analyzer-Module-USB-Based-400M-Sampling-Rate-16-Ch-f-Debugging/312795746016?hash=item48d4144ee0:g:6TUAAOSwKKZdmvth

 

read the details at the bottom...they give a lot of information

 

this has a choice  of 2 models (pay attention to whether you get the 256meg of onboard memory or not)

https://www.ebay.com/itm/DSLogic-Logic-Analyzer-16-Channels-400M-Sampling-USB-based-Debugging/323821870352?hash=item4b65499d10:m:my921NzzVya8fYGGsAcM2vw

When in the dark remember-the future looks brighter than ever.   I look forward to being able to predict the future!

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jgmdesign wrote:

$1.50usd!?  WOW.  I spent quite  bit more for my Saleae Logic 8.

 

Same here, BUT, when I broke it, the customer service was second to none.

#1 This forum helps those that help themselves

#2 All grounds are not created equal

#3 How have you proved that your chip is running at xxMHz?

#4 "If you think you need floating point to solve the problem then you don't understand the problem. If you really do need floating point then you have a problem you do not understand." - Heater's ex-boss

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I also bought a genuine Saleae but have not broken it... yet. Also bought the $10 jobbie. Haven't broken it either.

Ross McKenzie ValuSoft Melbourne Australia

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MattRW wrote:
I want to use on my Linux laptop

Sigrok is the software which always seems to accompany the "get a cheap one off ebay" recommendations ...

 

https://sigrok.org/

 

It is open-source and available for many platforms - including Linux & Windows:

 

https://sigrok.org/wiki/Downloads

 

 

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I bought a Saleae Logic-8 some years ago.   The original 8-channel 24MS product.

The Saleae service is excellent.   They replaced the Logic-8 when it failed.

I have bought clones too.   If they fail,  I buy another one for $10 (or whatever)

 

The Saleae Software is excellent.   It runs on Windows, Linux or Mac.   It operates with genuine Saleae or with the Ebay clones.

 

I have never had much success with the Sigrok Software.   Sigrok runs on Windows, Linux or Mac.   Many people use Sigrok.

 

I have never wanted more than 8 channels but there are times when I would like 100MS.

 

In practice,  you use a Logic Analyser to view the timing sequence.  i.e, which signal wiggles before another and at what time.

So for debugging my programs it is easier to slow down the ARM (or AVR) until I can view the timing sequence with 24MS.

 

Most problems are down to software timing and not the hardware.

If the project works correctly at reduced clock speed but fails when you increase speed,  you have to examine the hardware edges with a scope.

 

David.

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david.prentice wrote:
I have never had much success with the Sigrok Software

To be honest, neither have I.

 

But I've only tried once, and that was with a rather "offbeat" application (not logic analyser):

 

https://www.avrfreaks.net/forum/using-sigrok-pulseview-baylibre-acme

 

It seems to suffer from a common open-source problem: open-source software is written & published by software developers; software developers typically don't like doing documentation. 

And it's seldom (if ever) a good thing when the documentation is written by the same person(s) that developed the code.

 

frown

Many people use Sigrok.

Aparently.  User @Paulvdh has been a major proponent here

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Last Edited: Wed. Feb 5, 2020 - 09:58 AM
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I have one of these: https://www.ebay.com/itm/Mini-16... (and also an eight channel version) both of which work well with the Saleae software under Linux. The Sigrok software recognises both units correctly but won't attach to either.

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I have one of cheap 8 channel ones:

 

 

It's enough for my needs. I avoided to buy one labeled "Saleae Logic" and use the Sigrok software, I've done enough piracy when I was young, trying to stay clean nowdevil

Here is a good (but long) analysis: https://youtu.be/dobU-b0_L1I

And another one, shamelessly pirating everything: https://youtu.be/rR5cEFRO9_s

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avrcandies wrote:

The following seems to be a much more capability unit for the serious user & still at an amazing price:

https://www.ebay.com/itm/New-DSLogic-Logic-Analyzer-Module-USB-Based-400M-Sampling-Rate-16-Ch-f-Debugging/312795746016?hash=item48d4144ee0:g:6TUAAOSwKKZdmvth

 

They say the software is Windows open source, but I didn't find a reference.  Will need to hunt.   It's a motorcycle parts company in Hong Kong.

I will do some digging.

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barnacle wrote:

I have one of these: https://www.ebay.com/itm/Mini-16... (and also an eight channel version) both of which work well with the Saleae software under Linux. The Sigrok software recognises both units correctly but won't attach to either.

 

"Does not ship to the US."

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I have ordered the Inno-Maker.  I will see how it goes.  Mostly because I will get it soon.

 

The DSLogic also looked attractive (Hong Kong motorcycle parts place).

 

The Saleae seem popular but I'm not willing to shell out that kind of money (yet).

 

Thanks for all the input.

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westfw wrote:

I spent quite  bit more for my Saleae Logic 8.

Ah.  That means you helped pay for the software and development effort.
 

Thank you.

 

Some of us used the generic hardware with open source tools like Sigrok & OLS.

 

 

I have no special talents.  I am only passionately curious. - Albert Einstein

 

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If you have a USBasp with the USART pins connected, you could try my 2-channel 2.4msps hack.

http://nerdralph.blogspot.com/20...

 

I have no special talents.  I am only passionately curious. - Albert Einstein

 

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david.prentice wrote:

I bought a Saleae Logic-8 some years ago.   The original 8-channel 24MS product.

I have bought clones too.   If they fail,  I buy another one for $10 (or whatever)

 

The Saleae Software is excellent.   It runs on Windows, Linux or Mac.   It operates with genuine Saleae or with the Ebay clones.

Same here, so I guess I too helped support the SW dev.  link: https://www.saleae.com/

Jim

edit: added link to Saleae.com

 

Click Link: Get Free Stock: Retire early! PM for strategy

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Last Edited: Wed. Feb 5, 2020 - 04:56 PM
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Not so cheap (£200), but there's also this:

 

 

https://uk.rs-online.com/web/p/processor-microcontroller-development-kits/1368070

 

And this - based on the 'Beagle' boards:

BeagleLogic is a 100Msps logic analyzer that runs on the BeagleBone including BeagleBone Black, Green and Green Wireless.

The core of the logic analyzer is the ‘beaglelogic’ kernel module that reserves memory for and drives the two Programmable Real-Time Units (PRU) via the remoteproc interface wherein the PRU directly writes logic samples to the System Memory (DDR RAM) at the configured sample rate one-shot or continuously without intervention from the ARM core.

 

https://beaglelogic.readthedocs.io/en/latest/

 

EDIT

 

This article includes a comparison of the Beagle Logic to Salae and a $20 "Open Logic Sniffer":

 

https://hackaday.io/project/4395-beaglelogic

 

 

And here's the Open Logic Sniffer:

 

http://dangerousprototypes.com/docs/Open_Bench_Logic_Sniffer

 

Top Tips:

  1. How to properly post source code - see: https://www.avrfreaks.net/comment... - also how to properly include images/pictures
  2. "Garbage" characters on a serial terminal are (almost?) invariably due to wrong baud rate - see: https://learn.sparkfun.com/tutorials/serial-communication
  3. Wrong baud rate is usually due to not running at the speed you thought; check by blinking a LED to see if you get the speed you expected
  4. Difference between a crystal, and a crystal oscillatorhttps://www.avrfreaks.net/comment...
  5. When your question is resolved, mark the solution: https://www.avrfreaks.net/comment...
  6. Beginner's "Getting Started" tips: https://www.avrfreaks.net/comment...
Last Edited: Wed. Feb 5, 2020 - 05:12 PM
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ki0bk wrote:
david.prentice wrote:

 

I bought a Saleae Logic-8 some years ago.   The original 8-channel 24MS product.

I have bought clones too.   If they fail,  I buy another one for $10 (or whatever)

 

The Saleae Software is excellent.   It runs on Windows, Linux or Mac.   It operates with genuine Saleae or with the Ebay clones.

I bought the original 16 channel Saleae many years ago.  I dont think I have ever used more than 5 at once, but the instrument and software have been flawless.  They are great folks.  I munched up some of the clips being clumsy and emailed them to buy some more and they sent me a bunch complimentary.  I emailed back that I would like to come and see their operation since it is nearby and one of the guys emailed back that it would be best to come after 6:00 PM as then most everybody is gone, but I never followed up on it.  I think the company has less than 20 people.

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awneil wrote:

And here's the Open Logic Sniffer:

http://dangerousprototypes.com/docs/Open_Bench_Logic_Sniffer

 

Interesting, tho I see the PC link is only FS-USB, which means any fast captures need to fit into the FPGA RAM.

A plus side of using a FPGA, is they could store edge-timing captures, to give high precision at low sample rates and ease the pressure on the slow USB link.

 

The modules based on Cypress CY7C68013A , ( or USB3 Cypress SuperSpeed Explorer Kit as a Logic Analyzer) use 480MHz USB or faster..