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Cheap logic analyzers?  


YurkshireLad
(@yurkshirelad)
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Joined: 3 months ago
Posts: 225
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I find myself wondering if I should pick up a cheap logic analyzer, to help learn about I2C and also to learn about the various sensors I have. Because I'm a true beginner hobbyist, I obviously wouldn't want to spend too much on this, so I stumbled across a couple of options. Are either of these worth considering?

https://abra-electronics.com/test-equipment-tools/test-instruments/logic-analyzers/t-la-24m8ch-virtual-oscilloscope-logic-analyzer-module-8-channel-24mhz.html

https://abra-electronics.com/test-equipment-tools/test-instruments/logic-analyzers/lht00su1-virtual-oscilloscope-logic-analyzer-data-logger-frequency-generator.html  

 

Thanks


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76plus
(@76plus)
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Joined: 3 months ago
Posts: 1
 

I purchased an cheap and affordable logic analyzer from China.  I have used it a couple of times and have found that despite it is a little basic when compared to professional analyzers which I worked with 20 years ago on the job, it does give you reasonable insight to data signal flow.  I wouldn't recommend this item for trouble shooting a complex signal for analysis but for a basic visual understanding of data I/O of Arduino interfaces it's more than adequate.  What really makes this cheap test equipment great and a bargain is the free / low cost software which is available to analyze and display the signal. The analyzer interfaces with your computer's USB and the software displays the data signal on your computer screen. Nice graphics in color to distinguish channels and time. Some included software tools to further explore signal pattern.

Affordable, easy to use, ideal learning tool, reasonable price.

https://www.aliexpress.com/item/2020974930.html?spm=a2g0s.9042311.0.0.27424c4dxdKMIQ

Hope my opinion gives you some insight.

Search YouTube " Logic Analyzer " there are many videos which you may find helpful and informative.

Syd


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DroneBot Workshop
(@dronebot-workshop)
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Joined: 2 years ago
Posts: 939
 

@yurkshirelad  @76plus

I've been curious about these as well, by looking at the specs my thought is that the limiting factor would be the maximum frequency they can work at. They seem to top out at about 16-20 MHz, which would be fine for an Arduino AVR board, but newer boards like the ESP32 run at higher clock frequencies and (I suspect) higher data-bus frequencies.

But you can't argue that they are a bargain, might be worth getting one just to see if it has any practical use. Even if it is just more as a learning tool than a proper diagnostic instrument.

😎

Bill

"Never trust a computer you can’t throw out a window." — Steve Wozniak


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