Products > Test Equipment
Sigrok & $10 Logic Analyzer from Ali Express
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Bicurico:
Yeah I realize that and appreciate Saleae.  But like you say this is a clone of a discontinued model and I'm using openSource software with it.  Also I am not into electronics to make any money but am a poor hobbyist.  I don't make any money with it.


--- Quote from: Bicurico on November 28, 2022, 09:30:24 am ---I am not judging, I don't work for Saleae, but I think this aspect should not be forgotten.

--- End quote ---

Btw, of all the PC's you've bought in the past did you feel any guilt?  Because it was IBM's design and people starting cloning them all the since the IBM PC XT.

I don't think the comparison with IBM is in any way relevant or comparable.

Nope, the software is entirely made by Sigrok (fx2lafw).
Those MCUs are rom-less, they load the firmware either from external eeprom (not this case) or from the usb port (Pulseview loads it).

Still, it was Salaea's idea to use the MCU to build a logic analyzer. That was shamelessly stolen.

I don't care nor judge anyone going that route and I am not a saint, either. As mentioned, just wanted to point it out.

Fungus:

--- Quote from: JenniferG on November 28, 2022, 09:00:39 am ---I read that some 4 channel scopes serial decoding is almost useless.

--- End quote ---

"almost"  :)



--- Quote from: JenniferG on November 28, 2022, 09:00:39 am ---But maybe I won't need 4 channel scope at all if I get this logic analyzer.

--- End quote ---

The price difference between 2 and 4 channels isn't much these days, I'd get 4 channels if possible.

But if not: A modern 2-channel DSO will still be a huge step up from the Tek 2225.
Fungus:

--- Quote from: DavidAlfa on November 28, 2022, 06:46:54 am ---A scope isn't a proper machine to decode data.
Perhabs for few bytes, seeing a single event, but not for large transfers.
That cheap clone will be more useful for that,

--- End quote ---

But a cheap logic analyzer won't show you if the data signal is malformed or not.
DavidAlfa:
Sure it will, showing a framing error when running a decoder.
DavidAlfa:

--- Quote from: Bicurico on November 28, 2022, 10:50:55 am ---Still, it was Salaea's idea to use the MCU to build a logic analyzer. That was shamelessly stolen.

--- End quote ---

Maybe you wanted to mean: Saleae took the idea from Cypress docs and made an incredible profit from it (from $5 to $149, not even Apple got so far lol)

https://www.infineon.com/dgdl/Infineon-AN66806_Getting_Started_with_EZ-USB_FX2LP_GPIF-ApplicationNotes-v09_00-EN.pdf?fileId=8ac78c8c7cdc391c017d0735e06f5911
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