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LaPOD: Low cost Logic Analyzer probe for MSO5k, DHO900 and more!

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ebastler:

--- Quote from: Tarloth on December 01, 2023, 05:42:23 am ---
--- Quote from: oliv3r on November 08, 2023, 01:04:00 pm ---I asked the admin to split of the thread, but no reply yet :(

--- End quote ---

Oliver, UK and eblaster !!!!

You took a thread from this forum that had nothing to do with your discussion and invaded it with impunity even though eblaster warned about it several times. YOUR DESIGN AND DISCUSSIONS correspond to another thread about to mimic the original POD with a faster LVDS comparator, here in this thread ANOTHER different design was being discussed, simpler, limited but cheaper in which your ideas and designs DO NOT apply. On top of that, you introduces a lot of confusion in this thread and it is no longer even easy to follow the versions when you filled the last three pages with vanilla connector arguments.

PLEASE, next time respect the other threads that have nothing to do with what you are like to discuss!

--- End quote ---

Next time you might want to ask ChatGPT to word your message. It tends to get the tone about right.

Yes, this discussion of a "proper", comparator-based logic probe has become bigger than Oliver originally expected. So what do you propose we do about it? Users cannot move parts of a thread to a new one; Oliver asked the moderators but they did not get around to it, or did not consider it worthwhile. So what?

As threads on this forum go, I think the past pages have been one of the more productive examples. Something actually gets developed, in a joint effort, with feedback on improvement ideas. Much better than the haggling we get in some other threads. And yes, the connector discussion is highly relevant in this context. Guess what? Using a standard ribbon cable with 50 conductors to the probe sucks.

If you are interested in the cheap solution, since all you want to probe is 5V and 3.3V logic: Buy a complete LA probe on ebay for $75 including cheap grabbers; problem solved.

Mechatrommer:
as long as discussion circling around somewhat evolution or improvement to the probe, i'm fine... btw, is there any clear diagram rev eng people made about what every single pin does on the MSO5000's 2x25 2.54mm pitch LA connection? (i guess should be the same/compatible with DHO900) all i've seen so far are finished diy probe product... what if i want to make my own LA probe? if there is diagram, i dont have to redo rev eng...

ebastler:

--- Quote from: Mechatrommer on December 01, 2023, 04:44:48 pm ---btw, is there any clear diagram rev eng people made about what every single pin does on the MSO5000's 2x25 2.54mm pitch LA connection? (i guess should be the same/compatible with DHO900)

--- End quote ---

See below, for example. And yes, it's the exact same pinout on the MSO5000 and DHO900. (The DS1000Z plus has a slightly different connector. Same signals, but more GND pins and hence 68 pins in total, I believe.)

https://www.eevblog.com/forum/testgear/rpl1116-active-logic-probe-pod-for-1000z-series-teardown/msg2419002/#msg2419002

EDIT: If you want to design your own probe, don't talk about it here or Tarloth will get mad at you...  ;)

Simon:
If you can find me a thread  that 10 pages in has stuck band on topic I will devise a medal for you!

ebastler:
@Tarloth -- you come into this thread complaining and shouting at us, then you follow up with two dissertations. You still have not answered my question in response to your initial complaint: What do you expect Oliver, UK or me to do with this thread now? Delete all our posts?

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