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Please suggest a good cheap USB 16CH logic analyser

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Ian.M:
Please suggest a good cheap USB 16CH logic analyser, mostly for 5V work on legacy 8 bit systems.  I intend to use Sigrok Pulseview and would prefer not to infringe Salae (or anyone else)'s firmware copyright.  Some pulseview-compatable analog capability would be nice but is not essential.

Gandalf_Sr:
I've struggled with this one and ended up with a real Saleae Logic 8.  I bought cheap clones and wasted a lot of time on them and their crappy software.

There are 2 aspects to logic analysis (in my world anyway):
1. Are the signals correct from an amplitude, timing, and noise perspective?
2. What is the actual data traffic running on the bus?

1 is best met by a mixed signal scope that has a 16-channel analyzer (like a Rigol MSO2072A or better).
2 once you know that the signals are OK, this is the real problem.  Saleae does an awesome job in their ease of use and capture of data but has the major (almost unforgivable) missing feature that you can't send data out over the bus; to get around this, I own a Bus Blaster and a Bus Pirate but the Pirate (vn 3.6 or 3.8, don't bother with 4.x) gets most use.  The interface for the Bus Pirate is a serial terminal window (Teraterm recommended) and it can be made to do some really useful stuff but there's a learning curve and the documentation is all over the place.

I went with Saleae Logic rather than Logic Pro because I don't need to look at buses running over 50 MHz but, if you do, then the (way more expensive) Logic Pro is perhaps worth consideration.

Some will suggest that you can buy an old logic analyzer on eBay, not sure what this will achieve other than take up a lot of bench space.

Gyro:
There are cheap clones of the original Salaea logic 16 available on ebay eg. https://www.ebay.co.uk/itm/Mini-Saleae-16-Logic-Analyzer-USB-100M-Max-Sample-Rate-Support-1-2-10-Software-U/163266339370. There was no analogue support on the original one.

Generally they use a different FPGA from the original genuine one and do not rely on the Saleae downloaded bitmap. Most of them are supported by Sigrok Pulseview.

The sigrok supported devices page shows the internals and f/w details.


P.S. They don't have the switchable input threshold of the original - they're 3v3 with 5V tolerance.

ptricks:
What do you consider cheap ?
to avoid infringement  get the ones that have open source firmware. 
16 channels really drives up the cost because you usually are going to see an fpga involved.
I'm working on designing one that uses one of the cypress PSOC chips so it is really fast, the chip handles everything from capture to decoding,  the boards would cost probably under $20 but it is still in design phase and it will not support 16 channels , just 8.

snoopy:
I bought one of these. Pretty good spec and memory depth ;)

https://www.aliexpress.com/item/Kingst-LA5016-USB-Logic-Analyzer-500M-max-sample-rate-16Channels-10B-samples-MCU-ARM-FPGA-debug/32774297984.html

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