To anyone who tinkers with digital electronics and micro-computers, a logic analyzer is a great tool to have. Unfortunately they used to be quite expensive. Nowadays … no more. This tiny, 8 channel, 24MHz sample rate, USB module can be had for as little as €4,- from e.g. Aliexpress.
Combined with the free open source ‘sigrok / pulseview’ software it makes for a very capable and fun to use logic analyzer that anyone can afford. Downloads are available for many platforms: https://sigrok.org/wiki/Downloads
The video shows how to get this duo to work as well as some of the features of the software.
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rudysmodelrailway 
This is indeed a very nice tool Rudy. What else do I need from Ali to connect these channel wires directly to e.g. a digital model railroad?
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Posted by Bert Caus | October 30, 2017, 10:22Can’t connect the module to DCC directly … first have to bring the voltage level down to TTL levels 0-5V. The optocoupler circuit as shown onthe software page canbe used to conject the DCC to an Arduino, and to connect to the logic analyzer.
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Posted by RudyB | November 2, 2017, 22:08See the software page for the schematic of the opto-coupler circuit you need to connect DCC to an Arduino.
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Posted by RudyB | November 9, 2017, 11:23Rudy, It would be great if you could share your expertise with Sigrok and provide them with a DCC protocol analyzer entry in their Pulseview analyzer. Here’s the link on how to get it done…. https://sigrok.org/wiki/Protocol_decoder_HOWTO You probably don’t need the additional work but it would benefit a lot of us. I’m looking to analyze MTHs’ DCS protocol also but lack the expertise.
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Posted by Jerry Silver | May 15, 2018, 18:22