One thing I like to do is monitor serial / usb ports for incoming and outgoing messages, and throw those to a logfile (have done both centralized and per-device). Would be great if there was some generic interface that could be plopped down for log communication so you could aggregate logs from an entire workstation into one place, as I’m kinda doing right now, in main PLR.
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Does PyLabRobot’s logging at LOG_LEVEL_IO do what you want?
I updated this doc file a little while ago 
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see also Protocol Validation using Stored Logs — PyLabRobot 0.2.1 documentation for playing back logs and integration testing protocols
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