Do you know of a small serial data logger that just logs serial data without interaction?
I would like to put it on a featherwing protoboard for debug purposes. Setting the loghandler up for Serial1 on a Boron, B523, Argon … and connect that to a logger module that just logs the data in a huge circular buffer without needing any interaction, for later retrieval.
There is a single line text file that you put in the root folder of the MicroSD card which handles all the configuration. So, no commands needed to start logging.
I use these in a couple counters where there is zero cell signal (except ahem - Verizon!) and they have proven quite reliable. I am hoping the cellular coverage picture improves before they wear out.