Hello,
I’m looking at the data sheet for the Nicla vision and I don’t understand completely how the jtag pins could be connected to a 50 mil header without soldering as the pins are not exposed in a regular way.
Anyone have any links, images or more information about this?
In order to make all relevant information available to any who are interested in this subject, I'll share a link to the related discussion here, where one of Arduino's developers has responded:
Welp, tried to solder a 2.5 mm header to those pins, would not recommend. The pads loosened and now the pins can't be accessed anymore... 
Can't use the debug functionality on that board anymore then...
The technique demonstrated at the link above does not involve soldering. It relies on the fit of the Nicla Vision PCB between the rows of the header pins to produce enough pressure on the pad to get a reliable electrical connection.
It seems like the sort of thing that might require some wiggling and jiggling from time to time, but probably sufficient for temporary use during development or troubleshooting.
I know, I just didn’t have a header like that available, so I had to try something else.
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