Brent,
My NanoVNA has a couple of circuit pads at that location (VDD and BOOT0). When shorted together at power-up, they cause the NanoVNA to enter DFU mode for firmware update. I suspect your unit has a switch provided to provide that function without an added jumper wire.
--John Gord
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On Tue, Nov 3, 2020 at 07:05 PM, Brent W Baum wrote:
I'm a new user to the group. I did a search on the topic but was unable to
discover what the small momentary push button switch in the center of the
right edge of the nano VNA does. None of the online videos, etc. seem to know
this control is there. It doesn't seem to do anything when I press it. Any
ideas?
Thanks.
