开云体育

I just received my second NanoVNA H4. I then up dated the software to "20220831.bin" using the STM32 CubeProgramer.
I purchased this unit because it had an SD Slot in it and I thought it would work like the TinySA. However I have tried three different 32GB microSD cards and I can't save anything to any of them. I get a save failure every time. I am very disappointed on how this save feature is working. The rest of the unit seems to work great so I don't know what to do from here.

You might want to try a 16Gb card, lots of reported issues with the
higher capacity cards over the past couple years, Moving to a lower
capacity and all works OK.

-----------------------------------------From: fatraut@...
To: [email protected]
Cc:
Sent: Saturday January 21 2023 5:15:14PM
Subject: [nanovna-users] SD Problem #nanovna-h4

I just received my second NanoVNA H4. I then up dated the software to
"20220831.bin" using the STM32 CubeProgramer.
I purchased this unit because it had an SD Slot in it and I thought
it would work like the TinySA. However I have tried three different
32GB microSD cards and I can't save anything to any of them. I get a
save failure every time. I am very disappointed on how this save
feature is working. The rest of the unit seems to work great so I
don't know what to do from here.





Links:
------
[1] /g/nanovna-users/files
[2]
/g/nanovna-users/leave/11119600/4866111/1865567994/xyzzy

The firmware authors also mention that "fast" writing 32GB cards do not work.
--
Doug, K8RFT

If r93 is a 10 ohm resistor, try shorting r93.
/g/nanovna-users/topic/micro_sd_card_issue/94630098?p=