开云体育

On Monday, May 25, 2020, 3:54:13 p.m. GMT-4, Larry Rothman <nlroth@...> wrote:

Since the F303 was a drop-in upgrade from the F072, all the pinouts remained the same.
I have attached portions of the H and H4 schematics - the SD card interface? from the uP is the same for both boards.
...Larry

? ? On Monday, May 25, 2020, 3:28:22 p.m. GMT-4, DiSlord <dislordlive@...> wrote:

On Mon, May 25, 2020 at 10:03 AM, Larry Rothman wrote:

? The Gekko version of the early nanoVNAs had the solder pads for an SD card
slot - look at my forum photo from almost a year ago.
I actually added a slot to mine but then sold the unit and bought a better
made one (no SD pads).
/g/nanovna-users/message/223
I have ordered an ST32F303 and I'm looking for the proper LCD panel so that I
can convert my H into an H4.
I will add an SD slot to the PCB as well.
...Larry

? ? On Monday, May 25, 2020, 12:50:54 p.m. GMT-4, DiSlord
<dislordlive@...> wrote:

? No for H need compile its own firmware, it have about 14kB free flash. Only
Fat32 and short filenames need ~10kB (but i don`t test this for H firmware)
Also H version not have SD slot on PCB board, need add it, but this difficult
for me (for my test).


?

If SD card on this board connected as on H4 board, possible compile firmware version for H vs SD Card support

I have ordered an ST32F303 and I'm looking for the proper LCD panel so that I can convert my H into an H4.

You should understand
1 - Most Display module for H4 (ST7796S driver) like this
Have 40pin connector
H version use ILI9341 module like this
Have 18 pin connector
Yes possible replace it, but ... i don`t know, you have to overcome many difficulties