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Jerry,
The original Nanovna from last year and the H version are all essentially identical and can use any Nanovna or Nanovna-H firmware from ttrftech, Hugen or DiSlord.?
The H4 has different LCD drivers and memory layout so H4 FW will only run on H4 hardware.?
You can't brick the H or H4 and after the first couple of times flashing, it becomes a simple excersise.?
... Larry



On Sat, 8 Aug 2020 at 9:56 PM, Jerry Gaffke via groups.io<jgaffke@...> wrote: Christos,

Thanks for that comment.

I had seen the trftech firmware, but the photo at the top showing edy555's kit
made me think it might not be appropriate for Hugen's version.

Looking further, there's this toward the bottom of? ?
? Authorized Distributor? Nooelec? ? Switch Science(ja) NanoVNA-H NanoVNA-H4
? Credit? @edy555
? Contributors? @hugen79? @cho45? @DiSlord

Following the distributor links, it appears to be Hugen's adjustment to the design, including the -H4.
I had thought the nanoVNA-H4 took slightly different firmware to deal with the larger display,
is that not the case?

Good to see Hugen, cho45 and DiSlord all listed as contributors.


Questions:

1)? What differences to expect between this code:?
and Hugen's code:? ?

2):? What different flavors of hardware can the above firmware choices work on?


Well, I guess I'll just try burning in the ttrftech code that Christos pointed me to.
At worst, I get a $50 education in what not to do.

Jerry, KE7ER