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Troubleshooting help please: NaN errors and others #64

@nikkipugh

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@nikkipugh

Hi, I'm helping a friend out by soldering up a couple of kits ahead of an event next week. This is my first time working with bGeigie Nano, but I'm familiar with Arduino and some of the daughter boards used in the kit. I've not got much programming experience.

One of the kits I've assembled seems to be working okay, but the other is behaving oddly and I'd appreciate some help identifying what's going on please.

Start-up screen:
bGeigie Nano 1.4.4
Battery=100%#-001
Mode = 25[unidentifiable]larm=-1CPM

Then in surface mode I get:

NAN uS/h
Mx=NANuS/h Ds=NANuS alternating with 45CPM NANBq/m2
21/10 08:10:28 60s [battery indicator]

In logging mode CPM and GPS seems to be working okay (I'm getting blips and the blue LED pulses too), but also getting NAN uS/h. (Also "60s" just to the left of the graphic battery indicator, which I've yet to find a reference to in the docs and isn't present on the reference unit I've got that's running v1.3.6)

On the micro SD card, file names are being prepended with a -, eg "-0011020.log"

The content of the log files mostly looks okay except for the negative device id.
header:

NEW LOG
format=1.4.4nano
deadtime=on

$BNRDD,-001,2021-10-20T09:01:06Z,29,3,2143,A,5403.2776,N,00246.1078,W,77.70,A,11,79*7A

Can anyone suggest what's going on? Does this seem like a software issue rather than a duff solder joint or similar?

I've been looking at what would be involved with reinstalling the firmware. There's a chance I might have a FTDI Friend around somewhere, but I'm getting a bit confused with GitHub and there not looking like there's a 1.4.4 uploader (mac)

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