I got the fully assembled and pre-configured "kit" for a little "science project", just configured/added the Zero's WIFI setup to the boot partition and started the "Geiger" server up -- worked right away. Easy to use great looking web front end! Love it! -- Beside a minor issue / question to be figured out -- see below.

Regarding the "buzz", at startup I noticed it barely (new version better ???) -- later pretty much silence. I also 3D printed the recommended case for HV protection very advisable I'd say ;)

What I did, may be helpful for Pi Zero Newbies ;)

created this file in boot:

/boot/wpa_supplicant.conf

with the WifI configuration -- no monitor needed to be hooked up at all!
-------------
country=US
ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
update_config=1

network={
scan_ssid=1
ssid="YourWiFiSSID"
psk="YourPasswordInClearHere"
}
---------------

Then I can ssh as pi into the tiny box via "ssh pi@raspberrypi.home" from a linux machine for example with the default raspberry password.


And then I also added a script and a cron tab entry to make the server autostart at boot time without further interactions.
cat ~/start-gi.sh
-----------
#!/bin/sh
cd /home/pi/pi-zero-geiger-counter/pi-software
./pyGIserver.py &
-----------

then as pi user call "crontab -e"

and add at then end of the file:
@reboot /home/pi/start-gi.sh

To verify the pyGIserver running after a restart -- or just open a web browser and see if it's up http://raspberrypi.home:8080.

pi@raspberrypi:/boot $ps aux | grep GI
pi 906 2.7 5.2 103384 23456 pts/0 Sl 02:21 1:21 python ./pyGIserver.py


PS: May be some one has an idea, I had troubles with some USB battery packs I wanted to use operating it from, while it works fine on my computer's USB ports and phone charger providing USB power. The Pi0 started always up just fine. But I eventually got I2C IO Errors when attempting to start the pyGIserver.py when on on a USB batterypack??? Any ideas, fully charged packs, even a quite large ones -- no luck :( Any clue?

Here is the scenario I found with all my battery packs:

2019-12-21 01:36:02,807 INFO pyGI.geigercounter: Starting geigercounter
Traceback (most recent call last):
File "./pyGIserver.py", line 25, in <module>
geiger = geigercounter.Geigercounter(total=last_total, total_dtc=last_total_dtc)
File "/home/pi/pi-zero-geiger-counter/pi-software/pyGI/geigercounter.py", line 58, in __init__
self.reset()
File "/home/pi/pi-zero-geiger-counter/pi-software/pyGI/geigercounter.py", line 65, in reset
bus.write_byte(i2c_addr, 0x00)
IOError: [Errno 121] Remote I/O error

I bought one of these for an art project and was able to integrate it into my project with a bit of digging through the source files.

I purchased this geiger counter over the others as I was more interested in the local web server interface.

Its very nice and easily accessible from the local network.

Unlike the first review. I too would have oriented the pi this way (upside down) as it makes for a nicer cleaner look. And gives better access to the ports.

Although when I put my ear close I can hear a buzz, I have this on my window sill in my lounge room and cannot hear it from more than around 30cm away so no problems there.


Notes for future DIY'ers:

1: Make sure you install the Raspberry Pi Zero header UPSIDE DOWN. So DONT purchase a Pi zero with the header already soldered as its on the wrong side.

2: The whole thing can be powered by the raspberry pi power port rather than the barrel plug. Which is what I did as it was much easier.

3: I designed a case for this kit which can be freely printed from thingiverse. https://www.thingiverse.com/thing:3811286


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