that it is not connected to a Wi-Fi
network, and create an Ad-Hoc
network for you to connect to. To do
this, use your smartphone; tap on
settings, then Wi-Fi, and then join the
Next, open the browser on your
smartphone and go to the
hostname.local address. For example,
my host name is wugNutsVolts, so I
type http://wugNutsVolts .local in
the phone’s browser. Make sure you
add the dot local (.local) at the end
of the name as shown; this tells your
phone it’s a multicast DNS address
and it will only look on the local
network for it.
Once your phone connects, you
will get the “Success!” message
shown in Figure 7. Tap on the
“hamburger menu” (the three white
bars in the upper right corner) and
select Wi-Fi Setup. You’ll be
prompted for the admin password;
type in Limestone5$. Now the screen
will show you all the Wi-Fi networks (Figure 8) the gauge
is in range of. You can tap on Change Wi-Fi Network to
select one. Select your Wi-Fi network, type in a password,
and tap on the save and activate button.
Back on the alphanumeric display, you’ll see status
messages while the gauge tries to connect to your Wi-Fi
network. When successful, you will
see “Success” scroll across the screen
and your gauge will reboot. We now
need to configure the weather gauge
with your Weather Underground key
and weather station.
The weather gauge’s web
interface allows you to customize the
weather gauge to your environment.
You can set the gauge face
brightness, the alphanumeric display
brightness, sound, and also when you
want it to be quiet in the evening so
it won’t beep while you’re sleeping.
The only two things you must
change are the weather underground
API key and the personal weather
The API key is how the Weather
Underground controls access to their
API. Every time the weather gauge
makes a call to their API, it must pass
a valid API key. These calls are
metered, and if everyone used the
same key, it would go past its budget
and be shut off.
I’ll walk you through getting an
API key and picking a personal
weather station close to you. We will
then enter these numbers into the
weather gauge’s web interface.
At this point, you’ll need to set
up a developer’s account on the
Click on Purchase Key and you
will see your 16-character key ID.
Make a note of the key. We will need
to tell our weather gauge to use that
key for accessing the weather data.
Next, we need to get a station ID
to pull the weather telemetry from.
You can leave it at the default if you
want to see the weather in my
backyard, but I bet you’ll want to find
a weather station close to your home.
Go to https://www.wunder
overview.asp and in the Weather
34 January 2018
■ FIGURE 7.
■ FIGURE 8.