Gemini Two Tube Clock
24
Update #1 (21
st
May 2019)
www.nixology.uk
Normal Operation
Once operating, the clock will sync time with an NTP time source and display it
on the two tubes as a sequence of HH, MM, then several consecutive SS. This
sequence repeats continuously. Please note that it can take over 5 minutes to
sync NTP time once connected to your WiFi after initial power up.
During normal time display, the LED colour is
BLUE
Shortly after 30 seconds past the minute either the date or the temp+pressure
will be displayed
–
the data being displayed alternates each minute.
The Date is displayed as a sequence of DD, MM and YY. The date display is
accompanied by a change of LED lighting colour to
ORANGE
The Temperature is displayed in degrees Celsius as TT whilst the LED changes to
RED
The pressure is displayed as PP then pp where PP is the first two digits and pp
are the last two digits of the pressure whilst the LED changes to
GREEN
eg.
A pressure of 1014mb
would be displayed as ‘10’ then ‘14’.
A pressure of 998mb would be displayed as ‘09’ then ‘98’
The clock is active between 06:00 and 21:00. Connection of a PIR overrides
these times. The PIR activation period is set to 1 minute between 21:00 and
06:00, it is set to 5 minutes between 06:00 and 21:00.