Nixie Tube Clock ‘Elite’
Issue 3 (25 July 2018)
www.pvelectronics.co.uk
- 40 -
10. PIR MOTION SENSOR
The clock has a 3.5mm Jack Plug socket for connection of our PIR Motion
Sensor Accessory, available separately as a quick – build kit. This useful
accessory helps save tube life and power by powering down the clock
when it senses the room is empty. The sensing range is typically up to
12 ft (3.5 metres)
When installed and configured (configuration parameter 17), the sensor
will sense motion in the room, and switch off the High Voltage generator,
tubes and RGB LEDs when the PIR time period has expired.
Configuration Parameter 17:
0 – No PIR installed (default)
1 – 15 seconds
2 – 30 seconds
3 – 1 minute
4 – 2 minutes
5 – 5 minutes
6 – 10 minutes
7 – 15 minutes
8 – 20 minutes
9 – 30 minutes
It is important to remember that the function does not override Night
Blanking and Master Blanking, so when the clock is in Night Blanking or
Master Blanking, no amount of jumping around in front of the sensor will
light the tubes! If you are using the PIR motion sensor, the Night
Blanking and Master Blanking periods are rather redundant, so it is
recommended to not use these if you have the PIR installed.
The suggested initial PIR period is 10 minutes (Config 17 = 6).
