Arduino nixie v41 Operating Instructions Manual page 3

Description
The Arduino Nixie Clock is a beautiful mix of old and new, resulting in a high accuracy, low power clock
which will be a talking point in your home.
The clock has the following features:
Battery backed, temperature compensated, high accuracy clock. The accuracy is Accuracy ±2ppm
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from 0°C to +40°C. (Maximum 1 minute per year).
The battery life should be 3 years in normal use.
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Retains the date and time even when turned off (not just for a few minutes, but for as long as the
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battery lasts)
Leap Year Compensation Valid Up to the year 2100
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Based on the Arduino micro-controller: Easy to program an well documented.
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Open source hardware and software. Nothing is hidden in this clock.
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You may modify and load the software
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Low power consumption.
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Anti Cathode Poisoning (ACP) makes sure that the tubes will stay healthy for many years with no
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intervention from you.
All settings are stored in non-volatile memory. Once they are set, they are remembered forever, or
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until you change them again.
RGB back lighting allows you to set the the color of the back lighting to practically any color you
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desire.
Ambient light sensing, with automatic tube dimming, which sets the tube and LED brightness
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according to the light conditions. The tubes could be disturbing during the night if they are left at
full brightness.
Absolutely silent operation. Some Nixie clocks emit an irritating "buzz" or "hiss" which is especially
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annoying if you keep the clock in a bedroom.
Long tube life: The multiplexed display and automatic dimming used in this design extends the life
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of the tubes indefinitely. Some other designs run the tubes too "hard", and this causes a rapid
degradation in the useful life of the tube.
Automatic week day or weekend blanking, extends the life of tubes even further
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Automatic time of day blanking, can blank between a start hour and an end hour, on week days,
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weekends or every day
Configurable suppression of Anti Cathode Poisoning when the clock is fully dimmed. In the middle
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of the night, all the digits lighting up at full brightness could be disturbing. You can choose to stop
ACP when the clock is fully dimmed
The micro-controller can be reprogrammed using the ICSP interface provided on the board
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