Blub clock

319.00333.00

The Blub is a single-tube nixie clock – all digits of the time are rotated on a single digit display. It sounds complicated, but it works surprisingly well. The time is kept internally by high accuracy real-time-clock chip.

Blub Nixie Clock

The Blub is a single-tube nixie clock – all digits of the time are rotated one by one on a single nixie tube. It sounds complicated, but it works surprisingly well. The time is kept internally by high accuracy real-time-clock chip.

Blub function illustration
Blub showing time 02:26

The manufacture of nixie tubes and nixie clocks in low quantity is an expensive task. With the Blub, I want to arrange the fabrication so we can make the clock as affordable as possible, without cutting corners. Thanks to the work we put into the preparation of the production, we can spend less time with the actual building of the electronics and troubleshooting and focus more on the development of the nixie tubes in production – and this is the main goal of our little business.

As affordable as possible without compromising on the function.

To optimize the price tag while keeping the quality, we need to manufacture this clock in higher quantity. Higher quantity allows us to spread the fixed costs to more customers. One design flaw in the big amount of clocks would mean a serious problem as the replacement costs would be high. So the whole electronics design of the Blub clock was developed with the aspect of function, longevity, and reliability kept in mind.


 

Electronics

The heart of the clock is made of an Atmega328p microprocessor paired with DS3231 high accuracy real-time clock for time-keeping (DS3231). This setup makes the clock a fully standalone unit without the need for external time synchronization. The user interface is created by two push buttons on the back of the clock. Besides the buttons, the Blub clock contains a mini USB connector that is used as a connection to a power supply and offers advanced configuration options over a serial line.


Physical appearance

The clock case is milled of a solid aluminum block, sandblasted with fine glass beads, and finally anodized. The same material finishes we use for our Zen and Puri clocks. It looks amazing, it is resistant to scratches and also the dust is less apparent on it.

Blub case
Blub case

Testing

For the Blub clock, we’ve stepped up the final quality inspection procedure – we developed a semi-automated testing fixture. The development of this new tool was probably more complicated than the development of the clock itself – but in the long term, it will pay off in the reliability of the electronics passing the test procedure. It allows us to test all necessary electrical parameters as well as software functions and features. All this helps us to achieve higher consistency in the quality of the product we deliver to our customers.

Blub test fixture
Blub test fixture

Packaging

Having a batch of functional and tested clocks for sale is one part of the story – getting them to customers is a whole other thing. Our packaging uses a metal can be designed for a paint (durable and low-cost thanks to mass production) with custom made foam inserts. Reliable, good looking, inexpensive. Just use a screwdriver to open it!

Blub packaging detail
Blub packaging detail

Lifespan

Single tube nixie clocks are special in one aspect – the character of nixie tube operation is very close to the optimal operation – individual digits are cycled regularly. There are no situations when the nixie tube would be showing only one digit for prolonged periods of time (e.g. like the first tube in a 6-digit clock). This feature allows the nixie tube to avoid cathode poisoning and achieve maximal theoretical lifespan – which should be, according to our calculations, more than 15-20 years.


Colors and materials

The Blub clock can be purchased in several colors and materials. The clock body is always anodized aluminum – the color options are silver and black. The nixie tube base can be made of anodized aluminum, polished stainless steel, or polished stainless steel with a golden look. The golden look is TiN coating – it has superior mechanical/chemical resistance. All the materials used are stable over time and don’t tarnish.

  • black (black anodized clock body + black anodized tube base)
  • silver (silver anodized clock body + silver anodized tube base)
  • black – stainless steel (black anodized clock body + polished stainless steel tube base)
  • black – gold (black anodized clock body + polished stainless steel tube base with golden coating)
  • silver – stainless steel (silver anodized clock body + polished stainless steel tube base)

Technical specification

2020

Power consumption
1.25W maximum
Clock voltage
5V DC
Power adaptor voltage
90-240V AC
Current
250mA
Power connector
Mini USB
Weight of the clock
345g
Full package weight
850g
Height of the clock
150mm
Diameter of the base
85mm
Power adaptor plug
Matching the customer's country

Warranty

Our goal is to make products that last. Therefore we provide 10 years warranty for our clocks and nixie tubes.
Learn more about warranty