Nixie Tube counter

[Derek Schuetz]

Hi Everyone

I want to make a 2 Digit Nixie Tube Counter that is battery powered with 3 buttons (+1,-1,Reset). pretty much want to create the same idea as below but i would design a case and condense it down, 

I am digging around to try and find a guide to follow. I have zero experience in this whats so ever, but this seemed like an easy project to start with.

What i am assuming I could do I is take an arduino project for a MTG life counter such as this (https://cerkit.com/2018/09/16/building-a-magic-the-gathering-life-counter-with-arduino-and-max7219/) and replace the two digit segment displays with 2 Nixie tubes. what i am hitting for a roadblock is what exactly do i need to power and wire them up with a battery and only do 2 digits rather then a clock. 

I have currently

IN-17 Tubes

Arduino Micro

Things I Think I need

https://www.shop-tes.com/1363-hvps-vertical-high-voltage-low-noise/ (only power supply i can find that seems to step up low voltage to where i need it if you have some other suggestions let me know)

3.7V Lipo

Lipo Charging circuit

Nixie drivers (link to some would be awesome i see so many options not sure what would be best in terms of price and speed of shipping)

I am not sure what am missing and is there maybe already out there a 2 digit socket board for IN-17 that i could use? And then the next step after sourcing everything would be how to wire it to the project i had linked above.

thanks so much in advance hopefully this will be a good kickstart into the world of arduino and nixie tube projects

[martin martin]

That's a cool kit!

I really like the little HV booster you found too

Keep us updated...

~

mcve...@gmail.com

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[Paul Andrews]

You don’t say what Arduino board you will be using, but you will will likely also need a boost converter to give you 5V From the lipo. This charger from adafruit will give you both the charger and the boost converter : https://www.adafruit.com/product/2465

[Paul Andrews]

There are several options for driving the nixies. One that will work well is the HV5812. It works at 5V and has exactly the number of outputs you need. You can drive it from an Arduino using the SPI library. It will need an 80V source, but that is easy to provide with either a simple resistor divider or a zener diode.

[Mark Moulding]

For your application, you'll of course not be using the MAX7219.  Since you only need two digits, I think the easiest way would be to use two a couple 74141 BCD-decimal decoder/drivers, with the inputs directly connected to one of the Arduino ports.  The logic would be extra-simple, since there would be no multiplexing on the outputs, and the two-digit value could just be converted to BCD and dumped directly onto the output port (perhaps being inverted).

The 74141 chips might be a bit difficult to source, but the Russian equivalent K155ID1 is readily available on eBay, and is cheap - This seller has a set of six for nine bucks (plus shipping), and is in the USA, so the current long shipment times from eastern Europe would be avoided.

~~
Mark Moulding

[Derek Schuetz]

Thanks everyone for the replies so I ended up with this

K1551D1 drivers
Seeeduino XIAO
3.7v to 5v booster/charger
600 Mah Lipo
The 3v to 200v booster board
IN-17 tube
Tactile buttons

But I came across another way to do this by just using 2 10 position Rotary switches. Anyone had experience trying this out and recommend a good rotary switch I found one on eBay just need to verify it goes full 360 rotation and I got 2 on amazon just to test. Wiring seems straight forward unless there is some missing electrical components that I would need such as resistors

[Paul Andrews]

Not sure what you mean by ‘do this’. Also, if you want to adjust the display with rotary switches, look at rotary encoders too.

> On Jun 20, 2020, at 10:46 AM, Derek Schuetz <hackfr...@gmail.com> wrote:
>
> Thanks everyone for the replies so I ended up with this

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[Derek Schuetz]

Sorry by do this I mean make a counter that seems less complicated and requires less components to almost do the same thing. As far as an encorder was looking for one but I couldn’t find one that had a high voltage or few digits. Or do you mean an encoder for the Arduino route?