I really need a hand here. I am trying to control an IN-19B nixie tube with an Arduino UNO. I am using a 170v power supply with a 20K resistor on the anode and the k155id1 driver IC. I have got things working fine (cycling through characters) with the small problem that after about 10-60 seconds I will hear a small click/pop noise and multiple characters on the nixie light up, some still cycling but with other digits that are turned on obscuring them. I assume this noise is the nixie driver blowing and causing some cathodes to short to ground. I have checked the voltage I am supplying the chip with from my arduino (5V) and the placement of all jumper cables and everything seems to be wired correctly. I've also tried running the chip at a lower 3.3v in case I was somehow killing it overvolting it or something. (I know this is a bit stupid because the IC definitely runs at 5v but I was desperate at this point)
I would be eternally grateful if someone could shed some light on this situation. The graveyard of drivers on my desk is growing :(. I have contacted the eBay seller that supplied me with the drivers and they are equally confused. Below you should find the schematic I am using, relevant data sheets and an image of my setup. (I am aware the name of the driver on the schematic and in my circuit are different but from what I saw online the name is the only difference between the two)
I am hoping to use theses tubes in a project for my art A Level so you really would be saving my life if you helped. Thank you. :)
The problem appears to be solved after re positioning and replacing the resistor on the breadboard all is functioning correctly.
Thank you everyone for your help and very well spotted. I'll make sure to learn from mistakes like this and hope this informs others that see this.
Slightly worrying development. The chip I tried after the fix just did the same thing. This time it took an hour instead of 10 seconds which is definitely an improvement but still sub optimal.
Through sheer incompetence I misunderstood the instructions about the resistor. I believe this should work. Really sorry about that everyone. I remember thinking the pink tinge to the cathode was odd. Assumed it was just variation in tubes but with the colour difference after re positioning the resistor it was obviously a cry for help. Thank you everyone again apologies for my incompetence I will also make sure to learn from this.