> http://forums.arcade-museum.com/showpost.php?p=2391595&postcount=43)
This is a nice writeup and a good-looking project! I'm really interested, as I'm a pinball aficianado myself. I really think the 3D effect of nixies would be appealing in score displays. > Initial debug turned up a dumb assembly mistake..– I swapped U1 & U2 despite > the clear labels on the silkscreen. Silkscreen? That looks like a protoboard. I'm unsure what U1 and U2 are anyway, most of those supplies only use one IC (the 555). > I was able to empirically calculate the Anode resistor using the built-in > test point and pot. 21.4k... now I just need to find some 22k 603 resistors > to make it work. 21.4k gives me 2.5mA of anode current which is typical for > the NH-12A tubes I’m using. Make sure those SMD resistors can withstand the voltage - you may need to use two in series if not. > I decided early on that I wanted the backlite to be purple rather than some > other color because I thought it’d contrast nicely against the orange digits. And it does - any any mercury haze is effectively rendered invisible. > With the resistor calculated; I need to focus on creating a Display tester so > I can run the display thru all the digits and functions. This is where something like an Arduino comes in handy, as you can just use it as an easy-to-program logic level generator and have it cycle through any patterns and sequences you like with not much effort. - John -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
