You can certainly connect the HV5530's "in-parallel" to the CPU. I would be more concerned about signal-levels, because the HV5530 is intended to run with 12V logic levels and your CPU is probably 3.3V. I'm using a level-shifter IC in my design, along with an FPGA.
BTW, I'm putting the finishing touches on my first IN-18 clock PCB; It's definitely worth the extra expense of IN-18's to get large and properly-formed digits (no funky upside-down 2's and 5's). I decided to use socket pins soldered to the pcb, rather than actual IN-18 sockets, because of space constraints. I hope I'm not going to regret this decision, and I'm definitely going to be very careful to form the pins to minimize stress. I also will not be swapping tubes around to even-out their usage (using de-poisoning algorithm instead). Do you plan to run your IN-18's 24/7, or will you use a motion-sensor, etc ? -- 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 neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/5b940109-e1fb-4213-846a-39c992e3a732%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
