I built one of the Switch Mode cut and jump shields, and I didn't have any issues at all. I did have to adjust the voltage, but I got it working without incident. Have you contacted anyone over at SWD? They are really good about customer service. Not sure why you are having the ghosting.
On Saturday, June 6, 2015 at 8:47:21 PM UTC-4, zapro wrote: > > Hi. > > Being a Nixie-hoarder for many years, i’m actually guilty of not having a > working clock at home. The only clock i have working is sitting in the > local hackerspace. It’s an direct driven design and have been working > perfectly for about 6 years now. > > As i have a million “real” projects that i am working on, ii’m pretty sure > that getting the time to design a clock “properly” isn’t just around the > corner. > > On one of those late-night shopping-sprees i came across this board: > http://switchmodedesign.com/collections/arduino-shields/products/open-source-nixie-tube-shield-cut-jump-pcb > and > ordered 2 pcs. > > I “trusted” the website-name (switchmode designs) as the board being > designed by one that knew what he was doing, so i didn’t check schematic or > board layout before i had the boards in hand …. Maybe i should have done > that, because that switcher is the worst design i have /EVER/ seen. > > Anyway, apart from that, it works ok-ish. > > I wanted to use this board as a “backend” for my own board with tubes. I > quickly whipped up a board for 4 IN-4’s: > https://www.dropbox.com/s/dsk1hv2xly7e9v2/Nixie.png?dl=0 > https://www.dropbox.com/s/yn42qtdki3vr7bo/Nixie2.jpeg?dl=0 > > It’s a milled PCB so that’s why the copper is left around the tracks. > > Now i am having this stupid problem - ghosting! > > No, it’s not software ghosting, because if i only connect a single tube > with two wires (the wide cable isn’t connected) , sometimes the neighboring > tube lights up, too. > > So somehow the tubes being connected only by the cathodes and the anodes > floating, powering one can excite the others. > > I even removed the pins for the tubes so the anode pins of the unused > tubes is not even touching the fibreglass-material. Only cathodes is > thouching. > > (anode-pin connected by flying wire to anode resistor and driver) > https://www.dropbox.com/s/y0xhc9gazrxa120/nixie3.jpeg?dl=0 > > Is there anything to do here, or should i scrap the boards and design my > own direct-driven circuit? > > > // Per. > > -- 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]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/f5fe60c2-bdc7-4083-bb27-b2598657f908%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
