Thanks, yes, that's also taking advantage of the double-ended tube design. You mention the ESP8266, but what VFD drivers are used ?
On Fri, Jun 9, 2023 at 6:08 PM leo oel <[email protected]> wrote: > watch version on IV-27M > > https://www.pcbway.com/project/shareproject/VFD_Clock_IV_27M_27_ESP8266_WiFi_universal_board_Right_Rev_B_c3d57047.html > > пятница, 9 июня 2023 г. в 20:02:31 UTC+3, Adrian Godwin: > >> I stash away parts for projects like that from time to time. Often not >> very well researched and just look suitable, pending me looking more >> carefully into the project. >> >> With that in minds, I've got a few IV-27M tubes, which interest me >> because they have signal wires at both ends, and I'm imagining a steampunk >> style mount that would take advantage of it. >> >> There are various ways I might drive these, but I have also picked up >> some PT6311 chips which have a flexible grid/segment driver system and an >> spi interface as well as some other flexible i/o. They'd still need a >> timekeeping chip of some sort. >> >> Getting the time from NTP seems attractive at the moment but there are >> plenty of alternatives. There's currently high availability of some very >> good ovened CTI OSC5A2B02 crystal oscillators for only $2-3 that seem to >> be good for about 4ms per year. >> >> On Fri, Jun 9, 2023 at 2:24 AM Moses <[email protected]> wrote: >> >>> I happened to dig up a box of IV-21 tubes. Soviet made 8x 7-segment >>> digits in a single tube. Thinking this needs to be the next kit. >>> >>> What is a modern/common/best/CREATIVE way to drive these? The max6921 >>> chips look common.. a bit heavy at $8 a pop on mouser! :/ >>> >>> Filament and grid voltages are simple enough. >>> >>> Thanks! >>> >>> Regards, >>> -Moses >>> >>> -- >>> 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 view this discussion on the web, visit >>> https://groups.google.com/d/msgid/neonixie-l/888ea452-1653-4d6b-a227-9e043b1468c9n%40googlegroups.com >>> <https://groups.google.com/d/msgid/neonixie-l/888ea452-1653-4d6b-a227-9e043b1468c9n%40googlegroups.com?utm_medium=email&utm_source=footer> >>> . >>> >> -- > 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 view this discussion on the web, visit > https://groups.google.com/d/msgid/neonixie-l/3e4bd7ff-721c-44a0-adc8-8e7845ce3e61n%40googlegroups.com > <https://groups.google.com/d/msgid/neonixie-l/3e4bd7ff-721c-44a0-adc8-8e7845ce3e61n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- 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 view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/CALiMYrs%2B1CEMwYYUM148zueex86S%2BgduAi7H_3LbgyhWJW95tQ%40mail.gmail.com.
