I forgot to add that two details not visible in my PCB are that the polarity (POL) line on the HV5530's is pulled high, and the blank lines (BL) are connected to the microcontroller on a PWN pin, as defined in the code.
On Thursday, October 4, 2018 at 10:04:07 PM UTC-4, Kevin A. wrote: > > Hi everyone, > > My name is Kevin, and I've recently developed a nixie obsession. This > seems like the place to be for those who are obsessed with all kinds of > glowing tubes! > Also, I'm currently working on a project to make a 10 digit display from > NL840 tubes, with dots and a plus/minus NL843 tube (primarily for a > calculator). It is driven by four Microchip HV5530 serial to parallel > converters and an arduino (12v to 3.3v logic level shifter of course). Here > is a quick demo video I've made of testing the display (haven't quite > figured out the software yet; first time!): > > https://www.youtube.com/watch?v=468QV6E7rm4 > > Currently, I've found myself getting stumped with the software aspect of > driving these four daisy chained HV chips. They are essentially 32 bit > shift registers back to back, for a total of 128 bits. Some of the outputs > are not used too, please see the pcb (I didn't make a traditional > schematic). If anyone can see my bitbanging code that was used in the video > ( > https://github.com/verrucktmechaniker/nixie-calculator/blob/master/bitbang_test) > > and my board layout image (https://postimg.cc/LnKstKLh) and make sense of > how to control this, that would be awesome! I definitely plan on releasing > this project as a step by step do-it-yourself once I get some help and > figure out the software/control side of things! > > Thanks > > On Wednesday, September 19, 2018 at 11:03:23 AM UTC-4, neonixie-l wrote: >> >> Ladies & Gentlemen,,, >> >> We are getting a steady stream of new members - it'd be great if, instead >> of just lurking, you could introduce yourselves with a bit of detail about >> your interests, what you've built or intend to build/dream of building. >> Even what gets you up the morning and makes you smile! >> >> Even existing members (there are over 1,000) could chip in - there's some >> great stuff around... >> >> Welcome, one and all to this great community! >> >> Nick >> >> >> -- 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/648cd176-0df8-43b6-96ed-2f301bac6e5f%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
