Pretty cool stuff. The commenters on that first link are right though, you can reproduce all that vinyl distortion and noise digitally and make it sound identical, if that's what you're into. Maybe one of these days I'll do a CRT clock. Guess I should look for a nice CRT to hoard...
On Mon, Apr 25, 2022 at 10:52 AM Paul Andrews <p...@nixies.us> wrote: > It looks like it is almost working, so might be worth trying to repair, > though space can be pretty tight in there. I was in a similar situation and > chose to replace the electronics with a clock kit. I modified it heavily to > also work as a bluetooth speaker with audio visualization > https://youtu.be/3Jtd4h9_4nk. > > An alternative to a clock is a vector graphics game mod (think battlezone > and asteroids). This is one > https://hackaday.com/2015/12/29/32c3-vector-video-games/, this is another > https://hackaday.com/2020/05/07/scopetrex-is-a-game-console-for-your-oscilloscope/. > I'm not sure if these are replacements, or if they just connect to the X/Y > inputs of a working 'scope. > > On Monday, April 25, 2022 at 9:44:57 AM UTC-4 Toby Thain wrote: > >> On 2022-04-24 7:45 p.m., Mac Doktor wrote: >> > >> >> On Apr 24, 2022, at 6:10 PM, 'John Rehwinkel' via neonixie-l >> >> <neoni...@googlegroups.com <mailto:neoni...@googlegroups.com>> wrote: >> >> >> >>> I'd *really* like to know what frequency ratios of oscillators B and >> >>> C create static or cycling patterns (A & D produce a lissajous figure >> >>> baseline)). My idea is to use something like an Arduino with some >> >>> rotary encoders that jump between ideal frequencies. >> >> >> >> Not high frequency at all, that project was from 1975. Oscillator A >> >> is 60Hz, oscillator B is variable from 60-240Hz, oscillator C is >> >> variable from 300-3000Hz, and oscillator D is variable from 30-300Hz. >> > >> > True but we're dealing with square waves here. Doing this digitally >> > (which I am very interested in) requires a decent sampling rate to keep >> > the corners sharp, which is a large part of the appeal of this analog >> > version. Having tried it with a laser and some galvos I can tell you >> > that good bandwidth makes a big difference. And that's as much as I >> know >> > about it. I'm here to learn from you guys. >> >> I've been working on a vector generator. The first iteration is about >> 20k vectors/second but supports lines and points only (no circle >> segments or anything fancy yet). Just finished routing the PCB. >> >> It should be usable with most dev boards that use Arduino Uno pinout >> (3.3v or 5v). I have been testing with NXP Freedom KE06Z but I expect to >> port the code to Duemilanove and STM32 Nucleo G474RE at least. >> >> Sample output: https://imgur.com/a/fZfqSmG >> >> --Toby >> >> >> > >> > >> >> I've been using a Teensy board, that processor has a pair of built-in >> >> DACs, so it wasn't hard to have the old scopes display their own >> names. >> > >> > 8 bit DACs? Tell me more. >> > >> > >> > Terry Bowman, KA4HJH >> > "The Mac Doctor" >> > >> > https://www.astarcloseup.com <https://www.astarcloseup.com> >> > >> > “...the book said something astonishing, a very big thought. The stars, >> > it said, were suns but very far away. The Sun was a star but close >> > up.”—Carl Sagan, "The Backbone Of Night",/Cosmos/, 1980 >> > >> > >> > -- >> > 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+...@googlegroups.com >> > <mailto:neonixie-l+...@googlegroups.com>. >> > To view this discussion on the web, visit >> > >> https://groups.google.com/d/msgid/neonixie-l/F63C6D78-CE08-4103-ACD8-E274FCAA4288%40gmail.com >> > < >> https://groups.google.com/d/msgid/neonixie-l/F63C6D78-CE08-4103-ACD8-E274FCAA4288%40gmail.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 neonixie-l+unsubscr...@googlegroups.com. > To view this discussion on the web, visit > https://groups.google.com/d/msgid/neonixie-l/7723cd70-94af-40da-9179-ac46267166bbn%40googlegroups.com > <https://groups.google.com/d/msgid/neonixie-l/7723cd70-94af-40da-9179-ac46267166bbn%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 neonixie-l+unsubscr...@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/CAJD4P-jSBwP7pbz01DnEM_taNoGC9ecwNcOXsAoNXrYERO9tKg%40mail.gmail.com.
