Very nice... I have bought 10 IV-4's just for this kind of thing. If you decide to go open please share.
BTW... which processor are you using? Gastón On Sunday, April 19, 2015 at 8:00:45 PM UTC-3, koolatron wrote: > > I actually designed and built a FLW clock out of IV-4/IV-17s; they’re > quite nice little tubes and currently still reasonably easy to get on the > e-site. > > https://dl.dropboxusercontent.com/u/709108/iv4lw.JPG > > And here’s a short movie of an older version of the clock “walking the > tree” as was mentioned earlier in the thread: > > https://dl.dropboxusercontent.com/u/709108/iv4lw2_wordwalk.mov > > Once I’ve finished up the software, I’ll open it up if there’s interest. > > Sean > > > > On Thursday, April 16, 2015 at 6:11:31 AM UTC-7, jrehwin wrote: >> >> As the B7971’s are so expensive these days, perhaps we should look for >> really large VFD’s. Or LED matrices. >> >> >> I scored some huge two-character VFDs from an elevator panel refit, along >> with several smaller 16-character ones that accept serial input at 600bps. >> >> The IV-4/IV-17 ones are a good size and still affordable. >> >> Noritake occasionally gives away some nice VFD doc matrix displays, too. >> >> One of the important points in using them, as you already noted is to >> look good, they need to have accurate spacing, so it sort of rules out >> individual LED’s - which are really cheap. >> >> >> You can build it up out of individual alphanumeric LED displays, which >> are available in a bunch of large sizes (like the Evil Mad Science 5 letter >> clock). >> >> I'm also working on an ongoing project to use an old monoscope tube as a >> character generator to display nicely formed characters on a small CRT. >> This could be the basis for a 4/5/6LW >> project, including some fun effects like stretching letters vertically or >> horizontally, and moving them around. I'm on about the sixth redesign >> (LT1172 switching regulator driving a CCFL >> inverter with a voltage doubler) of the monoscope power supply at this >> point. >> >> I like the idea of a scrolling clock or FLW – these days micros are not >> expensive. So it should not be too difficult to do a large scrolling clock >> then the issue of four, five, six , sever or more scrolling words is not an >> issue, especially if the matrices can be banked together. >> >> >> Some of the PJRC boards have PLENTY of memory and CPU horsepower, and >> they're small, cheap, and can be used with the Arduino toolset. >> >> - John >> >> -- 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/0079b73e-e018-459c-b8c7-d71a9c13ab0f%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
