Gastón, Sure thing. I will post here when I am happy with the firmware!
The MCU is an atmega32u2 clocked at 16 MHz. It has a built-in USB peripheral for communicating with a host computer. Sea On Sunday, April 19, 2015 at 5:09:23 PM UTC-7, GastonP wrote: > > 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/9b3c5fdc-19c1-454f-8030-79c582cc9a90%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
