Years ago, I built a small cube, for a friend, as a gift. It was 2.5" or 3" to a side, and made from 1/8" white translucent acrylic. Common stuff. The light came from 4 superbright LEDs (red, yellow/amber, green, and blue). The super brite blues, and greens, just came out, so it had to be ~1995. Each LED was tied to a 4017 CMOS counter output. I looped around Q5 to the reset, so it would only sequence 4 steps before resetting. It was clocked off a microphone amp, but not straight from the audio, but from the envelope of its amplitude (diode and cap / demodulated).
They also make special RGB LEDs, now, that slowly sweep thru the rainbow, over a period, maybe as long as a minute. Check eBay. On Saturday, June 20, 2015 at 8:28:30 PM UTC-7, Dman777 wrote: > > I want to get a frosted cube that changes colors for my desk. There are so > many out there I was wondering if anyone had suggestions on a really cool > one? > -- 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/d65ca59f-b48d-4c12-bc6d-f0daf669b83b%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
