LED Bargraph chip (guitar LED bling-age) ..do with a PIC?
Just been looking at twinkler guitar (because deep rooted in every musician is LED bling just waiting to be mounted on his guitar)...
Originally discussed here...
http://projectguitar.ibforums.com/in...howtopic=41134
with a youtube video of the end end goal here...
http://www.youtube.com/watch?v=TMiJ2kiyY2k
Here's the chip they use....
http://www.national.com/ds/LM/LM3915.pdf
Now I'm fairly new to PICs, & even I reckon I could fairly quickly kludge some LEDs that light depending on the analogue input level, but I guess what separates my likely awful code from the likes of the h/w chip is the algorithm for fading the LEDs out smoothly (and the 3dB bit).
Has anyone done such a thing with LEDs? (not LCD bargraphs...nice bright, twinkly LEDS)...or would anyone have a good starting point ?
Ta,
Hank.