> Start simple first. Get it working. If modulation or other things > are necessary add them later. A little motto I have is "First you make it work, then you make it pretty" It's surprising, or maybe not, how many non-electronic people I help design things with/for jump quickly way past the basics and consequently get boggled by what now looks like, to them, a much larger and more complicated project than it was an hour ago. There are actually a couple of people who I just can't work with because they "minutiae" a project to death and progress slows to a crawl I always start a project with a core aim. Only when that's working do I (allow myself to) move on to less-critical functions. Like what colour the case is or how many LEDs Joe --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .