> It is entirely possible. I have a couple of kids that are interested > in my project that might have helped me out Next project - cattle prod ? > actually only puts out something like 4.4v You probably almost definitely maybe won't see anything with 4.4V. The logic will work but the contrast drops off rapidly under Vspec > Vo about 1.2v. Not sure if that's good or bad Well, it's it's. Highest contrast is Vo = 0V, lowest is Vo = 5V Are you using the two-wire circuit ? -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist