Hi again! > Is it a solid on ? Might there be a fast on/off loop ? How does its > brightness compare with a steady 5V supply ? Compared with a steady 5V supply the brightness is lower... This could be a symptom of a too fast on/off loop? > Get it going in MPLAB Sim before even doing the hardware? MPLAB doesn't work on Linux, but I can try to install it with WINE... Dan -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist