Hi, The 74HCT132 2 input NAND Schmitt Trigger was powering a transistor to power the IR emitters, I removed the transistor and am now feeding the emitters through a 1k resistor directly from the 74HCT132, and am getting about 90% accuracy with direct line of sight. I will try slowing the baud rate to see if I can get 100% accuracy, I don't need a high baud rate so this should be OK. Thanks to all for help/suggestions, Kevin >Hi Wouter, >The circuit is figure 6 on this page >http://www.rentron.com/Infrared_Communication.htm >I feed the 40khz carrier and the serial data into a >74HCT132 2 input NAND Schmitt Trigger. -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu