I am attempting to have 2 08's send serial 1-4,5-8 respectively to 2 other 08's that will decode it and turn leds on.I am trying to do this using only 2 wires. So I have 2 08's sending the data. I have completed the code for the 08's and they are working fine.Now I am just at the point of connecting them both to my DB9 connector then my sending unit willbe done.I put a 4148 diode on the line out coming from each 08 to keep the signal away from the other 08 that will also be sending data.My data is not making it past my diode. On the 08 side my sender is working fine but on the other side of the diode the signal is not there. I have the polarity of the diode correct and have checked it the other way just to be sure.Do I need the diodes there in the first place? I saw it on a webpage somewhere. Both 08s are sending data on the same wire.The first is sending "1","2","3","4" the second is sending "5","6","7","8" out on the same line so that my decoding 08s will be able to decode the 1,2,3,4,5,6,7,8. Im not sure what will happen if the pin on my second 08 gets the data from my first 08 both in the sending unit because they are communicating over the same wire. I hope this wasnt too confusing. Its hard for me to explain sometimes.Thanks for any help.