Hi, thanks for your answers.
First, here is the link mentioning the AND gate to couple two receiver :
The AND logic seems odd to me too, the OR is more what I'm looking for.
In fact, I don't need to know which receiver receives the signal, both will act exactly the same in my program. I just need two of them because of the distance between the two points.
My need could be satisfied with the OR gate solution. Could you please tell me more about this ? Should I choose a CMOS gate ? a particular model ? do I need something else to wire the whole thing ?
@Chagrin : do you need it won't work due to the cable length ? Should I try with a shielded cable ? What is the maximum cable length you think I can use ?
NOTE: I may be able to reduce the cable length this way:
each 10 meters cable may become 4 to 5 meters.
Is a RS485 based solution more robust ?
Thanks for your tips