I plan on using 6 PIR sensors on an Uno R3. I will be using 2 of the interupts on the board to "wake" the board from sleep. But that leaves the other 4 with out interupts.
Is there some way to make another 4 non-hardware interupt pins on an Uno into hardware interupts just like digital pins 2 and 3? That way each PIR can wake the board and I can know which PIR(s) are HIGH.