I have bought some motion sensors (called NaPiOn) but need some help in choosing the correct components when designing an output circuit.
The sensor is the 5V digital-output version:
The manufacture have some examples on how to use the sensor. I'm just a little bit confused on how to calculate the correct resistance and how to determine which transistor to use (or which FET to use in example 2).
Look at the links for examples:
I'm also interested in using a optocoupler - Does anyone know if its okay just to have this directly on the sensor output? Or does this damage the sensor?
Thanks in advance!