· PIR_Motion_Sensor. Grove - PIR Motion Sensor. This is a simple to use PIR motion sensor with Grove compatible interface. This sensor allows you to sense motion, usually human movement in its range. Simply connect it to Grove - Base shield and program it, when anyone moves in its detecting range, the sensor will output HIGH on its SIG pin.
· I was going through the data sheet of the PIR motion sensor when i saw this: So what i couldn't understand was the H and L trigger and how to change from H to L or L to H (like to do we have to provide HIGH to the H trigger to activate it or something else). I found a little bit of description here but i'm not fully able to grasp this: