How to Make Motion Detectors
- 1). Connect the positive (+) wire from a 9v battery clip to the positive (+) terminal of a PolyBlock, and the negative (-) wire from the battery to the 0v terminal of the PolyBlock.
- 2). Connect the red wire from a PIR sensor to the 5v terminal on the PolyBlock. Then connect the black wire to the 0v terminal on the PolyBlock and the yellow wire to input 2 on the PolyBlock.
- 3). Set the function switch on the PolyBlock to 0010. That will keep the alarm on after the intruder leaves the range of the sensor.
- 4). Connect the positive (+) lead from a buzzer or alarm to the +V connector on the PolyBlock, and the negative (-) lead from the buzzer or alarm to the S0 connector on the PolyBlock.
- 5). Connect the battery to the clip. This will power the motion detector.
- 6). Adjust the onboard trimpot of the PolyBlock to determine how long the buzzer will sound once motion is detected. You can calibrate it to any amount between a second or two and fifteen minutes. For the shortest amount of time, set the trimpot counterclockwise. Gradually turn it clockwise to lengthen the duration.
