A This circuit will activate a device when it detects movement from a heated object - usually a person or animal.
The PIR has a range of at least 5 metres.
There are several ways of connecting a driver and load. Two are shown below.
Another method is shown in the Speed Controller #2
Takes about 30 seconds after power-up to settle and begin detecting.
Set the jumper to Range 2 - (max 2.5 secs)
For longer than 2.5 secs, select Range 3.
For reliable operation, use 3 x100nF capacitors between the motor connections and the case. Motors produce very strong electrical interference.