This circuit is connected three pins: VCC, GND, Output, ie supply voltage (according to manufacturer 4V - 20V, tried it myself with 5V-12V), ground, and the output either 0V (no movement) or 4V (movement) has , I tried him at 5V and 3.3V at Ardunio (Mini Pro, Uno, Mega) and it works flawlessly each. The connection to a Raspberry Pi should work just perfectly.
Whether the sensor retriggers (ie when activated upon further movement the deactivation timer again set to 0) can be set via a jumper.
After deactivation, it takes about 1 second until it becomes responsive to movements.
For me it works well at a distance of about 3 meters, moreover it does not recognize the movement. He works for me both in light and in darkness. You can not adjust the size of the moving object. The Robotter vacuum cleaner solves the motion unfortunately also.
The white plastic cap (for light scattering) is mounted with 4 short plastic knobs on the board. In näufigem decreasing the cap, the connection is loose. The PIR sensor is soldered directly to the PCB. The unobtrusive installation of the module, for example, in a gypsum board is possibly a little difficult, a round hole is not enough, since the plastic cap on the end is square.
Greeting Mangars
