Check the legends printed on the PCB regarding the functions of the 3 pins. (I think I recall reading that such sensors can differ in their pinout.)Yes, I have changed the controls but unfortunately this has not changed anything. In the meantime, I had the circuit exactly as in the link, but no movement was ever detected there. That's why I thought I would connect the led directly via a resistor. This has shown that whether there is movement or not, there is always an output voltage on the middle pin. Unfortunately I have not found a suitable program for the sketch with which such a sketch can be created
As already suggested, does the PIR board have rotary potentiometers for Sensitivity and Delay? Does adjusting them - perhaps to all 4 possible combinations of their respective limits, reveal anything?
The final possibility is that the PIR sensor is faulty.
Statistics: Posted by B.Goode — Mon May 13, 2024 7:34 pm
