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By sblantipodi
#82938 Guys is there a way to reduce false positive on a sr501 pir? I tried by adding a 1000uf capacitor on the +5vcc and ground but it doesn't helped. Using a D1 mini board here. I tried with a 100ohm pull up resistor between gpio and 3.3V but with this pull up the pir is always on. Any suggestions?
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By sblantipodi
#82940
Pablo2048 wrote:Maybe the false positives are not because LF noise but HF - try to connect 10nF/68nF/100nF ceramic capacitor in parallel, or try to use some EMI filter in SR power path.


As I wrote I have a capacitor on the +5V/GND line but it doesn't solved the problem :(
do you mean something else?