hi,
i see that i can add ldr to Hc-sr501 pir sensor so it will work only at night,the output become high for a certain period if any motion detected .
can i modify it so the output become always high at night(even no motion detected) and goes low during the day ?
L
i see that i can add ldr to Hc-sr501 pir sensor so it will work only at night,the output become high for a certain period if any motion detected .
can i modify it so the output become always high at night(even no motion detected) and goes low during the day ?
L