Electronics › Electronics › Intruder Alarm › Hi,In previous posts I
January 2, 2015 at 11:07 am
#12492
Participant
Hi,
In previous posts I mentioned to connect a resistor 1K from emitter of transistor to VCC, it is not connected in the image. The positive pin of the capacitor should be connected to pin6 of 555 and the negative pin should be connected to the ground.