Shadow Detector
An Electronics Project
This video explains how to create an alarm that is activated when something or some one, blocks a beam of light - a simple security alarm. With the addition of a relay, this circuit can be modified to control lights, motors or other high current devices.
Пікірлер: 7
Well explained...nice video
Really like these!
great video!
will this work if we connect a buzzer instead of a speaker. and if yes then buzzer of 9 volts will do? or any other?
What happens if the capacitor is changed?
is it possible to send the signal to a pc?
please answer