A very basic alarm circuit using a 9V battery.
Green led as power ON indicator.
Flashing yellow led with a buzzer for the alarm. However in this video, the buzzer did not sound. :)
Red led for halt indicator. When switched on, the yellow led will stop flashing and the buzzer will stop buzzing. Vice Versa.
can u please post any video showing the proper connections of each component on the bread board for this circuit?
vostro147 6 months ago
WHERE WAS THE HORN/BELL?
acedude4020 9 months ago