What I need is the buzzer will activated when a suddenly shadow hit the LDR.
Is this circuit working?
The circuit looks OK.
I also building this circuit,
but i use 2N3904 NPN transistor since it is cheaper.
OK
My question is,
since my buzzer minimum voltage consumption is 5V.
I made a modification with insert another extra LED parrellel with buzzer.
Is it will work?
You need a resistor in series with the LED
I also confuse with those variable resistor connection.
There is 3 pin of it.
How should I connect it?
Link the centre pin to one of the end pins.
then connect into the circuit, one wire to the link and the other wire to the pin with no wire..
Code:
Connection> ------0+++0 0------------
Please refer to my attachment.
Are somebody suceed to make it through stripboard?
Have any photo?
Thx for advise.