ALARM
How to make an alarm using mainly 2  ic NE555 .the sound can be varied by changing capacitor C1.
COMPONENTS
1-ICNE555*2
2-RESISTER 10K*3
3-RESISTER 1K
4-RESISTER 6.8K
5-CAPACITOR .047uf
6-CAPACITOR 100uf*2
7-CAPACITOR 10uf*2
8-SPEAKER
9-9V BATTERY

                       CIRCUIT DIAGRAM

                           PCB LAY OUT

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