Requirements-



1. Breadboard



2. 1,10&100 K Resistor



3. 1,10 micro farad capacitor



4.  Wires



5.  Microphone Condenser



6.  74LS109,74LS123 & LM324 ic



7. Potentiometer



8. Led



9. 5 volt Battery or 12 to 5 volt converter if you have 12 volt 


Circuit Diagram-:





For Making Watch this video