I tried to construct the circuit with breadboard. I used voltage supply (cell) 9V.
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| Circuit Diagram |
This is a circuit that I constructed. I just skip to put the touch pad. I think that I constructed the circuit correctly followed the diagram.
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| Circuit Constructed |
But my circuit cannot run like what I wanted. Just one (1) red LED is lighten when I switch on the button. The buzzer also had no sound.
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