Introduction: Touch Sensor LED
touch sensor LED is a simple led circuit. the led switches on when we touch the two terminals of the wire
Step 1: Parts List
1 x 2N3904 transistor or any other npn transistor
1 x 470r resistor ( yellow violet brown)
1 x 330uf capacitor
1 x LED ( 3v ,any colors you like)
1 x 9V battery
Step 2: Steps
complete the circuit according to the circuit diagram, it so simple , the total circuit is less than 3cm in scale
Step 3: Conclusion
have fun with this circuit,
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