Touch Sensing Flashlight
by John_Singleton_ in Circuits > Electronics
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Touch Sensing Flashlight
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Make a LED light turn on when you touch metal plates. No buttons or switches needed.
What You Need
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What you need-
Metal Plates( I used 4)
Wires (idk how many)
Led
NPN transistor (any)
2 resistors (I don't know what ratings they are)
Knife Box
1 9volt battery
Metal Plates( I used 4)
Wires (idk how many)
Led
NPN transistor (any)
2 resistors (I don't know what ratings they are)
Knife Box
1 9volt battery
Wire the Resistors
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Attach two wires onto both sides of the 2 resistors.
Take It Off
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Take the top of the 9 volt battery off.
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Attach two wires on each terminal on the 9volt battery's top that we just took off.
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Attach the transistor and LED as shown. The circuit diagram will be on the last step of the project.
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Attach the two resistors wires together and then attach one of the wires to the Transistor wire that is connected to the positive side of the 9 volt battery's top.
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Attach 2 bigger wires to the 2 wires that are left from the circuit.
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Tape the circuit in the box.
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Make a small hole for the led.
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Attach a 9volt battery to the clip.
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Close your box and put the two bigger wire ends through a hole at the top that you can make. Test your light.
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Tape the metal plates to the box and put the two wires touching two different plates. I did this twice to make 4 metal plates.
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It's all done! Now touch the plates and you will complete the circuit with your own hand! Hope you liked the project :)
The Diagram
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This is the diagram I made this project off of.