Introduction: Touch Sensing Flashlight
Make a LED light turn on when you touch metal plates. No buttons or switches needed.
Step 1: What You Need
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
Step 2: Wire the Resistors
Attach two wires onto both sides of the 2 resistors.
Step 3: Take It Off
Take the top of the 9 volt battery off.
Step 4:
Attach two wires on each terminal on the 9volt battery's top that we just took off.
Step 5:
Attach the transistor and LED as shown. The circuit diagram will be on the last step of the project.
Step 6:
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.
Step 7:
Attach 2 bigger wires to the 2 wires that are left from the circuit.
Step 8:
Tape the circuit in the box.
Step 9:
Make a small hole for the led.
Step 10:
Attach a 9volt battery to the clip.
Step 11:
Close your box and put the two bigger wire ends through a hole at the top that you can make. Test your light.
Step 12:
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.
Step 13:
It's all done! Now touch the plates and you will complete the circuit with your own hand! Hope you liked the project :)
Step 14: The Diagram
This is the diagram I made this project off of.