Intro: 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)
NPN transistor (any)
2 resistors (I don't know what ratings they are)
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.
Attach two wires on each terminal on the 9volt battery's top that we just took off.
Attach the transistor and LED as shown. The circuit diagram will be on the last step of the project.
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.
Attach 2 bigger wires to the 2 wires that are left from the circuit.
Tape the circuit in the box.
Make a small hole for the led.
Attach a 9volt battery to the clip.
Close your box and put the two bigger wire ends through a hole at the top that you can make. Test your light.
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.
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.