For this assignment, I decided to make a switch with uses your body to close a circuit. The circuit consists of an LED, with two transistors, and a power source. The LED’s power comes from two transistors which are only connected to the power source when the circuit is complete using your body as your body acts like a wire between them.
I demonstrated with my arm, but it could be done with any part of the body.
Below is the website I used to make the circuit:
http://www.mallinson-electrical.com/touch-switch-circuit
Update: This week, I tried to make my switch using the microcontroller. I couldn’t get the circuit to work with the two transistors or using the body as the conductor so I opted to use salt water as my switch.
The salt water was able to complete the circuit and act as a switch for it. I decided to implement the salt water as it was recommended by the link I used above for last week’s circuit.