I created a simple but fun circuit using one LED light, three wires, a resistor, and copper tape. My goal was to make an unusual switch that doesn’t use hands. Instead, I used my little brother’s legs to complete the circuit!
I wrapped copper tape around both of his leg. When he touches his legs together, the copper tape connects, and the circuit closes, lighting up the LED. When he separates his legs, the circuit opens and the light turns off. It was really funny to see it work—it felt like he had leg powers!
https://drive.google.com/drive/u/0/folders/1Kk2lkQgoAyybXSYWVmY2Dog9uQVX_DMq
This project taught me how the human body can become part of an electronic switch. It also made me think about how switches don’t always need buttons or hands—they can be playful and interactive in unexpected ways.
In the future, I want to add sound effects using a buzzer so that it not only lights up but also makes a sound when the legs touch. I think that will make the experience even more surprising and fun!