Week 9: Blow Switch

“A switch is nothing more than a mechanism to bring two pieces of conductive material together and separate them. ” Since we are not allowed to use hands, I wanted to make a switch that works using a movement of an object through wind. Which is why I thought that I would stick one wire to a some conductor, and other wire would touch the conductor by moving to it.

The following materials were needed:

  • 330-ohm resistor
  • 1 LED light
  • Jumper wires
  • Breadboard
  • Arduino board
  • Scotch tape


First, I taped on of the wires connecting to the breadboard to an iron top of a cup. Then, I taped another wire that is connected to the breadboard to the hole of a round bottle (the object that would move by blowing). So, by blowing on the horizontal bottle in the direction of the iron top of the cup, the wires touch this conductor, therefore turning the LED on.

Video Link:https://youtube.com/shorts/U-Gy1GvoFjY?feature=share


I had a hard time brainstorming about ways to not utilize my hands and finding suitable conductors. I had different conductors than the ones I used in mind, but maybe because of the material itself, the LED was blinking dimly, so I had to change them. I expected taping process to be difficult considering the wires have to be put in place, but thanks to the conductor having a big surface area, it was not as difficult as I imagined.

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