07 February 2026

Unconventional Switch - Electronics Team 15

This unconventional switch is made to turn on and off an LED using two cups, alligator clips, salt water, and some aluminum foil. Power is connected to the bread board with a 5V output. The resistor used is for 100 ohms, which is then connected to an alligator clip. The alligator clip is clamped onto a cup with aluminum foil attached. Another alligator clip with aluminum foil is also clamped to the cup, not touching the other clip. The cup has some salt water in it, and when we place a second cup into the first cup, we displace the salt water and in return connect the two alligator clips. This is our switch. The second alligator clip is attached back to the bread board, connecting to the LED. So with the completed circuit with power, to turn on the LED you place a cup into the one with salt water. And to turn off the LED, you simply remove the cup.










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