Hello everybody! Today, I'm going to show you how to make a transistor-amplified touch switch. Let's get right in to the build! Part For the switch, you will need:Piezo Buzzer (1)LED (1)100K resistor (1)220 ohm resistor (1)NPN Transistor (2)Jumpers (several)Breadboard5-6v battery pack Circuitry...By: DerpyCyclops
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