Arduino 9: Driving a Bipolar Transistor: 2n3055 As Light Dimmer
Another application of the simple, sensor driven voltmeter. The 2n3055 bipolar power transistor is used along with the Arduino’s pwm output to function as a sensor-controlled light dimmer. The photovoltaic cell is still useful as a simple sensor but anything that makes a variable 0-5 volt output can be used. Program sketch at: www.mediafire.com
