Arduino Pulse Width Modulation - Mini Tutorial with Oscilloscope Measurement
Just a quick video of using Arduino Pulse Width Modulation (PWM) to control the LED backlights on my Nokia 5110 LCD display attached to my data logger. Some of the eBay units appear to be ground side switched for the 5110 LCD. This is a simple (not recommended) method to control the back light from one PWM pin.
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