![]() ![]() ![]() If your microcontroller supports a true Digital to Analog Converter (DAC), then you can get values from 0 to simply using analogWrite() to a DAC pin. For other applications you may need a continuous DC output voltage. Sometimes a PWM output using analogWrite() is enough to control things like the speed of a DC motor or the perceived brightness of an LED light. 30 Analog Output and Switching Circuits Analog Output Circuits
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