/* Analog input, analog output, serial output Reads an analog input pin, maps the result to a range from 0 to 65535 and uses the result to set the pulse width modulation (PWM) of an output pin. Also prints the results to the serial monitor. (You may need to change the pin numbers analogInPin and analogOutPin if you're not using a Maple). The circuit: * Potentiometer connected to analog pin 15. Center pin of the potentiometer goes to the analog pin. Side pins of the potentiometer go to +3.3V and ground. * LED connected from digital pin 9 to ground created 29 Dec. 2008 by Tom Igoe ported to Maple by LeafLabs */ // These constants won't change. They're used to give names // to the pins used: const int analogInPin = 15; // Analog input pin that the potentiometer // is attached to const int pwmOutPin = 9; // PWM pin that the LED is attached to // These variables will change: int sensorValue = 0; // value read from the pot int outputValue = 0; // value output to the PWM void setup() { // Configure the ADC pin pinMode(analogInPin, INPUT_ANALOG); // Configure LED pin pinMode(pwmOutPin, PWM); Serial.begin(115200); // Ignored by Maple. But needed by boards using Hardware serial via a USB to Serial Adaptor } void loop() { // read the analog in value: sensorValue = analogRead(analogInPin); // map it to the range of the analog out: outputValue = map(sensorValue, 0, 1023, 0, 65535); // change the analog out value: pwmWrite(pwmOutPin, outputValue); // print the results to the serial monitor: Serial.print("sensor = " ); Serial.print(sensorValue); Serial.print("\t output = "); Serial.println(outputValue); }