ITP_NYU Digital Output - Intro to Pcomp Lesson 1
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void setup() {
// put your setup code here, to run once:
pinMode(2, INPUT); // set the pushbutton pin to be an input
pinMode(3, OUTPUT); // set the yellow LED pin to be an output
pinMode(4, OUTPUT); // set the red LED pin to be an output
}
void loop() {
// put your main code here, to run repeatedly:
// read the pushbutton input:
if (digitalRead(2) == HIGH) {
// if the pushbutton is closed:
digitalWrite(3, HIGH); // turn on the yellow LED
digitalWrite(4, LOW); // turn off the red LED
}
else {
// if the switch is open:
digitalWrite(3, LOW); // turn off the yellow LED
digitalWrite(4, HIGH); // turn on the red LED
}
}const int pinNumber = 9; // pin that the LED is attached to
int analogValue = 0; // value read from the pot
int brightness = 0; // PWM pin that the LED is on.
int frequency = 0;
void setup() {
// put your setup code here, to run once:
// initialize serial communications at 9600 bps:
Serial.begin(9600);
// declare the led pin as an output:
pinMode(pinNumber, OUTPUT);
}
void loop() {
// put your main code here, to run repeatedly:
analogValue = analogRead(A0); // read the pot value
frequency = (analogValue /4) * 10; // divide by 4 to fit in a byte, multiply by 10 for a good tonal range
tone(pinNumber, frequency); // make a changing tone on the speaker
Serial.println(brightness); // print the brightness value back to the serial monitor
}
const int redLED = 10; // pin that the red LED is on
const int greenLED = 11; // pin that the green LED is on
int rightSensorValue = 0; // value read from the right analog sensor
int leftSensorValue = 0; // value read from the left analog sensor
void setup() {
// put your setup code here, to run once:
// initialize serial communications at 9600 bps:
Serial.begin(9600);
// declare the led pins as outputs:
pinMode(redLED, OUTPUT);
pinMode(greenLED, OUTPUT);
}
void loop() {
// put your main code here, to run repeatedly:
rightSensorValue = analogRead(A0); // read the pot value
// map the sensor value from the input range (400 - 900, for example)
// to the output range (0-255). Change the values 400 and 900 below
// to match the range your analog input gives:
int brightness = map(rightSensorValue, 400, 900, 0, 255);
analogWrite(redLED, brightness); // set the LED brightness with the result
Serial.println(rightSensorValue); // print the sensor value back to the serial monitor
// now do the same for the other sensor and LED:
leftSensorValue = analogRead(A1); // read the pot value
// map the sensor value to the brightness again. No need to
// declare the variable again, since you did so above:
brightness = map(leftSensorValue, 400, 900, 0, 255);
analogWrite(greenLED, brightness); // set the LED brightness with the result
Serial.println(leftSensorValue); // print the sensor value back to the serial monitor
}