Day 6 - Intro to Sensors and Microcontroller inputs and outputs

• Microcontrollers, input and outputs
•  Demonstrate Push button LED using if/else statement
• Here is how it was built in the video and what the end result was.

• In addition here is the code that helped achieve this

#define buttonPin 8 //# of pushbutton pin

#define ledPin 6    //# of LED pin

int buttonState = 0; //variable for reading the pushbutton status

void setup() {

  pinMode(ledPin, OUTPUT);  //initialize the LED pin as output:

  pinMode(buttonPin, INPUT);  //initialize push button as input:

}

void loop() {

buttonState = digitalRead(buttonPin); //read the state of the pushbutton value:

// check if push buton is pressed. If it is, the buttonState is HIGH:

if (buttonState == HIGH) {

    digitalWrite(ledPin, HIGH); // turn LED on:

}

else {

digitalWrite(ledPin, LOW); // turn LED off

}

}

• Demonstrate LDR controlling LEDs

• Here is how it was built in the video and what the end result was.

• In addition here is the code that helped achieve this

#define motorPin 9 //Motor connected to dig. pin 9

void setup() {

  // nothing happens in set up

}

void loop() {

analogWrite (motorPin, 90);//set motor to 20%

delay (1000);

analogWrite (motorPin, 50);//set motor to 90%

delay (1000);

}