11. Input devices¶
This week I worked on input devices by Coding LED light.
Code Example¶
My Code
#define pushButton 2
#define LED 3
bool state=false;
void setup() {
pinMode(pushButton,INPUT);// my input of the my push button is in pin number 2
pinMode(LED,OUTPUT);
}
void loop() {
// put your main code here, to run repeatedly:
state= digitalRead(pushButton);
if(state==false){
state= digitalRead(pushButton);
digitalWrite(LED,HIGH);
delay(3000);
}
else{
digitalWrite(LED,LOW);
}
}
// the setup function runs once when you press reset or power the board
void setup() {
// initialize digital pin LED_BUILTIN as an output.
pinMode(LED_BUILTIN, OUTPUT);
}
// the loop function runs over and over again forever
void loop() {
digitalWrite(LED_BUILTIN, HIGH); // turn the LED on (HIGH is the voltage level)
delay(1000); // wait for a second
digitalWrite(LED_BUILTIN, LOW); // turn the LED off by making the voltage LOW
delay(1000); // wait for a second
}
- PIR sensor tester ``` */
int ledPin = 13; // choose the pin for the LED int inputPin = 2; // choose the input pin (for PIR sensor) int pirState = LOW; // we start, assuming no motion detected int val = 0; // variable for reading the pin status
void setup() { pinMode(ledPin, OUTPUT); // declare LED as output pinMode(inputPin, INPUT); // declare sensor as input
Serial.begin(9600); }
void loop(){ val = digitalRead(inputPin); // read input value if (val == HIGH) { // check if the input is HIGH digitalWrite(ledPin, HIGH); // turn LED ON if (pirState == LOW) { // we have just turned on Serial.println(“Motion detected!”); // We only want to print on the output change, not state pirState = HIGH; } } else { digitalWrite(ledPin, LOW); // turn LED OFF if (pirState == HIGH){ // we have just turned of Serial.println(“Motion ended!”); // We only want to print on the output change, not state pirState = LOW; } } } ``
Gallery¶
