// Example 03B: Turned an LED on and off with a button // I copied this code and changed the LED and Buttons after having trouble // with the redboard //started by watching many Youtube videos and web researching //feels like I'm finally understanding //started with wires, green LED, pentontemeter, resitor, arduino examples, //redboard, breadboard //pentontometer exchanged for button to complete circuit, something wasnt working //many failures experienced before lighting the LED //due to possibly not uploading the example sketch for the board correctly //what changed was that sketch was uploade correctly, the one from github //after a lot of relief from board working correctly decided to just switch pins //pin 13 was switched for 12 and I dont remember what pin 8 was switched from //I ended up with the board and LED wprking correctly //was begining to think my board was damaged somehow possibly due to shipment //This project has and will continue to lead to a greater understanding of boards //and electronics for me //and I hope others as well //GOOD NIGHT, AND THANK YOU FOR ATTENDING, DTC 338 VANCOUVER!!! #define LED 12 // LED pin #define BUTTON 8 // input pin for Pushbutton int val = 0; // val will be used to store the state // of the input pin int old_val = 0; // this variable stores the previous // value of "val" int state = 0; // 0 = LED off and 1 = LED on void setup() { pinMode(LED, OUTPUT); // tell Arduino LED is an output pinMode(BUTTON, INPUT); // and BUTTON is an input } void loop(){ val = digitalRead(BUTTON); // read input value and store it // check if there was a transition if ((val == HIGH) && (old_val == LOW)){ state = 1 - state; } old_val = val; // val is now old, let's store it if (state == 1) { digitalWrite(LED, HIGH); // turn LED ON } else { digitalWrite(LED, LOW); } } Sketch for pushbutton

//This is my pushbutton sketch // I copied this code and changed the LED and Buttons after having trouble // with the redboard

//started by watching many Youtube videos and web researching //feels like I'm finally understanding

//started with wires, green LED, pentontemeter, resitor, arduino examples, //redboard, breadboard

//pentontometer exchanged for button to complete circuit, something wasnt working //many failures experienced before lighting the LED

//due to possibly not uploading the example sketch for the board correctly //what changed was that sketch was uploade correctly, the one from github

//after a lot of relief from board working correctly decided to just switch pins //pin 13 was switched for 12 and I dont remember what pin 8 was switched from //I ended up with the board and LED wprking correctly

//was begining to think my board was damaged somehow possibly due to shipment

//This project has and will continue to lead to a greater understanding of boards //and electronics for me //and I hope others as well //GOOD NIGHT, AND THANK YOU FOR ATTENDING, DTC 338 VANCOUVER!!!

#define LED 12 // LED pin #define BUTTON 8 // input pin for Pushbutton

int val = 0; // val will be used to store the state // of the input pin

int old_val = 0; // this variable stores the previous // value of "val" int state = 0; // 0 = LED off and 1 = LED on

void setup() {

pinMode(LED, OUTPUT); // tell Arduino LED is an output pinMode(BUTTON, INPUT); // and BUTTON is an input }

void loop(){ val = digitalRead(BUTTON); // read input value and store it

                         // check if there was a transition

if ((val == HIGH) && (old_val == LOW)){ state = 1 - state; }

old_val = val; // val is now old, let's store it

if (state == 1) { digitalWrite(LED, HIGH); // turn LED ON } else { digitalWrite(LED, LOW); } }