Arduino controlling LED Bar – Patterns and Bouncing
So it finally arrived! After only 20 hours, thanks to www.nicegear.co.nz for the awesome quick ship.
I made a video of my Arduino Mega 2560 in action and will post the code below.
Arduino source code after the break
const int A_0 = 0;
const int A_3 = 128;
const int A_5 = 200;
long previousMillis = 0; // will store last time LED was updated
long interval = 250; // interval at which to blink (milliseconds)
boolean leds_dirty = true; // does the leds need to be updated?
void setup() {
//Set pinMode to OUTPUT for pins 2..12
for (int i=1; i <= 12; i++){ pinMode(i+1, OUTPUT); } } boolean seq[] = {false, false, true, false, true, false, true, false, false, false, false, false}; void loop() { unsigned long currentMillis = millis(); if(leds_dirty) { update_leds(); } if(currentMillis – previousMillis > interval) {
// save the last time you blinked the LED
previousMillis = currentMillis;
// Setup a simple sequence
set_led(1, seq[0]);
set_led(2, seq[1]);
set_led(3, seq[2]);
set_led(4, seq[3]);
set_led(5, seq[4]);
set_led(6, seq[5]);
set_led(7, seq[6]);
set_led(8, seq[7]);
set_led(9, seq[8]);
set_led(10, seq[9]);
set_led(11, seq[10]);
set_led(12, seq[11]);
boolean temp = seq[0];
seq[0] = seq[1];
seq[1] = seq[2];
seq[2] = seq[3];
seq[3] = seq[4];
seq[4] = seq[5];
seq[5] = seq[6];
seq[6] = seq[7];
seq[7] = seq[8];
seq[8] = seq[9];
seq[9] = seq[10];
seq[10] = seq[11];
seq[11] = temp;
}
}
// Setup the leds as all off
boolean leds[] = {false, false, false, false, false, false, false, false, false, false, false, false};
void set_led(int number, boolean val) {
if(number_within_limit(number)) {
leds[number–1] = val;
leds_dirty = true;
}
}
boolean get_led(int number) {
if(number_within_limit(number)) {
return leds[number–1];
} else {
return false;
}
}
// Toggle led at position number
void toggle_led(int number) {
if(number_within_limit(number)) {
set_led(number, !get_led(number));
}
}
// Ensure the led position is correct
boolean number_within_limit(int number) {
return number >= 1 && number <= 12;
}
// Write out to LEDS appropreate values
void update_leds() {
//Simple case of 1,4,9 where LED is not connected to others in series, Who the fuck built this bar led??
if(get_led(1)){
analogWrite(2, A_3); //2 = LED 1
} else {
analogWrite(2, A_0);
}
if(get_led(4)){
analogWrite(5, A_3); //5 = LED 4
} else {
analogWrite(5, A_0);
}
if(get_led(9)){
analogWrite(10, A_3); //10 = LED 9
} else {
analogWrite(10, A_0);
}
//Not enough analog pins so putting this on a digital pin with a
if(get_led(12)){
analogWrite(13, A_3);
} else {
analogWrite(13, A_0);
}
//Complex case where led is connected in series
if(get_led(2)) {
if(get_led(3)){
analogWrite(3, A_5); //3 = LED 2
analogWrite(4, A_3); //4 = LED 3
} else {
analogWrite(3, A_3); //3 = LED 2
analogWrite(4, A_0); //4 = LED 3
}
} else {
if(get_led(3)){
analogWrite(3, A_0); //3 = LED 2
analogWrite(4, A_3); //4 = LED 3
} else {
analogWrite(3, A_0); //3 = LED 2
analogWrite(4, A_0); //4 = LED 3
}
}
if(get_led(5)) {
if(get_led(6)){
analogWrite(6, A_5); //6 = LED 5
analogWrite(7, A_3); //4 = LED 6
} else {
analogWrite(6, A_3); //6 = LED 5
analogWrite(7, A_0); //7 = LED 6
}
} else {
if(get_led(6)){
analogWrite(6, A_0); //6 = LED 5
analogWrite(7, A_3); //7 = LED 6
} else {
analogWrite(6, A_0); //6 = LED 5
analogWrite(7, A_0); //7 = LED 6
}
}
if(get_led(7)) {
if(get_led(8)){
analogWrite(8, A_5); //8 = LED 7
analogWrite(9, A_3); //9 = LED 8
} else {
analogWrite(8, A_3); //8 = LED 7
analogWrite(9, A_0); //9 = LED 8
}
} else {
if(get_led(8)){
analogWrite(8, A_0); //8 = LED 7
analogWrite(9, A_3); //9 = LED 8
} else {
analogWrite(8, A_0); //8 = LED 7
analogWrite(9, A_0); //9 = LED 8
}
}
if(get_led(10)) {
if(get_led(11)){
analogWrite(11, A_5); //11 = LED 10
analogWrite(12, A_3); //12 = LED 11
} else {
analogWrite(11, A_3); //11 = LED 10
analogWrite(12, A_0); //12 = LED 11
}
} else {
if(get_led(11)){
analogWrite(11, A_0); //11 = LED 10
analogWrite(12, A_3); //12 = LED 11
} else {
analogWrite(11, A_0); //11 = LED 10
analogWrite(12, A_0); //12 = LED 11
}
}
//Clear the dirty bit
leds_dirty = false;
}
Also the bouncing “ball” Arduino code
const int A_0 = 0;
const int A_3 = 128;
const int A_5 = 200;
long previousMillis = 0; // will store last time LED was updated
long interval = 1; // interval at which to blink (milliseconds)
boolean leds_dirty = true; // does the leds need to be updated?
float p = 60;
float v = 0;
float g_const = –0.02;
// Setup the leds as all off
boolean leds[] = {false, false, false, false, false, false, false, false, false, false, false, false};
void setup() {
//Set pinMode to OUTPUT for pins 2..12
for (int i=1; i <= 12; i++){ pinMode(i+1, OUTPUT); } pinMode(1, INPUT); digitalWrite(1, HIGH); } void loop() { unsigned long currentMillis = millis(); float g; if(leds_dirty) { update_leds(); } if(currentMillis – previousMillis > interval) {
// save the last time you blinked the LED
previousMillis = currentMillis;
if(get_switch()){
g = g_const;
} else {
g = –g_const;
}
v = v + g; //apply gravity
p = p + v; //apply velocity
if(p <= 0 || p >= 120) {
v = –v;
if(p <= 0) {
p = 0;
}else{
p = 120;
}
}
int led = p / 10;
set_all_leds(false);
set_led(led, true);
}
}
void set_led(int number, boolean val) {
if(number_within_limit(number)) {
leds[number–1] = val;
leds_dirty = true;
}
}
boolean get_led(int number) {
if(number_within_limit(number)) {
return leds[number–1];
} else {
return false;
}
}
boolean get_switch(){
return digitalRead(1) == HIGH;
}
void set_all_leds(boolean val){
for (int i=1; i <= 12; i++){ set_led(i, val); } } // Toggle led at position number void toggle_led(int number) { if(number_within_limit(number)) { set_led(number, !get_led(number)); } } // Ensure the led position is correct boolean number_within_limit(int number) { return number >= 1 && number <= 12;
}
// Write out to LEDS appropreate values
void update_leds() {
//Simple case of 1,4,9 where LED is not connected to others in series, Who the fuck built this bar led??
if(get_led(1)){
analogWrite(2, A_3); //2 = LED 1
} else {
analogWrite(2, A_0);
}
if(get_led(4)){
analogWrite(5, A_3); //5 = LED 4
} else {
analogWrite(5, A_0);
}
if(get_led(9)){
analogWrite(10, A_3); //10 = LED 9
} else {
analogWrite(10, A_0);
}
//Not enough analog pins so putting this on a digital pin with a
if(get_led(12)){
analogWrite(13, A_3);
} else {
analogWrite(13, A_0);
}
//Complex case where led is connected in series
if(get_led(2)) {
if(get_led(3)){
analogWrite(3, A_5); //3 = LED 2
analogWrite(4, A_3); //4 = LED 3
} else {
analogWrite(3, A_3); //3 = LED 2
analogWrite(4, A_0); //4 = LED 3
}
} else {
if(get_led(3)){
analogWrite(3, A_0); //3 = LED 2
analogWrite(4, A_3); //4 = LED 3
} else {
analogWrite(3, A_0); //3 = LED 2
analogWrite(4, A_0); //4 = LED 3
}
}
if(get_led(5)) {
if(get_led(6)){
analogWrite(6, A_5); //6 = LED 5
analogWrite(7, A_3); //4 = LED 6
} else {
analogWrite(6, A_3); //6 = LED 5
analogWrite(7, A_0); //7 = LED 6
}
} else {
if(get_led(6)){
analogWrite(6, A_0); //6 = LED 5
analogWrite(7, A_3); //7 = LED 6
} else {
analogWrite(6, A_0); //6 = LED 5
analogWrite(7, A_0); //7 = LED 6
}
}
if(get_led(7)) {
if(get_led(8)){
analogWrite(8, A_5); //8 = LED 7
analogWrite(9, A_3); //9 = LED 8
} else {
analogWrite(8, A_3); //8 = LED 7
analogWrite(9, A_0); //9 = LED 8
}
} else {
if(get_led(8)){
analogWrite(8, A_0); //8 = LED 7
analogWrite(9, A_3); //9 = LED 8
} else {
analogWrite(8, A_0); //8 = LED 7
analogWrite(9, A_0); //9 = LED 8
}
}
if(get_led(10)) {
if(get_led(11)){
analogWrite(11, A_5); //11 = LED 10
analogWrite(12, A_3); //12 = LED 11
} else {
analogWrite(11, A_3); //11 = LED 10
analogWrite(12, A_0); //12 = LED 11
}
} else {
if(get_led(11)){
analogWrite(11, A_0); //11 = LED 10
analogWrite(12, A_3); //12 = LED 11
} else {
analogWrite(11, A_0); //11 = LED 10
analogWrite(12, A_0); //12 = LED 11
}
}
//Clear the dirty bit
leds_dirty = false;
}
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In: Arduino, How To, Video · Tagged with: arduino source code, led
