User:Zalán Szakács/grad prototyping: Difference between revisions
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[https://www.tweaking4all.com/hardware/arduino/adruino-led-strip-effects/#colorpicker Tutorials] | |||
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Revision as of 10:40, 5 November 2018
P R O T O T Y P I N G
What is a Circuit?
What are Resistors?
conversion calculator resistor color code
Light-Emitting Diodes (LEDs)
How to use Arduino?
1. Arduino Script
*
* Zalan's first Program
*/
int ledPin = 13;
void setup()
{
//initialize pins as outputs
pinMode(ledPin, OUTPUT);
}
void loop()
{
digitalWrite(ledPin, HIGH);
delay(1000);
digitalWrite(ledPin, LOW);
delay(1000);
}
2. Arduino Script
int LED = 12;
int BUTTON = 4;
void setup()
{
pinMode(LED,OUTPUT);
pinMode(BUTTON,INPUT);
}
void loop()
{
if(digitalRead(BUTTON) == HIGH)
{
digitalWrite(LED,HIGH);
}else
{
digitalWrite(LED,LOW);
}
}
3. Arduino Script
int switchPin = 8;
int ledPin = 13;
boolean lastButton = LOW;
boolean currentButton = LOW;
boolean ledOn = false;
void setup()
{
pinMode(switchPin, INPUT);
pinMode(ledPin, OUTPUT);
}
boolean debounce(boolean last)
{
boolean current = digitalRead(switchPin);
if (last != current)
{
delay(5);
current = digitalRead(switchPin);
}
return current;
}
void loop()
{
currentButton = debounce(lastButton);
if (lastButton == LOW && currentButton == HIGH)
{
ledOn -= !ledOn;
}
lastButton = currentButton;
digitalWrite(ledPin, ledOn);
}
4. Arduino Script
// NeoPixel Ring simple sketch (c) 2013 Shae Erisson
// released under the GPLv3 license to match the rest of the AdaFruit NeoPixel library
#include <Adafruit_NeoPixel.h>
#ifdef __AVR__
#include <avr/power.h>
#endif
// Which pin on the Arduino is connected to the NeoPixels?
// On a Trinket or Gemma we suggest changing this to 1
#define PIN 6
// How many NeoPixels are attached to the Arduino?
#define NUMPIXELS 16
// When we setup the NeoPixel library, we tell it how many pixels, and which pin to use to send signals.
// Note that for older NeoPixel strips you might need to change the third parameter--see the strandtest
// example for more information on possible values.
Adafruit_NeoPixel pixels = Adafruit_NeoPixel(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800);
int delayval = 500; // delay for half a second
void setup() {
// This is for Trinket 5V 16MHz, you can remove these three lines if you are not using a Trinket
#if defined (__AVR_ATtiny85__)
if (F_CPU == 16000000) clock_prescale_set(clock_div_1);
#endif
// End of trinket special code
pixels.begin(); // This initializes the NeoPixel library.
}
void loop() {
// For a set of NeoPixels the first NeoPixel is 0, second is 1, all the way up to the count of pixels minus one.
for(int i=0;i<NUMPIXELS;i++){
// pixels.Color takes RGB values, from 0,0,0 up to 255,255,255
pixels.setPixelColor(i, pixels.Color(0,150,0)); // Moderately bright green color.
pixels.show(); // This sends the updated pixel color to the hardware.
delay(delayval); // Delay for a period of time (in milliseconds).
}
}
5. Arduino Script
#include <Adafruit_NeoPixel.h>
#ifdef __AVR__
#include <avr/power.h>
#endif
#define PIN 10
#define NUM_LEDS 60
#define BRIGHTNESS 50
Adafruit_NeoPixel strip = Adafruit_NeoPixel(NUM_LEDS, PIN, NEO_GRBW + NEO_KHZ800);
byte neopix_gamma[] = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2,
2, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 5, 5, 5,
5, 6, 6, 6, 6, 7, 7, 7, 7, 8, 8, 8, 9, 9, 9, 10,
10, 10, 11, 11, 11, 12, 12, 13, 13, 13, 14, 14, 15, 15, 16, 16,
17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22, 23, 24, 24, 25,
25, 26, 27, 27, 28, 29, 29, 30, 31, 32, 32, 33, 34, 35, 35, 36,
37, 38, 39, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 50,
51, 52, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 66, 67, 68,
69, 70, 72, 73, 74, 75, 77, 78, 79, 81, 82, 83, 85, 86, 87, 89,
90, 92, 93, 95, 96, 98, 99,101,102,104,105,107,109,110,112,114,
115,117,119,120,122,124,126,127,129,131,133,135,137,138,140,142,
144,146,148,150,152,154,156,158,160,162,164,167,169,171,173,175,
177,180,182,184,186,189,191,193,196,198,200,203,205,208,210,213,
215,218,220,223,225,228,231,233,236,239,241,244,247,249,252,255 };
void setup() {
// This is for Trinket 5V 16MHz, you can remove these three lines if you are not using a Trinket
#if defined (__AVR_ATtiny85__)
if (F_CPU == 16000000) clock_prescale_set(clock_div_1);
#endif
// End of trinket special code
strip.setBrightness(BRIGHTNESS);
strip.begin();
strip.show(); // Initialize all pixels to 'off'
}
void loop() {
// Some example procedures showing how to display to the pixels:
colorWipe(strip.Color(255, 0, 0), 50); // Red
colorWipe(strip.Color(0, 255, 0), 50); // Green
colorWipe(strip.Color(0, 0, 255), 50); // Blue
colorWipe(strip.Color(0, 0, 0, 255), 50); // White
whiteOverRainbow(20,75,5);
pulseWhite(5);
// fullWhite();
// delay(2000);
rainbowFade2White(3,3,1);
}
// Fill the dots one after the other with a color
void colorWipe(uint32_t c, uint8_t wait) {
for(uint16_t i=0; i<strip.numPixels(); i++) {
strip.setPixelColor(i, c);
strip.show();
delay(wait);
}
}
void pulseWhite(uint8_t wait) {
for(int j = 0; j < 256 ; j++){
for(uint16_t i=0; i<strip.numPixels(); i++) {
strip.setPixelColor(i, strip.Color(0,0,0, neopix_gamma[j] ) );
}
delay(wait);
strip.show();
}
for(int j = 255; j >= 0 ; j--){
for(uint16_t i=0; i<strip.numPixels(); i++) {
strip.setPixelColor(i, strip.Color(0,0,0, neopix_gamma[j] ) );
}
delay(wait);
strip.show();
}
}
void rainbowFade2White(uint8_t wait, int rainbowLoops, int whiteLoops) {
float fadeMax = 100.0;
int fadeVal = 0;
uint32_t wheelVal;
int redVal, greenVal, blueVal;
for(int k = 0 ; k < rainbowLoops ; k ++){
for(int j=0; j<256; j++) { // 5 cycles of all colors on wheel
for(int i=0; i< strip.numPixels(); i++) {
wheelVal = Wheel(((i * 256 / strip.numPixels()) + j) & 255);
redVal = red(wheelVal) * float(fadeVal/fadeMax);
greenVal = green(wheelVal) * float(fadeVal/fadeMax);
blueVal = blue(wheelVal) * float(fadeVal/fadeMax);
strip.setPixelColor( i, strip.Color( redVal, greenVal, blueVal ) );
}
//First loop, fade in!
if(k == 0 && fadeVal < fadeMax-1) {
fadeVal++;
}
//Last loop, fade out!
else if(k == rainbowLoops - 1 && j > 255 - fadeMax ){
fadeVal--;
}
strip.show();
delay(wait);
}
}
delay(500);
for(int k = 0 ; k < whiteLoops ; k ++){
for(int j = 0; j < 256 ; j++){
for(uint16_t i=0; i < strip.numPixels(); i++) {
strip.setPixelColor(i, strip.Color(0,0,0, neopix_gamma[j] ) );
}
strip.show();
}
delay(2000);
for(int j = 255; j >= 0 ; j--){
for(uint16_t i=0; i < strip.numPixels(); i++) {
strip.setPixelColor(i, strip.Color(0,0,0, neopix_gamma[j] ) );
}
strip.show();
}
}
delay(500);
}
void whiteOverRainbow(uint8_t wait, uint8_t whiteSpeed, uint8_t whiteLength ) {
if(whiteLength >= strip.numPixels()) whiteLength = strip.numPixels() - 1;
int head = whiteLength - 1;
int tail = 0;
int loops = 3;
int loopNum = 0;
static unsigned long lastTime = 0;
while(true){
for(int j=0; j<256; j++) {
for(uint16_t i=0; i<strip.numPixels(); i++) {
if((i >= tail && i <= head) || (tail > head && i >= tail) || (tail > head && i <= head) ){
strip.setPixelColor(i, strip.Color(0,0,0, 255 ) );
}
else{
strip.setPixelColor(i, Wheel(((i * 256 / strip.numPixels()) + j) & 255));
}
}
if(millis() - lastTime > whiteSpeed) {
head++;
tail++;
if(head == strip.numPixels()){
loopNum++;
}
lastTime = millis();
}
if(loopNum == loops) return;
head%=strip.numPixels();
tail%=strip.numPixels();
strip.show();
delay(wait);
}
}
}
void fullWhite() {
for(uint16_t i=0; i<strip.numPixels(); i++) {
strip.setPixelColor(i, strip.Color(0,0,0, 255 ) );
}
strip.show();
}
// Slightly different, this makes the rainbow equally distributed throughout
void rainbowCycle(uint8_t wait) {
uint16_t i, j;
for(j=0; j<256 * 5; j++) { // 5 cycles of all colors on wheel
for(i=0; i< strip.numPixels(); i++) {
strip.setPixelColor(i, Wheel(((i * 256 / strip.numPixels()) + j) & 255));
}
strip.show();
delay(wait);
}
}
void rainbow(uint8_t wait) {
uint16_t i, j;
for(j=0; j<256; j++) {
for(i=0; i<strip.numPixels(); i++) {
strip.setPixelColor(i, Wheel((i+j) & 255));
}
strip.show();
delay(wait);
}
}
// Input a value 0 to 255 to get a color value.
// The colours are a transition r - g - b - back to r.
uint32_t Wheel(byte WheelPos) {
WheelPos = 255 - WheelPos;
if(WheelPos < 85) {
return strip.Color(255 - WheelPos * 3, 0, WheelPos * 3,0);
}
if(WheelPos < 170) {
WheelPos -= 85;
return strip.Color(0, WheelPos * 3, 255 - WheelPos * 3,0);
}
WheelPos -= 170;
return strip.Color(WheelPos * 3, 255 - WheelPos * 3, 0,0);
}
uint8_t red(uint32_t c) {
return (c >> 16);
}
uint8_t green(uint32_t c) {
return (c >> 8);
}
uint8_t blue(uint32_t c) {
return (c);
}
Quick prototyping with Joca
Experiment question
How to make a stronger and more equal light beam of an LED light?'
Tools: Phone, aluminium foil, plexisheet 1 x 1 x 16 cm
plexisheet without the aluminium foil cover
plexisheet with the aluminium foil cover
lightbeam
lightbeam closer
Building new circuit together with Joca
19 | 10 | 18
30 led lights on 1m (full brightness)
RGB led (75% brightness)
Experimenting with light beam setup
23 | 10 | 18
components: 1 beamer, 1 smokemachine, 1 vault (dark room)
focus: How to divide the space with basic geometrical elements?
1 line lightbeam
1 line lightbeam in motion
1 line lightbeam horizontal static
.gif)
1 line lightbeam horizontal motion
.gif)
Arduino experiment
05 | 11 | 18
Fade In and Fade Out: Red, Green and Blue
#include <Adafruit_NeoPixel.h>
#define PIN 8
#define NUM_LEDS 30
// Parameter 1 = number of pixels in strip
// Parameter 2 = pin number (most are valid)
// Parameter 3 = pixel type flags, add together as needed:
// NEO_KHZ800 800 KHz bitstream (most NeoPixel products w/WS2812 LEDs)
// NEO_KHZ400 400 KHz (classic 'v1' (not v2) FLORA pixels, WS2811 drivers)
// NEO_GRB Pixels are wired for GRB bitstream (most NeoPixel products)
// NEO_RGB Pixels are wired for RGB bitstream (v1 FLORA pixels, not v2)
Adafruit_NeoPixel strip = Adafruit_NeoPixel(NUM_LEDS, PIN, NEO_GRB + NEO_KHZ800);
void setup() {
strip.begin();
strip.show(); // Initialize all pixels to 'off'
}
void loop() {
RGBLoop();
}
void RGBLoop(){
for(int j = 0; j < 3; j++ ) {
// Fade IN
for(int k = 0; k < 256; k++) {
switch(j) {
case 0: setAll(k,0,0); break;
case 1: setAll(0,k,0); break;
case 2: setAll(0,0,k); break;
}
showStrip();
delay(3);
}
// Fade OUT
for(int k = 255; k >= 0; k--) {
switch(j) {
case 0: setAll(k,0,0); break;
case 1: setAll(0,k,0); break;
case 2: setAll(0,0,k); break;
}
showStrip();
delay(3);
}
}
}
void showStrip() {
#ifdef ADAFRUIT_NEOPIXEL_H
// NeoPixel
strip.show();
#endif
#ifndef ADAFRUIT_NEOPIXEL_H
// FastLED
FastLED.show();
#endif
}
void setPixel(int Pixel, byte red, byte green, byte blue) {
#ifdef ADAFRUIT_NEOPIXEL_H
// NeoPixel
strip.setPixelColor(Pixel, strip.Color(red, green, blue));
#endif
#ifndef ADAFRUIT_NEOPIXEL_H
// FastLED
leds[Pixel].r = red;
leds[Pixel].g = green;
leds[Pixel].b = blue;
#endif
}
void setAll(byte red, byte green, byte blue) {
for(int i = 0; i < NUM_LEDS; i++ ) {
setPixel(i, red, green, blue);
}
showStrip();
}