I know ws2812B goes at a specific bitrate,but How can I make the colorwipe (1 and 2) do go faster? like to turn on leds by groups of two or three leds
// DIGITAL MOTION SENSING STAIR LIGHTS
// Imran O Mumtaz
// Summer 2013
// Sources: ADAFRUIT LIBRARY, ARDUINO EXAMPLE CODE, ARDUINO FORUMS + (USER: JamesHayek) for some of the cool effects!
// Nested If statement suggested by Jessica Milne (CS 375)
// This system utilizes an Atmel Atmega 328p MCU along with 2 PIR (Pyroelectric infrared) Sensors (HC-SR501) and a Digital RGB LED strip (WS2811).
// One sensor placed at the bottom of the stairs (or where ever) and one at the top. Each sensor triggers a different animation (walking up or walking down) along with a shut down warning animation.
// Just modify the function calls in the void loop() and the actual functins towards the bottom area to change the animations, color, etc. colorWipe for example.
// The four parameters it takes are the RGB pixels followed by the speed at which you wish to run the animations. 0, 0, 0 would mean the LEDS are off and 255, 255, 255 means that they are all white/full brightness.
// Parameter 1 = number of pixels in strip
// Parameter 2 = pin number (most are valid)
// Parameter 3 = pixel type flags, add together as needed:
// NEO_RGB Pixels are wired for RGB bitstream
// NEO_GRB Pixels are wired for GRB bitstream
// NEO_KHZ400 400 KHz bitstream (e.g. FLORA pixels)
// NEO_KHZ800 800 KHz bitstream (e.g. High Density LED strip)
#include <Adafruit_NeoPixel.h>
Adafruit_NeoPixel strip = Adafruit_NeoPixel(666, 6, NEO_GRB + NEO_KHZ800);
const int RELAY_PIN = 2;
int motionPin = 8; // PIR Input pin 8, UPSTAIRS
int motionPin2 = 7; // PIR 2 Input pin 7, DOWNSTAIRS
int senseMotion = 0; // variable to hold current state of motion detector
int senseMotion2 = 0; // 2nd variable for 2nd sensor
void setup() {
pinMode(RELAY_PIN, OUTPUT);
pinMode(motionPin, INPUT); //PIRs declared as inputs
pinMode(motionPin2, INPUT);
digitalWrite(RELAY_PIN, HIGH);
strip.begin();
strip.show(); // Initialize all pixels to 'off'
rainbow (30000);
rainbowCycle (30000);
strip.show();
}
void loop() {
senseMotion = digitalRead (motionPin); //set variables equal to what our sensors are reading (on or off)
senseMotion2 = digitalRead (motionPin2);
if (senseMotion == HIGH || senseMotion2 == HIGH) { // Testing both sensors at same time, if high, go to apropriate line.
if (senseMotion2 == HIGH) { // If Upstairs motion sensor is triggered...
digitalWrite(RELAY_PIN, HIGH);
colorWipe (strip.Color (30, 50, 255), 0); // White/blue color sweep going up stairs (Towards the arrow on the strip)
strip.show(); // This being enabled or not, doesnt seem to make a difference. NVM it looks like its more responsive when trying to activate the PIRs one after another
delay (10000); // Wait so someone can get to the bottom or top of stairs, will remove this when 2nd sensor is implemented with an interrupt
//colorChase (strip.Color(255, 25, 25), 5); // Color chase animations, red, green, blue indicating that the light are about to shut down
//colorChase2(strip.Color(25, 255, 25), 5);
//colorChase (strip.Color(25, 25, 255), 5);
colorWipe (strip.Color (0, 0, 0), 0); // This is needed for turn everything off, clear all pixels. More efficient with this here
strip.show();
}
if (senseMotion == HIGH) { // If motion sensor 2 (Downstairs) if high go to next line
digitalWrite(RELAY_PIN, HIGH);
colorWipe2 (strip.Color(30, 50, 255), 0);
strip.show();
delay(10000);
//colorChase (strip.Color(255, 25, 25), 5);
//colorChase2 (strip.Color(25, 255, 25), 5);
//colorChase (strip.Color(25, 25, 255), 5);
colorWipe2 (strip.Color(0, 0, 0), 0);
strip.show();
}
}
else { // no motion = no lights or animate til off
digitalWrite(RELAY_PIN, LOW);
digitalWrite (motionPin, LOW); //turning motion pins low, doesnt seem to make a difference either.
digitalWrite (motionPin2, LOW);
//colorWipe (strip.Color(0, 0, 0), 30);
strip.show();
}
}
//Function time!
// LED animation fuction, 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);
}
}
// LED animate the other direction
void colorWipe2(uint32_t c, uint8_t wait) {
for(uint16_t i=664; i<strip.numPixels(); i--) {
strip.setPixelColor(i, c);
strip.show();
delay(wait);
}
}
// Every other LED is on (from arduino forum)
void everyOther(uint32_t c, uint8_t wait) {
for(uint16_t k=0; k<strip.numPixels(); k++) {
strip.setPixelColor(2*k, c);
strip.show();
delay(wait);
}
}
//Opposite from above function (from arduino forum)
void everyOther2(uint32_t c, uint8_t wait) {
for(uint16_t k=0; k<strip.numPixels(); k++) {
strip.setPixelColor((2*k+1), c);
strip.show();
delay(wait);
}
}
//Rainbow fade effect (from adafruit)
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);
}
}
// 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);
}
}
// Chase one dot down the full strip.
void colorChase(uint32_t c, uint8_t wait) {
int i;
// Start by turning all pixels off:
for(i=0; i<strip.numPixels(); i++)
strip.setPixelColor(i, 0);
// Then display one pixel at a time:
for(i=0; i<strip.numPixels(); i++) {
strip.setPixelColor(i, c); // Set new pixel 'on'
strip.show(); // Refresh LED states
strip.setPixelColor(i, 0); // Erase pixel, but don't refresh!
delay(wait);
}
strip.show(); // Refresh to turn off last pixel
}
// Chase one dot down the full strip, opposite direction.
void colorChase2(uint32_t c, uint8_t wait) {
int i;
// Start by turning all pixels off:
for(i=0; i<strip.numPixels(); i++)
strip.setPixelColor(i, 0);
// Then display one pixel at a time:
for(i=59; i<strip.numPixels(); i--) {
strip.setPixelColor(i, c); // Set new pixel 'on'
strip.show(); // Refresh LED states
strip.setPixelColor(i, 0); // Erase pixel, but don't refresh!
delay(wait);
}
strip.show(); // Refresh to turn off last pixel
}
// 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) {
if(WheelPos < 85) {
return strip.Color(WheelPos * 3, 255 - WheelPos * 3, 0);
} else if(WheelPos < 170) {
WheelPos -= 85;
return strip.Color(255 - WheelPos * 3, 0, WheelPos * 3);
} else {
WheelPos -= 170;
return strip.Color(0, WheelPos * 3, 255 - WheelPos * 3);
}
}
// "Larson scanner" = Cylon/KITT bouncing light effect
void scanner(uint8_t r, uint8_t g, uint8_t b, uint8_t wait) {
int i, j, pos, dir;
pos = 0;
dir = 1;
for(i=0; i<((strip.numPixels()-1) * 4); i++) {
// Draw 5 pixels centered on pos. setPixelColor() will clip
// any pixels off the ends of the strip, no worries there.
// we'll make the colors dimmer at the edges for a nice pulse
// look
strip.setPixelColor(pos - 2, strip.Color(r/4, g/4, b/4));
strip.setPixelColor(pos - 1, strip.Color(r/2, g/2, b/2));
strip.setPixelColor(pos, strip.Color(r, g, b));
strip.setPixelColor(pos + 1, strip.Color(r/2, g/2, b/2));
strip.setPixelColor(pos + 2, strip.Color(r/4, g/4, b/4));
strip.show();
delay(wait);
// If we wanted to be sneaky we could erase just the tail end
// pixel, but it's much easier just to erase the whole thing
// and draw a new one next time.
for(j=-2; j<= 2; j++)
strip.setPixelColor(pos+j, strip.Color(0,0,0));
// Bounce off ends of strip
pos += dir;
if(pos < 0) {
pos = 1;
dir = -dir;
}
else if(pos >= strip.numPixels()) {
pos = strip.numPixels() - 2;
dir = -dir;
}
}
}
This is the function down
// LED animation fuction, 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);
}
}
// LED animate the other direction
void colorWipe2(uint32_t c, uint8_t wait) {
for(uint16_t i=664; i<strip.numPixels(); i--) {
strip.setPixelColor(i, c);
strip.show();
delay(wait);
}
}
