I had 2m leftover of ws2812b from my drones and I decide to make use of it as kinda cool led lighting for my desk. Anyway everything works, you can select few effects that come with adafruit ws2812b neopixel lib. Naming convention might be slightly messy in few places however project was finished initially in 1hour and wasn’t meant to be released elsewhere, therefore it wasn’t my concern. There might be few bugs here and there therefore report them, however in general code works. You can connect few ESPs with LED sets to the same token. Just change LED_SET define so each ESP has its unique LED_SET unless you want them to do exactly the same stuff. I use my custom ESP board that has built in LEDs so in your case you can get around somehow and change LED0 and LED1 pins.
Anyway apart from that everything should be fine and ready to play with - enjoy.
This is pretty much 15 min project if you replicate it do it:P
#define BLYNK_PRINT Serial // Comment this out to disable prints and save space
#include <ESP8266WiFi.h>
#include <BlynkSimpleEsp8266.h>
#include <Adafruit_NeoPixel.h>
#include <TimeLib.h>
#include <WidgetRTC.h>
// You should get Auth Token in the Blynk App.
// Go to the Project Settings (nut icon).
char auth[] = "well its a secret";
//Global variables
//
bool leds_enable;
bool blynk_connection;
bool change;
uint8_t red, green, blue, effect, led_speed;
float brightness = 1.0;
bool autoLED = false;
bool autoTime = false;
bool syncOnChange = false;
//WS2812B Config
//
#define PIXEL_PIN 14 // Digital IO pin connected to the NeoPixels.
#define PIXEL_COUNT 16 // Pixels Count
//Config leds used to display connection status
//LED0 is red
//LED1 is green
//If you don want to use remove any refrences in the code
//
#define LED0 13 //RED
#define LED1 4 //GREEN
//For multiple config
//
#define LED_SET 2
int currentLedSet = 0; // if not using multiple LED sets please set to LED_SET
Adafruit_NeoPixel strip = Adafruit_NeoPixel(PIXEL_COUNT, PIXEL_PIN, NEO_GRB + NEO_KHZ800);
WidgetLCD lcd(V0);
WidgetRTC rtc;
BLYNK_ATTACH_WIDGET(rtc, V7);
///Prototypes so some ArduinoIDEs wont cri
void leds_off();
void leds_on();
void colorWipe(uint32_t c, uint8_t wait);
void rainbow(uint8_t wait);
void rainbowCycle(uint8_t wait);
void theaterChase(uint32_t c, uint8_t wait);
void theaterChaseRainbow(uint8_t wait);
uint32_t Wheel(byte WheelPos);
void setup()
{
led_speed = 0;
red = 255;
green = 255;
blue = 255;
leds_enable = true;
pinMode(LED0, OUTPUT);
pinMode(LED1, OUTPUT);
digitalWrite(LED1, HIGH);
digitalWrite(LED0, HIGH);
Serial.begin(115200);
Blynk.begin(auth, "gcwifi", "global82");
strip.begin();
strip.show(); // Initialize all pixels to 'off'
Serial.print("Connecting");
while (Blynk.connect() == false) {
// Wait until connected
Serial.print(".");
delay(100);
}
Serial.println();
Blynk.syncAll();
rtc.begin();
lcd.clear();
lcd.print(0, 1, "Welcome Chris!");
}
BLYNK_WRITE(V1) {
if (currentLedSet == LED_SET) {
leds_enable = param.asInt();
change = true;
if (leds_enable) {
Blynk.virtualWrite(8, 0);
autoLED = false;
}
}
}
BLYNK_WRITE(V2) {
if (currentLedSet == LED_SET) {
brightness = (float)param.asInt()/100;
}
}
BLYNK_WRITE(V3) {
if (currentLedSet == LED_SET) {
green = param.asInt();
change = true;
}
}
BLYNK_WRITE(V4) {
if (currentLedSet == LED_SET) {
red = param.asInt();
change = true;
}
}
BLYNK_WRITE(V5) {
if (currentLedSet == LED_SET) {
blue = param.asInt();
change = true;
}
}
BLYNK_WRITE(V6) {
if (currentLedSet == LED_SET) {
led_speed = param.asInt();
}
}
BLYNK_WRITE(V8) {
if (currentLedSet == LED_SET) {
autoLED = param.asInt();
if (autoLED) {
Blynk.virtualWrite(1, 0);
leds_enable = false;
}
}
}
BLYNK_WRITE(V9) {
if (currentLedSet == LED_SET) {
effect = param.asInt();
change = true;
lcd.clear();
switch (effect) {
case 0:
lcd.print(0, 0, "LEDS OFF");
break;
case 1:
lcd.print(0, 0, "LEDS ON");
break;
case 2:
lcd.print(0, 0, "Color Wipe");
break;
case 3:
lcd.print(0, 0, "Theater Chase");
break;
case 4:
lcd.print(0, 0, "Theater Chase");
lcd.print(0, 1, "Rainbow");
break;
case 5:
lcd.print(0, 0, "Rainbow");
break;
case 6:
lcd.print(0, 0, "Rainbow Cycle");
break;
}
}
}
BLYNK_READ(V10) {
if (currentLedSet == LED_SET) {
String timeString = String(hour()) + ":" + String(minute()) + ":" + String(second());
Blynk.virtualWrite(10, timeString);
}
}
BLYNK_WRITE(V11) {
autoTime = param.asInt();
(autoTime) ? Blynk.virtualWrite(12, 255) : Blynk.virtualWrite(12, 0);
}
BLYNK_WRITE(V13) {
if (currentLedSet != LED_SET) syncOnChange = true;
currentLedSet = param.asInt();
}
void loop()
{
if (syncOnChange) {
Blynk.syncAll();
syncOnChange = false;
}
change = false;
if (Blynk.connected()) {
digitalWrite(LED1, HIGH);
digitalWrite(LED0, LOW);
}
else {
digitalWrite(LED0, HIGH);
digitalWrite(LED1, LOW);
}
Blynk.run();
if (leds_enable) {
switch (effect) {
case 0:
leds_off();
break;
case 1:
leds_on();
break;
case 2:
colorWipe(strip.Color(brightness*(float)red, brightness*(float)green, brightness*(float)blue), led_speed);
break;
case 3:
theaterChase(strip.Color(brightness*(float)red, brightness*(float)green, brightness*(float)blue), led_speed);
break;
case 4:
theaterChaseRainbow(led_speed);
break;
case 5:
rainbow(led_speed);
break;
case 6:
rainbowCycle(led_speed);
break;
}
}
else {
leds_off();
}
if (autoLED) {
if (autoTime) {
leds_enable = true;
} else {
leds_enable = false;
}
}
}
////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////
void leds_off() {
for (int i=0; i<strip.numPixels(); i++) {
strip.setPixelColor(i, strip.Color(0, 0, 0));
}
strip.show();
delay(20);
}
void leds_on() {
for (int i=0; i<strip.numPixels(); i++) {
strip.setPixelColor(i, strip.Color(brightness*(float)red, brightness*(float)green, brightness*(float)blue));
}
strip.show();
delay(20);
}
/////////////////////////////////////////////////////////////////////////
//
//Any functions from now on are from Adafruit library with little mods.
//
/////////////////////////////////////////////////////////////////////////
// Fill the dots one after the other with a color
void colorWipe(uint32_t c, uint8_t wait) {
delay(wait);
leds_off();
for(uint16_t i=0; i<strip.numPixels(); i++) {
strip.setPixelColor(i, c);
strip.show();
delay(wait);
Blynk.run();
if (change) {return;}
}
delay(wait);
leds_off();
delay(wait);
for(int i=strip.numPixels(); i>=0; i--) {
strip.setPixelColor(i, c);
strip.show();
delay(wait);
Blynk.run();
if (change) {return;}
}
return;
}
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);
Blynk.run();
if (change) {return;}
}
}
// 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);
Blynk.run();
if (change) {return;}
}
}
//Theatre-style crawling lights.
void theaterChase(uint32_t c, uint8_t wait) {
for (int j=0; j<10; j++) { //do 10 cycles of chasing
for (int q=0; q < 3; q++) {
for (int i=0; i < strip.numPixels(); i=i+3) {
strip.setPixelColor(i+q, c); //turn every third pixel on
}
strip.show();
delay(wait);
Blynk.run();
if (change) {return;}
for (int i=0; i < strip.numPixels(); i=i+3) {
strip.setPixelColor(i+q, 0); //turn every third pixel off
}
}
}
}
//Theatre-style crawling lights with rainbow effect
void theaterChaseRainbow(uint8_t wait) {
for (int j=0; j < 256; j++) { // cycle all 256 colors in the wheel
for (int q=0; q < 3; q++) {
for (int i=0; i < strip.numPixels(); i=i+3) {
strip.setPixelColor(i+q, Wheel( (i+j) % 255)); //turn every third pixel on
}
strip.show();
delay(wait);
Blynk.run();
if (change) {return;}
for (int i=0; i < strip.numPixels(); i=i+3) {
strip.setPixelColor(i+q, 0); //turn every third pixel off
}
}
}
}
// 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);
}
if(WheelPos < 170) {
WheelPos -= 85;
return strip.Color(0, WheelPos * 3, 255 - WheelPos * 3);
}
WheelPos -= 170;
return strip.Color(WheelPos * 3, 255 - WheelPos * 3, 0);
}
And QR code for rest of the stuff:
