Arduino: Blynk Led Strip (NodeMCU + Led Strip - colour & brightness)

02_blynk_led_strip.ino

#define BLYNK_TEMPLATE_ID           "blynk_template_id"
#define BLYNK_DEVICE_NAME           "Quickstart Device"
#define BLYNK_AUTH_TOKEN            "blynk_auth_token"

// Comment this out to disable prints and save space
#define BLYNK_PRINT Serial

#include <ESP8266WiFi.h>
#include <BlynkSimpleEsp8266.h>

// FastLED stuff
#define FASTLED_ESP8266_RAW_PIN_ORDER
#include "FastLED.h"
#define NUM_LEDS1 21
#define LED_TYPE    WS2811
#define COLOR_ORDER GRB
CRGB leds1[NUM_LEDS1];
#define PIN1 D4
int data=255;
int r,g,b;

char auth[] = BLYNK_AUTH_TOKEN;

// Your WiFi credentials.
// Set password to "" for open networks.
char ssid[] = "wifi_name";
char pass[] = "wifi_pass";


// choose colour - using Blynk zeRGBa widget
BLYNK_WRITE(V1)
{
  // get rgb values from V1 params (in Blynk Datastreams V1 pin needs to be type 'string')
  r = param[0].asInt();
  g = param[1].asInt();
  b = param[2].asInt();

  // print values to serial
  Serial.print("r");
  Serial.println(r);
  
  Serial.print("g");
  Serial.println(g);
  
  Serial.print("b");
  Serial.println(b);

  static1(r, g, b,data);
}

// choose brightness - using Blynk slider widget
BLYNK_WRITE(V2)
{
  data = param.asInt();
  static1(r, g, b,data);
}

void static1(int r, int g, int b,int brightness)
{
  FastLED.setBrightness(brightness);
  for (int i = 0; i < NUM_LEDS1; i++ )
  {
    leds1[i] = CRGB(r, g, b);
  }
  FastLED.show();
}


void setup()
{
  // Debug console
  Serial.begin(9600);

  Blynk.begin(auth, ssid, pass);

  FastLED.addLeds<LED_TYPE, PIN1, COLOR_ORDER>(leds1, NUM_LEDS1).setCorrection( TypicalLEDStrip );
}

void loop()
{
  Blynk.run();
}