Control Rainbow Effect using AdafruitIO

Other Hardware LEDs and Multiplexing
1

The AdafruitIO connection already works with my NodeMCU, but I don't know how to make it light up. When I press the button in the AdafruitIO Dashboard I receive a message on my Serial monitor saying "HIGH". And the same goes for turning it off. I just don't know to connect both together. Can somebody help me?

// Adafruit IO Digital Output Example
// Tutorial Link: Overview | Adafruit IO Basics: Digital Output | Adafruit Learning System
//
// Adafruit invests time and resources providing this open source code.
// Please support Adafruit and open source hardware by purchasing
// products from Adafruit!
//
// Written by Todd Treece for Adafruit Industries
// Copyright (c) 2016 Adafruit Industries
// Licensed under the MIT license.
//
// All text above must be included in any redistribution.

/************************** Configuration ***********************************/

// edit the config.h tab and enter your Adafruit IO credentials
// and any additional configuration needed for WiFi, cellular,
// or ethernet clients.
#include "config.h"
#include <FastLED.h>
/************************ Example Starts Here *******************************/

// digital pin 5
#define LED_PIN 5
#define LED_TYPE WS2812B
#define COLOR_ORDER GRB
#define NUM_LEDS 60
CRGB leds[NUM_LEDS];

#define BRIGHTNESS 100
#define FRAMES_PER_SECOND 90

uint8_t gHue = 0;

// set up the 'digital' feed
AdafruitIO_Feed *digital = io.feed("digital");

void setup() {

pinMode(LED_PIN, OUTPUT);

//FastLED.addLeds<LED_TYPE,LED_PIN,COLOR_ORDER>(leds, NUM_LEDS).setCorrection(TypicalLEDStrip);
//FastLED.setBrightness(BRIGHTNESS);

// start the serial connection
Serial.begin(115200);

// wait for serial monitor to open
while(! Serial);

// connect to io.adafruit.com
Serial.print("Connecting to Adafruit IO");
io.connect();

// set up a message handler for the 'digital' feed.
// the handleMessage function (defined below)
// will be called whenever a message is
// received from adafruit io.
digital->onMessage(handleMessage);

// wait for a connection
while(io.status() < AIO_CONNECTED) {
Serial.print(".");
delay(500);
}

// we are connected
Serial.println();
Serial.println(io.statusText());
digital->get();

}

void loop() {

// io.run(); is required for all sketches.
// it should always be present at the top of your loop
// function. it keeps the client connected to
// io.adafruit.com, and processes any incoming data.
io.run();
//rainbow(LED_PIN);
//FastLED.show();
//FastLED.delay(1000/FRAMES_PER_SECOND);
//EVERY_N_MILLISECONDS( 20 ) { gHue++; }
//Serial.readString();
/if(LED_PIN == HIGH) {/
fill_rainbow(leds, NUM_LEDS, gHue, 7);
FastLED.show();
FastLED.delay(1000/FRAMES_PER_SECOND);
EVERY_N_MILLISECONDS( 20 ) { gHue++; }
//}

if(LED_PIN == LOW) {
fill_solid(leds, NUM_LEDS, CRGB(0, 0, 0));
FastLED.clear();
}
}

// this function is called whenever an 'digital' feed message
// is received from Adafruit IO. it was attached to
// the 'digital' feed in the setup() function above.
void handleMessage(AdafruitIO_Data *data) {

Serial.print("received <- ");

if(data->toPinLevel() == HIGH)
Serial.println("HIGH");
else
Serial.println("LOW");

digitalWrite(LED_PIN, data->toPinLevel());
}

void rainbow() {
fill_rainbow( leds, NUM_LEDS, gHue, 7);
}

2

instead of reading a PIN you need something to "store" the commands from AdafruitIO

Example:

make a global boolean variable

bool status = false;

change the

if(LED_PIN == HIGH)

to
if (status)

and vice versa the
if(LED_PIN == LOW)
to
if (!status)

and change you boolean variable where you do you print statements
something like

  if(data->toPinLevel() == HIGH)
  {
    Serial.println("HIGH");
    status=true;
    }
  else
  {
    Serial.println("LOW");
    status=false;
  }