Connecting to a Waves Node with an ESP8266

Description: After a Wemos Lolin D1 Mini Pro V2 successfully connects to WiFi, it attempts to connect to a public Waves Node (nodes.wavesnodes.com) on Port 80 every 5 seconds. Two green LEDs should both turn ON if all goes well.

Notes: Port 80 is used for an HTTP connection. It enables unsecured data transmission in plain text. Make sure to set the baud rate to 115200 in the Serial Monitor.

Supplies:

1 – Breadboard 400 Points
1 – Wemos Lolin D1 Mini Pro V2
2 – LEDs
1 – 220 Ohm Resistor

Arduino Code:

#include <ESP8266WiFi.h>

// Wi-Fi settings
const char *ssid = "Network Name";
const char *password = "password";

// Waves public node URI
const char *host = "nodes.wavesnodes.com";
const int port = 80;

#define led1 4
#define led2 5

void setup() {

  Serial.begin(115200);
  Serial.println();
  Serial.println();

  pinMode(led1, OUTPUT);
  pinMode(led2, OUTPUT);

   if (ssid == ""){
        Serial.println("WiFi ssid is empty.");
    }

    connectToWiFi();
}

void loop() {

   // Check WiFi connection and reconnect if needed
    if (WiFi.status() != WL_CONNECTED){
        WiFi.disconnect();
        digitalWrite(led1, LOW);
        digitalWrite(led2, LOW);
        connectToWiFi();
    }

    WiFiClient client;

        Serial.printf("\nConnecting to %s ... ", host);
        if (client.connect(host, port)) {
            Serial.println("connected");
            digitalWrite(led2, HIGH);   

        } else {
            Serial.println("connection failed");
            client.stop();
        }
        // Wait for the 5 sec. before next check
        delay(5000);
    
}

void connectToWiFi(){
  
    Serial.printf("Connecting to %s ", ssid);
    WiFi.begin(ssid, password);

    while (WiFi.status() != WL_CONNECTED) {
        delay(500);
        Serial.print(".");
    }
    
    Serial.println(" connected");
    digitalWrite(led1, HIGH);

}