WiFi_AP_Relays_DHT11

#include <WiFi.h>

#include <WebServer.h>

#include <Adafruit_NeoPixel.h>

#include <DHT.h> // Βιβλιοθήκη για DHT11

// ΣΤΟΙΧΕΙΑ Wi-Fi

const char* ssid = "Redmi";

const char* password = "12345678";

// Ορισμός Pins

#define BUTTON_1 12 // Touch button 1 (πάνω από LED 4)

#define BUTTON_2 13 // Touch button 2 (πάνω από LED 3)

#define BUTTON_3 14 // Touch button 3 (πάνω από LED 2)

#define RELAY_1 16 // Ρελέ 1

#define RELAY_2 17 // Ρελέ 2

#define LED_PIN 25 // LED strip

#define DHT_PIN 33 // DHT11 στο pin 33

#define NUM_LEDS 5

Adafruit_NeoPixel strip(NUM_LEDS, LED_PIN, NEO_GRB + NEO_KHZ800);

WebServer server(80);

// DHT11

#define DHTTYPE DHT11

DHT dht(DHT_PIN, DHTTYPE);

// Χρώματα (μόνο RGB)

uint32_t RED = strip.Color(255, 0, 0);

uint32_t GREEN = strip.Color(0, 255, 0);

uint32_t BLUE = strip.Color(0, 0, 255);

uint32_t OFF = strip.Color(0, 0, 0);

// Αντιστοίχηση buttons με LED

const int buttonToLed[3] = {4, 3, 2}; // BUTTON_1->LED4, BUTTON_2->LED3, BUTTON_3->LED2

const int buttonPins[3] = {BUTTON_1, BUTTON_2, BUTTON_3};

// Μεταβλητές για τις μετρήσεις

float temperature = 0.0;

float humidity = 0.0;

unsigned long lastRead = 0;

const unsigned long readInterval = 2000; // διάβασμα κάθε 2 δευτερόλεπτα

void checkButtons() {

static unsigned long lastPress = 0;

if (millis() - lastPress < 300) return;

for (int i = 0; i < 3; i++) {

if (digitalRead(buttonPins[i]) == LOW) {

strip.setPixelColor(buttonToLed[i], RED); // Προεπιλογή κόκκινο από τα buttons

strip.show();

lastPress = millis();

break;

}

void setLED(int index, uint32_t color) {

if (index >= 0 && index < NUM_LEDS) {

strip.setPixelColor(index, color);

strip.show();

}

void allLEDs(uint32_t color) {

for (int i = 0; i < NUM_LEDS; i++) strip.setPixelColor(i, color);

strip.show();

}

// Συνάρτηση για ανάγνωση DHT11 (καλείται περιοδικά)

void readDHT() {

if (millis() - lastRead >= readInterval) {

humidity = dht.readHumidity();

temperature = dht.readTemperature(); // σε °C

// Έλεγχος αν η ανάγνωση ήταν επιτυχής

if (isnan(humidity) || isnan(temperature)) {

Serial.println("Αποτυχία ανάγνωσης DHT11");

humidity = -1;

temperature = -1;

}

lastRead = millis();

}

// Δημιουργία HTML σελίδας

String getHTML() {

String html = "<!DOCTYPE html><html>";

html += "<head><meta charset='UTF-8'><meta name='viewport' content='width=device-width, initial-scale=1'>";

html += "<style>";

html += "body { font-family: Arial; text-align: center; background: #ffe4e1; }"; // ροζ υπόβαθρο

html += ".container { max-width: 500px; margin: 20px auto; padding: 20px; background: #fff0f0; border-radius: 15px; box-shadow: 0 4px 8px rgba(0,0,0,0.1); }";

html += "button { padding: 12px 20px; font-size: 16px; margin: 5px; border: none; border-radius: 8px; cursor: pointer; width: 100px; }";

html += ".red { background: #e74c3c; color: white; } .green { background: #2ecc71; color: white; } .blue { background: #3498db; color: white; }";

html += ".on { background: #ff8c66; color: white; } .off { background: #ff6666; color: white; }"; // πορτοκαλί/ροζ

html += ".section { margin: 20px 0; padding: 15px; background: #ffe0e0; border-radius: 10px; }";

html += ".sensor { font-size: 24px; color: #b22222; }"; // σκούρο κόκκινο

html += ".sensor span { color: #ff4500; }"; // πορτοκαλί

html += "</style>";

html += "<script>";

html += "function fetchData() {";

html += " fetch('/data').then(response => response.json()).then(data => {";

html += " document.getElementById('temp').innerText = data.temp.toFixed(1);";

html += " document.getElementById('hum').innerText = data.hum.toFixed(1);";

html += " }).catch(err => console.log(err));";

html += "}";

html += "setInterval(fetchData, 2000);"; // ανανέωση κάθε 2 δευτερόλεπτα

html += "</script>";

html += "</head><body><div class='container'>";

html += "<h1 style='color:#b22222;'>ARD:Icon II Control</h1>";

// Ενότητα αισθητήρων

html += "<div class='section'><h3 style='color:#ff6347;'>🌡️ Θερμοκρασία & Υγρασία</h3>";

html += "<p class='sensor'>Θερμοκρασία: <span id='temp'>--</span> °C</p>";

html += "<p class='sensor'>Υγρασία: <span id='hum'>--</span> %</p>";

html += "</div>";

// Ρελέ

html += "<div class='section'><h3 style='color:#ff6347;'>🔌 Ρελέ</h3>";

html += "<a href='/relay1/on'><button class='on'>ΡΕΛΕ 1 ON</button></a>";

html += "<a href='/relay1/off'><button class='off'>ΡΕΛΕ 1 OFF</button></a><br>";

html += "<a href='/relay2/on'><button class='on'>ΡΕΛΕ 2 ON</button></a>";

html += "<a href='/relay2/off'><button class='off'>ΡΕΛΕ 2 OFF</button></a></div>";

// LED ανά θέση

html += "<div class='section'><h3 style='color:#ff6347;'>💡 LED ανά Θέση</h3>";

for (int i = 2; i <= 4; i++) {

html += "<div><b>LED " + String(i) + "</b><br>";

html += "<a href='/led" + String(i) + "/red'><button class='red'>R</button></a>";

html += "<a href='/led" + String(i) + "/green'><button class='green'>G</button></a>";

html += "<a href='/led" + String(i) + "/blue'><button class='blue'>B</button></a>";

html += "<a href='/led" + String(i) + "/off'><button class='off'>OFF</button></a></div>";

}

html += "</div>";

// Όλα τα LED

html += "<div class='section'><h3 style='color:#ff6347;'>✨ Όλα τα LED</h3>";

html += "<a href='/all/red'><button class='red'>ΟΛΑ R</button></a>";

html += "<a href='/all/green'><button class='green'>ΟΛΑ G</button></a>";

html += "<a href='/all/blue'><button class='blue'>ΟΛΑ B</button></a>";

html += "<a href='/all/off'><button class='off'>ΟΛΑ OFF</button></a></div>";

html += "</div></body></html>";

return html;

}

void setup() {

Serial.begin(115200);

// Pins

pinMode(RELAY_1, OUTPUT);

pinMode(RELAY_2, OUTPUT);

pinMode(BUTTON_1, INPUT_PULLUP);

pinMode(BUTTON_2, INPUT_PULLUP);

pinMode(BUTTON_3, INPUT_PULLUP);

digitalWrite(RELAY_1, LOW);

digitalWrite(RELAY_2, LOW);

// LED

strip.begin();

allLEDs(OFF);

// DHT11

dht.begin();

// Wi-Fi

Serial.print("Σύνδεση σε ");

Serial.println(ssid);

WiFi.begin(ssid, password);

int attempts = 0;

while (WiFi.status() != WL_CONNECTED && attempts < 40) {

delay(500);

Serial.print(".");

attempts++;

}

if (WiFi.status() == WL_CONNECTED) {

Serial.println("\n✅ Συνδέθηκε! IP: " + WiFi.localIP().toString());

// Routes

server.on("/", []() { server.send(200, "text/html", getHTML()); });

// Διαδρομή για δεδομένα αισθητήρων (JSON)

server.on("/data", []() {

String json = "{\"temp\":" + String(temperature) + ",\"hum\":" + String(humidity) + "}";

server.send(200, "application/json", json);

});

// Relay 1

server.on("/relay1/on", []() { digitalWrite(RELAY_1, HIGH); server.sendHeader("Location", "/"); server.send(303); });

server.on("/relay1/off", []() { digitalWrite(RELAY_1, LOW); server.sendHeader("Location", "/"); server.send(303); });

// Relay 2

server.on("/relay2/on", []() { digitalWrite(RELAY_2, HIGH); server.sendHeader("Location", "/"); server.send(303); });

server.on("/relay2/off", []() { digitalWrite(RELAY_2, LOW); server.sendHeader("Location", "/"); server.send(303); });

// LED routes

for (int led = 2; led <= 4; led++) {

int idx = led;

server.on(("/led" + String(led) + "/red").c_str(), [idx]() { setLED(idx, RED); server.sendHeader("Location", "/"); server.send(303); });

server.on(("/led" + String(led) + "/green").c_str(), [idx]() { setLED(idx, GREEN); server.sendHeader("Location", "/"); server.send(303); });

server.on(("/led" + String(led) + "/blue").c_str(), [idx]() { setLED(idx, BLUE); server.sendHeader("Location", "/"); server.send(303); });

server.on(("/led" + String(led) + "/off").c_str(), [idx]() { setLED(idx, OFF); server.sendHeader("Location", "/"); server.send(303); });

}

// All LEDs

server.on("/all/red", []() { allLEDs(RED); server.sendHeader("Location", "/"); server.send(303); });

server.on("/all/green", []() { allLEDs(GREEN); server.sendHeader("Location", "/"); server.send(303); });

server.on("/all/blue", []() { allLEDs(BLUE); server.sendHeader("Location", "/"); server.send(303); });

server.on("/all/off", []() { allLEDs(OFF); server.sendHeader("Location", "/"); server.send(303); });

server.begin();

} else {

Serial.println("\n❌ Αποτυχία σύνδεσης!");

}

void loop() {

server.handleClient();

checkButtons();

readDHT(); // περιοδική ανάγνωση αισθητήρα

}