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--- iothings:proiecte:2025sric:windowopener [2025/04/23 13:24]
matei.neaga
+++ iothings:proiecte:2025sric:windowopener [2025/05/18 18:18] (current)
matei.neaga [Window opener, based on gas detection]
@@ Line 4: / Line 4: @@
   * Email: mateineaga@outlook.com, matei.neaga@stud.mec.upb.ro
   * Master: IA
+====== Introduction ======
+This project aims to build a setup based on a servomechanism and a sensor MQ-5, with the purpose of opening a window in case the gas concentration rises above a desired value.
+====== Context ======
+Block diagram of the project
+{{ :iothings:proiecte:2025sric:block-diagram-neaga-matei.png |}}
+Flowchart of the project
+{{ :iothings:proiecte:2025sric:flowchart-neaga-matei.png |}}
+====== Hardware ======
+  * ESP32 board
+  * MQ-4 sensor, detecting SnO2
+  * SG90 servomechanism
+  * microusb - usb A cable
+  * dupont cables
+====== Software ======
+Code snippets
+<code cpp>
+#include <WiFi.h>
+#include <WebServer.h>
+#include <ESP32Servo.h>
+const char* ssid = "";
+const char* password = "";
+#define ANALOG_PIN 34  // Pinul conectat la AO al senzorului MQ-4
+#define SERVO_PIN 13   // Pinul conectat la servomotor
+int valoare_analogica = 0;
+String nivelGaz = "";
+String culoareNivel = "green";
+bool servoActiv = false;
+bool modAutomat = true;
+int pragActivare = 800;
+Servo myservo;
+</code>
+<code cpp>
+void loop() {
+  server.handleClient();
+  valoare_analogica = analogRead(ANALOG_PIN);
+  if (modAutomat) {
+    if (valoare_analogica >= pragActivare && !servoActiv) {
+      activeazaServo();
+    } else if (valoare_analogica < pragActivare && servoActiv) {
+      dezactiveazaServo();
+    }
+  }
+  delay(100);
+}
+// Funcție pentru activarea servomotorului
+void activeazaServo() {
+  myservo.write(90);
+  servoActiv = true;
+  Serial.println("Servo activat!");
+}
+// Funcție pentru dezactivarea servomotorului
+void dezactiveazaServo() {
+  myservo.write(0);
+  servoActiv = false;
+  Serial.println("Servo dezactivat!");
+}
+</code>
+====== Challenges ======
+Figuring out a way to design the webpage to allow me to switch the servomechanism to "automated" or "manual" mode.
+====== References ======
+-