First we call upon all the libraries we'll need #include ESP32Servo.h #include Wire.h #include LiquidCrystal_I2C.h

Then we initialize the LCD screen and the servo motor. We set the potentiometer pin to 34 and the max value of the ADC to 4096 in the LiquidCrystal_I2C LCD = LiquidCrystal_I2C(0x27, 16, 2); Servo myServo; int potpin = 34; int ADC_Max = 4096;

In the Void Setup We set turn on the backlight of the LCD and clear it and print on it thetext "servo position" and the "=" in the next line. We tell the esp the servo's signal is connected to pin 18. void setup() { LCD.clear(); LCD.init(); LCD.backlight(); LCD.setCursor(0, 0); LCD.print("Servo Position "); LCD.setCursor(0, 1); LCD.print("="); myServo.attach(18); }

void loop() { int pos = analogRead(potpin); This line reads the signal of potentiometer and stores it in the variable pos. int angle = map(pos, 0, ADC_Max, 0, 180); Here the map function transforms the value of the potentiometer to the angle of the servo motor. myServo.write(angle); This is where the servo motor moves to the angle we just mapped. LCD.setCursor(1, 1); LCD.print(angle); delay(100);} Then it prints the angle on the LCD screen in the second row and the second column.

First we call upon all the libraries we'll need #include WiFi.h #include HTTPClient.h

const char* ssid = "network"; put your wifi network const char* password = "password"; wifi password const char* HorizonServer = put the http request here in a variable.

In the void setup() initiate the serial and the wifi connection. It will keep trying to connect to the wifi until it does. once connected it'll print ""Connected to WiFi network with IP Address: " and the IP address" In the void loop() we check the connection and retrieve the data. Note we sent a request every 5 seconds

              void setup() {
                Serial.begin(115200); 
              
                WiFi.begin(ssid, password);
                Serial.println("Connecting");
                while(WiFi.status() != WL_CONNECTED) {
                  delay(500);
                  Serial.print(".");
                }
                Serial.println("");
                Serial.print("Connected to WiFi network with IP Address: ");
                Serial.println(WiFi.localIP());
               
                Serial.println("Timer set to 5 seconds (timerDelay variable), it will take 5 seconds before publishing the first reading.");

                void loop() {
                   
                  if ((millis() - lastTime) > timerDelay) {
                    //Check WiFi connection status
                    if(WiFi.status()== WL_CONNECTED){
                      HTTPClient http;
                
                     String serverPath = HorizonServer;
                      
                      // Your Domain name with URL path or IP address with path
                      http.begin(serverPath.c_str());
                      
                    
                      int httpResponseCode = http.GET();
                      
                      if (httpResponseCode>0) {
                        Serial.print("HTTP Response code: ");
                        Serial.println(httpResponseCode);
                        String payload = http.getString();
                        Serial.println(payload);
                      }
                      else {
                        Serial.print("Error code: ");
                        Serial.println(httpResponseCode);
                      }
                      http.end();
                    }
                    else {
                      Serial.println("WiFi Disconnected");
                    }
                    lastTime = millis();
                  }
                } 
              }