UV meter

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My girlfriend got sunburned in a tanning salon because new tubes had been installed in the machine without informing customers. Therefore, I designed and built a measuring device using an Arduino Nano controller and a UV light sensor. The instrument displays the raw measured value and the corresponding UV index on a small OLED screen. This makes it possible to check the intensity of the tanning bed before starting a session. This is the first version, developed according to her request, and the program is still under development. In the meantime, I am providing the basic source code below. include include include include define SCREEN_WIDTH 128 define SCREEN_HEIGHT 32 define OLED_RESET -1 AdafruitSSD1306 display(SCREENWIDTH, SCREENHEIGHT, &Wire, OLEDRESET); const int uvPin = A0; // Időzítés const unsigned long sampleInterval = 500; // 0,5 másodperc unsigned long lastSampleTime = 0; // Súlyozott mozgóátlag (2 másodperc = 4 minta) int samples[4] = {0, 0, 0, 0}; int sampleIndex = 0; bool bufferFilled = false; // Súlyok (régi → új) const int weights[4] = {1, 2, 3, 4}; void setup() { if (!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) { while (true); } // 👋 Bejelentkezési képernyő display.clearDisplay(); display.setTextColor(SSD1306_WHITE); display.setTextSize(1); display.setCursor(0, 0); display.println("Hi"); display.setTextSize(2); display.setCursor(0, 12); display.println("Vanda"); display.display(); delay(2000); } void loop() { unsigned long currentMillis = millis(); // 📥…