diff --git a/toothbrush-timer.ino b/toothbrush-timer.ino
new file mode 100644
index 0000000..1216a1d
--- /dev/null
+++ b/toothbrush-timer.ino
@@ -0,0 +1,199 @@
+#include <Adafruit_GFX.h>
+#include <Adafruit_SSD1306.h>
+#include <math.h>
+
+#define SCREEN_WIDTH 128
+#define SCREEN_HEIGHT 32
+#define OLED_RESET -1
+Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);
+
+// Button and buzzer pins
+const int buttonPin = 7;
+const int buzzerPin = 8;
+
+unsigned long lastUpdate = 0;
+int remaining = 0;
+bool running = false;
+
+// ------------------------------------------------------------
+// Draw a star-shaped sparkle
+// ------------------------------------------------------------
+void drawStar(int x, int y) {
+  display.drawPixel(x, y, SSD1306_WHITE);
+  display.drawPixel(x - 1, y, SSD1306_WHITE);
+  display.drawPixel(x + 1, y, SSD1306_WHITE);
+  display.drawPixel(x, y - 1, SSD1306_WHITE);
+  display.drawPixel(x, y + 1, SSD1306_WHITE);
+
+  display.drawPixel(x - 1, y - 1, SSD1306_WHITE);
+  display.drawPixel(x + 1, y - 1, SSD1306_WHITE);
+  display.drawPixel(x - 1, y + 1, SSD1306_WHITE);
+  display.drawPixel(x + 1, y + 1, SSD1306_WHITE);
+}
+
+// ------------------------------------------------------------
+// Celebration animation with glow + sparkles
+// ------------------------------------------------------------
+void showSmiley() {
+  int cx = 64;
+  int cy = 16;
+
+  unsigned long startTime = millis();
+
+  // --- 1. Sparkle burst at the start ---
+  for (int burst = 0; burst < 12; burst++) {
+    display.clearDisplay();
+
+    int sx, sy, dx, dy, dist;
+
+    // Keep sparkles OUTSIDE the face radius
+    do {
+      sx = random(0, 128);
+      sy = random(0, 32);
+
+      dx = sx - cx;
+      dy = sy - cy;
+      dist = sqrt(dx * dx + dy * dy);
+
+    } while (dist < 22);
+
+    drawStar(sx, sy);
+
+    display.display();
+    delay(60);
+  }
+
+  // --- 2. Main 15-second animation ---
+  while (millis() - startTime < 15000) {
+    display.clearDisplay();
+
+    // Pulsing glow radius
+    float t = (millis() - startTime) * 0.008;
+    int pulse = 2 + (sin(t) * 3);
+
+    // Glow ring
+    display.drawCircle(cx, cy, 14 + pulse, SSD1306_WHITE);
+
+    // Face outline
+    display.drawCircle(cx, cy, 14, SSD1306_WHITE);
+
+    // Eyes
+    display.fillCircle(cx - 6, cy - 4, 2, SSD1306_WHITE);
+    display.fillCircle(cx + 6, cy - 4, 2, SSD1306_WHITE);
+
+    // Smile (correct orientation)
+    for (int angle = 20; angle <= 160; angle += 5) {
+      float rad = angle * 0.0174533;
+      int x = cx + cos(rad) * 10;
+      int y = cy + sin(rad) * 10;
+      display.drawPixel(x, y, SSD1306_WHITE);
+    }
+
+    // --- Twinkling sparkles (outside the face) ---
+    for (int i = 0; i < 5; i++) {
+      int sx, sy, dx, dy, dist;
+
+      do {
+        sx = random(0, 128);
+        sy = random(0, 32);
+
+        dx = sx - cx;
+        dy = sy - cy;
+        dist = sqrt(dx * dx + dy * dy);
+
+      } while (dist < 22);  // keep sparkles OUTSIDE the face + glow
+
+      drawStar(sx, sy);
+    }
+
+    display.display();
+    delay(120);
+  }
+
+  // Turn off the display after animation
+  display.clearDisplay();
+  display.display();
+  display.ssd1306_command(SSD1306_DISPLAYOFF);
+}
+
+// ------------------------------------------------------------
+// Draw the horizontal countdown bar + digits
+// ------------------------------------------------------------
+void drawTimer() {
+  display.clearDisplay();
+
+  // Bar dimensions
+  int barHeight = 32;
+  int barWidth = 96;
+
+  // Map remaining seconds to bar width
+  int currentWidth = map(remaining, 0, 90, 0, barWidth);
+
+  // Draw bar left → right
+  display.fillRect(0, 0, currentWidth, barHeight, SSD1306_WHITE);
+
+  // Digits on the right
+  display.setTextSize(2);
+  display.setTextColor(SSD1306_WHITE);
+
+  int digitX = 100;
+  int digitY = 10;
+
+  display.setCursor(digitX, digitY);
+  display.print(remaining);
+
+  display.display();
+}
+
+// ------------------------------------------------------------
+// Setup
+// ------------------------------------------------------------
+void setup() {
+  pinMode(buttonPin, INPUT_PULLUP);
+  pinMode(buzzerPin, OUTPUT);
+
+  display.begin(SSD1306_SWITCHCAPVCC, 0x3C);
+  display.clearDisplay();
+  display.setRotation(0);  // horizontal
+  display.display();
+}
+
+// ------------------------------------------------------------
+// Main loop
+// ------------------------------------------------------------
+void loop() { 
+  // Start timer on button press
+  if (!running && digitalRead(buttonPin) == LOW) {
+    remaining = 90;
+    running = true;
+    display.ssd1306_command(SSD1306_DISPLAYON);
+    
+    delay(200); // debounce
+  }
+
+  if (running) {
+    unsigned long now = millis();
+
+    // Update once per second
+    if (now - lastUpdate >= 1000) {
+      lastUpdate = now;
+      remaining--;
+
+      // Final 5-second countdown beeps (higher pitch)
+      if (remaining > 0 && remaining <= 5) {
+        tone(buzzerPin, 3000, 150);   // 3 kHz beep
+      }
+      // Regular 10-second interval beeps
+      else if (remaining > 0 && remaining % 10 == 0) {
+        tone(buzzerPin, 2000, 150);   // 2 kHz beep
+      }
+
+      if (remaining <= 0) {
+        running = false;
+        showSmiley();
+      }
+    }
+
+    drawTimer();
+  }
+}