diff --git a/main.py b/main.py
deleted file mode 100644
index 17f2e40f09894d2ea37297d58adc4733fcc098e8..0000000000000000000000000000000000000000
--- a/main.py
+++ /dev/null
@@ -1,96 +0,0 @@
-from machine import Pin, I2C
-from filefifo import Filefifo
-import ssd1306
-import utime
-
-SAMPLE_RATE = 250
-THRESHOLD = 20000
-MIN_PPI = 30
-MAX_PPI = 500
-MEASURE_INTERVAL_MS = 5000
-REFERENCE_BPM = 75  # Set this to the SpO2 device BPM manually
-
-# ---------- HARDWARE SETUP ----------
-i2c = I2C(1, scl=Pin(15), sda=Pin(14))  # GP1=SCL, GP0=SDA
-oled = ssd1306.SSD1306_I2C(128, 64, i2c)
-
-button = Pin(8, Pin.IN, Pin.PULL_UP)  # SW1
-
-# ---------- GLOBAL VARIABLES ----------
-fifo = Filefifo(10, name="capture_250Hz_02.txt")
-prev = fifo.get()
-curr = fifo.get()
-next_val = fifo.get()
-sample_index = 3
-last_peak_index = -MIN_PPI
-bpm_list = []
-
-measuring = False
-last_button = 1
-last_toggle_time = 0
-start_time = utime.ticks_ms()
-
-# ---------- UI FUNCTION ----------
-def show_screen(bpm=None, measuring=False, ref_bpm=None):
-    oled.fill(0)
-    if not measuring:
-        oled.text("PCN BeatSense", 8, 0)
-        oled.text("Press SW1 to", 16, 24)
-        oled.text("start measuring", 8, 36)
-    else:
-        oled.text("Measuring...", 24, 0)
-        if bpm is not None:
-            oled.text("Your BPM:  {}".format(bpm), 0, 16)
-            if ref_bpm is not None:
-                diff = abs(bpm - ref_bpm)
-                percent = int((diff / ref_bpm) * 100)
-                oled.text("Ref BPM:   {}".format(ref_bpm), 0, 26)
-                oled.text("Diff:      {}%".format(percent), 0, 36)
-                oled.text("OK" if percent <= 10 else "Too far", 0, 48)
-        else:
-            oled.text("BPM: ---", 32, 32)
-        oled.text("SW1 to stop", 0, 56)
-    oled.show()
-
-# ---------- INITIAL SCREEN ----------
-show_screen()
-
-# ---------- MAIN LOOP ----------
-while True:
-    # --- Handle button press ---
-    current_button = button.value()
-    now = utime.ticks_ms()
-
-    if current_button == 0 and last_button == 1 and utime.ticks_diff(now, last_toggle_time) > 300:
-        measuring = not measuring
-        last_toggle_time = now
-        sample_index = 3
-        bpm_list = []
-        start_time = utime.ticks_ms()
-        show_screen(None, measuring, ref_bpm=REFERENCE_BPM)
-
-    last_button = current_button
-
-    # --- If measuring, process data ---
-    if measuring:
-        utime.sleep_ms(4)
-
-        prev = curr
-        curr = next_val
-        next_val = fifo.get()
-        sample_index += 1
-
-        if curr > THRESHOLD and curr > prev and curr > next_val:
-            ppi = sample_index - last_peak_index
-            if MIN_PPI < ppi < MAX_PPI:
-                bpm = int(60000 / (ppi * 1000 / SAMPLE_RATE))
-                bpm_list.append(bpm)
-                last_peak_index = sample_index
-
-        # --- Every 5s: display BPM ---
-        if utime.ticks_diff(utime.ticks_ms(), start_time) >= MEASURE_INTERVAL_MS:
-            avg_bpm = sum(bpm_list) // len(bpm_list) if bpm_list else None
-            show_screen(avg_bpm, measuring, ref_bpm=REFERENCE_BPM)
-            bpm_list = []
-            start_time = utime.ticks_ms()
-