diff --git a/main.py b/main.py
new file mode 100644
index 0000000..bb3701c
--- /dev/null
+++ b/main.py
@@ -0,0 +1,158 @@
+from machine import Pin, UART
+import time
+
+# ============================================================
+# PIN-EMPFEHLUNGEN (Pico 2 W)
+# ============================================================
+# UART für DFPlayer-kompatibles MP3-Modul
+UART_ID = 1
+UART_TX_GPIO = 8   # Pico TX -> MP3 RX
+UART_RX_GPIO = 9   # Pico RX <- MP3 TX
+
+# Buttons (jeweils gegen GND, interner Pull-Up)
+GPIO_CRY   = 2
+GPIO_WHIM  = 3
+GPIO_GIG   = 4
+GPIO_STOP  = 5
+GPIO_PEE   = 6
+
+# Pumpen-Ausgang (später Treiber/ULN2003 etc.)
+GPIO_PUMP_OUT = 7
+
+# ============================================================
+# DFPLAYER / MP3-MODUL SETUP (laut Datenblatt 9600 baud, 3.3V TTL)
+# ============================================================
+uart = UART(
+    UART_ID,
+    baudrate=9600,
+    bits=8,
+    parity=None,
+    stop=1,
+    tx=Pin(UART_TX_GPIO),
+    rx=Pin(UART_RX_GPIO),
+)
+
+def dfplayer_cmd(cmd, param=0, feedback=False):
+    """
+    DFPlayer Serial Protocol:
+    0x7E 0xFF 0x06 CMD FB PAR_H PAR_L CHK_H CHK_L 0xEF
+    """
+    start = 0x7E
+    ver   = 0xFF
+    ln    = 0x06
+    fb    = 0x01 if feedback else 0x00
+    ph    = (param >> 8) & 0xFF
+    pl    = param & 0xFF
+
+    checksum = -(ver + ln + cmd + fb + ph + pl) & 0xFFFF
+    ch = (checksum >> 8) & 0xFF
+    cl = checksum & 0xFF
+
+    packet = bytes([start, ver, ln, cmd, fb, ph, pl, ch, cl, 0xEF])
+    uart.write(packet)
+
+def df_set_volume(vol):
+    """Volume 0..30"""
+    vol = max(0, min(30, vol))
+    dfplayer_cmd(0x06, vol)
+
+def df_play_mp3(track_no):
+    """
+    Play track from /mp3 folder:
+    /mp3/0001.mp3 -> track_no=1
+    /mp3/0002.mp3 -> track_no=2
+    ...
+    """
+    dfplayer_cmd(0x12, track_no)
+
+def df_stop():
+    """Stop playback"""
+    dfplayer_cmd(0x16, 0)
+
+def df_pause():
+    """Pause (optional)"""
+    dfplayer_cmd(0x0E, 0)
+
+def df_resume():
+    """Resume (optional)"""
+    dfplayer_cmd(0x0D, 0)
+
+# Kurze Boot-Wartezeit, damit Modul initialisieren kann
+time.sleep_ms(800)
+df_set_volume(22)  # 0..30, ggf. anpassen
+
+# ============================================================
+# BUTTONS SETUP
+# ============================================================
+btn_cry  = Pin(GPIO_CRY,  Pin.IN, Pin.PULL_UP)
+btn_whim = Pin(GPIO_WHIM, Pin.IN, Pin.PULL_UP)
+btn_gig  = Pin(GPIO_GIG,  Pin.IN, Pin.PULL_UP)
+btn_stop = Pin(GPIO_STOP, Pin.IN, Pin.PULL_UP)
+btn_pee  = Pin(GPIO_PEE,  Pin.IN, Pin.PULL_UP)
+
+pump_out = Pin(GPIO_PUMP_OUT, Pin.OUT)
+pump_out.value(0)
+
+# Entprellung
+DEBOUNCE_MS = 80
+
+last_ms = {
+    "cry": 0,
+    "whim": 0,
+    "gig": 0,
+    "stop": 0,
+    "pee": 0,
+}
+
+def is_pressed(pin: Pin) -> bool:
+    """Active-low button"""
+    return pin.value() == 0
+
+def allow(key: str) -> bool:
+    now = time.ticks_ms()
+    if time.ticks_diff(now, last_ms[key]) > DEBOUNCE_MS:
+        last_ms[key] = now
+        return True
+    return False
+
+# ============================================================
+# PIPI-LOGIK (erstmal als Impuls, bühnenfreundlicher als 'solange gedrückt')
+# ============================================================
+PIPI_PULSE_MS = 900   # Dauer Pumpen-Impuls (später anpassen)
+pipi_until = 0
+
+def pipi_trigger():
+    global pipi_until
+    pipi_until = time.ticks_add(time.ticks_ms(), PIPI_PULSE_MS)
+
+# ============================================================
+# MAIN LOOP
+# ============================================================
+while True:
+    # STOP hat Priorität (soll sofort alles beenden)
+    if is_pressed(btn_stop) and allow("stop"):
+        df_stop()
+        pipi_until = 0
+        pump_out.value(0)
+
+    # Sounds
+    if is_pressed(btn_cry) and allow("cry"):
+        df_play_mp3(1)   # /mp3/0001.mp3
+
+    if is_pressed(btn_whim) and allow("whim"):
+        df_play_mp3(2)   # /mp3/0002.mp3
+
+    if is_pressed(btn_gig) and allow("gig"):
+        df_play_mp3(3)   # /mp3/0003.mp3
+
+    # Pipi-Trigger (Impuls)
+    if is_pressed(btn_pee) and allow("pee"):
+        pipi_trigger()
+
+    # Pumpen-Ausgang entsprechend Impulszeit
+    if time.ticks_diff(pipi_until, time.ticks_ms()) > 0:
+        pump_out.value(1)
+    else:
+        pump_out.value(0)
+
+    time.sleep_ms(10)