diff --git a/draft_code/buzzer.py b/draft_code/buzzer.py
new file mode 100644
index 00000000..d21a1ead
--- /dev/null
+++ b/draft_code/buzzer.py
@@ -0,0 +1,24 @@
+from machine import Pin, PWM
+import time
+
+# Set up pin 46 as PWM output
+buzzer = PWM(Pin(46))
+
+# Function to play a tone (frequency in Hz, duration in seconds)
+def play_tone(frequency, duration):
+    buzzer.freq(frequency)  # Set frequency
+    buzzer.duty_u16(32768) # 50% duty cycle (32768 is half of 65536)
+    time.sleep(duration)    # Play for specified duration
+    buzzer.duty_u16(0)     # Stop the tone
+
+# Example: Play a 440 Hz tone (A4 note) for 1 second
+play_tone(440, 1)
+
+# Optional: Play a sequence of notes
+notes = [(261, 0.5), (293, 0.5), (329, 0.5), (349, 0.5)]  # C4, D4, E4, F4
+for freq, duration in notes:
+    play_tone(freq, duration)
+    time.sleep(0.1)  # Short pause between notes
+
+# Turn off the buzzer
+buzzer.deinit()
diff --git a/internal_filesystem/apps/com.quasikili.kilculator b/internal_filesystem/apps/com.quasikili.kilculator
deleted file mode 120000
index 22e9cc13..00000000
--- a/internal_filesystem/apps/com.quasikili.kilculator
+++ /dev/null
@@ -1 +0,0 @@
-../../../MPOS-Kilculator/
\ No newline at end of file
diff --git a/internal_filesystem/boot_fri3d-2024.py b/internal_filesystem/boot_fri3d-2024.py
index 4f496475..a5787ee7 100644
--- a/internal_filesystem/boot_fri3d-2024.py
+++ b/internal_filesystem/boot_fri3d-2024.py
@@ -21,8 +21,8 @@ mpos.info.set_hardware_id("fri3d-2024")
 
 # Pin configuration
 SPI_BUS = 2
-SPI_FREQ = 40000000
-#SPI_FREQ = 20000000 # also works but I guess higher is better
+#SPI_FREQ = 40000000
+SPI_FREQ = 20000000 # also works but I guess higher is better
 LCD_SCLK = 7
 LCD_MOSI = 6
 LCD_MISO = 8