diff --git a/ch32v-insert-coin/src/debounced_gpio.rs b/ch32v-insert-coin/src/debounced_gpio.rs
index b4e2e14..784c3fd 100644
--- a/ch32v-insert-coin/src/debounced_gpio.rs
+++ b/ch32v-insert-coin/src/debounced_gpio.rs
@@ -14,15 +14,10 @@ pub struct DebouncedGPIO<'a> {
 }
 
 impl<'a> DebouncedGPIO<'a> {
-    pub fn new(
-        pin: AnyPin,
-        pull: Pull,
-        system_tick_rate_hz: usize,
-        debounce_time_ms: usize,
-    ) -> Self {
+    pub fn new(pin: AnyPin, system_tick_rate_hz: usize, debounce_time_ms: usize) -> Self {
         // coin debounce timer (100ms)
         Self {
-            input: Input::new(pin, pull),
+            input: Input::new(pin, Pull::None),
             value: false,
             ready: false,
             active: false,
diff --git a/ch32v-insert-coin/src/main.rs b/ch32v-insert-coin/src/main.rs
index 7e76b42..694ce75 100644
--- a/ch32v-insert-coin/src/main.rs
+++ b/ch32v-insert-coin/src/main.rs
@@ -343,33 +343,17 @@ fn app_main(mut p: hal::Peripherals, app_settings: Settings) -> Settings {
     unsafe { system::init_gpio_irq(main_btn_pin.pin(), main_btn_pin.port(), true, true) };
 
     // coin debouncer (100ms)
-    let mut sense_coin_input = DebouncedGPIO::new(
-        sense_coin_pin.degrade(),
-        Pull::None,
-        core_config.tick_rate_hz,
-        20,
-    );
+    let mut sense_coin_input =
+        DebouncedGPIO::new(sense_coin_pin.degrade(), core_config.tick_rate_hz, 20);
     // main button debouncer (100ms)
-    let mut main_btn_input = DebouncedGPIO::new(
-        main_btn_pin.degrade(),
-        Pull::None,
-        core_config.tick_rate_hz,
-        20,
-    );
+    let mut main_btn_input =
+        DebouncedGPIO::new(main_btn_pin.degrade(), core_config.tick_rate_hz, 20);
     // button debouncer (100ms)
-    let mut volume_btn_input = DebouncedGPIO::new(
-        volume_btn_pin.degrade(),
-        Pull::Down,
-        core_config.tick_rate_hz,
-        100,
-    );
+    let mut volume_btn_input =
+        DebouncedGPIO::new(volume_btn_pin.degrade(), core_config.tick_rate_hz, 100);
     // button debouncer (100ms)
-    let mut light_ctrl_btn_input = DebouncedGPIO::new(
-        light_ctrl_btn_pin.degrade(),
-        Pull::Down,
-        core_config.tick_rate_hz,
-        100,
-    );
+    let mut light_ctrl_btn_input =
+        DebouncedGPIO::new(light_ctrl_btn_pin.degrade(), core_config.tick_rate_hz, 100);
 
     let timer_config = TimerConfig {
         sp_timer_ms: 1000,