diff --git a/src/keyboard.rs b/src/keyboard.rs
index e52216b..8cc03ee 100644
--- a/src/keyboard.rs
+++ b/src/keyboard.rs
@@ -21,6 +21,7 @@ pub struct Keyboard<'d, const KEY_N: usize> {
     num_keys: usize,
 }
 
+#[derive(Debug, defmt::Format)]
 pub enum KeyboardError {
     MaxKeys,
 }
diff --git a/src/main.rs b/src/main.rs
index 94f9f6a..d0e1fd1 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -45,18 +45,54 @@ async fn main(_spawner: Spawner) {
     let driver = Driver::new(p.USB, Irqs);
     let mut usb_buf = usb::UsbKeyboardBuf::new();
     let usbkey = usb::UsbKeyboard::create_usb(&mut usb_buf, driver);
+    let mut keyboard = Keyboard::<6>::new();
 
-    // Set up the signal pin that will be used to trigger the keyboard.
-    let mut signal_pin = Input::new(p.PIN_16, Pull::None);
-
-    // Enable the schmitt trigger to slightly debounce.
+    let mut signal_pin = Input::new(p.PIN_15, Pull::None);
     signal_pin.set_schmitt(true);
-
-    let mut keyboard = Keyboard::<1>::new();
     match keyboard.add_key(signal_pin, 'a') {
         Ok(()) => info!("Key 'a' registered"),
-        Err(_) => {
-            defmt::panic!("Failed to register key!");
+        Err(e) => {
+            defmt::panic!("Failed to register key! {:?}", e);
+        }
+    }
+    let mut signal_pin = Input::new(p.PIN_16, Pull::None);
+    signal_pin.set_schmitt(true);
+    match keyboard.add_key(signal_pin, 'a') {
+        Ok(()) => info!("Key 'a' registered"),
+        Err(e) => {
+            defmt::panic!("Failed to register key! {:?}", e);
+        }
+    }
+    let mut signal_pin = Input::new(p.PIN_17, Pull::None);
+    signal_pin.set_schmitt(true);
+    match keyboard.add_key(signal_pin, 'a') {
+        Ok(()) => info!("Key 'a' registered"),
+        Err(e) => {
+            defmt::panic!("Failed to register key! {:?}", e);
+        }
+    }
+    let mut signal_pin = Input::new(p.PIN_18, Pull::None);
+    signal_pin.set_schmitt(true);
+    match keyboard.add_key(signal_pin, 'a') {
+        Ok(()) => info!("Key 'a' registered"),
+        Err(e) => {
+            defmt::panic!("Failed to register key! {:?}", e);
+        }
+    }
+    let mut signal_pin = Input::new(p.PIN_19, Pull::None);
+    signal_pin.set_schmitt(true);
+    match keyboard.add_key(signal_pin, 'a') {
+        Ok(()) => info!("Key 'a' registered"),
+        Err(e) => {
+            defmt::panic!("Failed to register key! {:?}", e);
+        }
+    }
+    let mut signal_pin = Input::new(p.PIN_20, Pull::None);
+    signal_pin.set_schmitt(true);
+    match keyboard.add_key(signal_pin, 'a') {
+        Ok(()) => info!("Key 'a' registered"),
+        Err(e) => {
+            defmt::panic!("Failed to register key! {:?}", e);
         }
     }
 
diff --git a/src/usb.rs b/src/usb.rs
index b68fecb..fafe632 100644
--- a/src/usb.rs
+++ b/src/usb.rs
@@ -27,8 +27,8 @@ pub enum KeyboardAction {
 impl From<Level> for KeyboardAction {
     fn from(value: Level) -> Self {
         match value {
-            Level::Low => KeyboardAction::Depress,
-            Level::High => KeyboardAction::Press,
+            Level::High => KeyboardAction::Depress,
+            Level::Low => KeyboardAction::Press,
         }
     }
 }