diff --git a/.gitea/workflows/pull_request.yaml b/.gitea/workflows/pull_request.yaml
new file mode 100644
index 0000000..8ba2d08
--- /dev/null
+++ b/.gitea/workflows/pull_request.yaml
@@ -0,0 +1,41 @@
+name: Gavania Merge Build
+run_name: Test successful gavania build on merge request
+
+on:
+  pull_request:
+    types: [opened, reopened, edited, review_requested, synchronize]
+
+jobs:
+  Arduino:
+    steps:
+      - uses: https://github.com/actions/checkout@v3
+
+      - uses: https://github.com/dtolnay/rust-toolchain@stable
+
+      - name: Build
+        run: |
+            cd rust/arduino
+            cargo build
+
+  Pico:
+    steps:
+      - uses: https://github.com/actions/checkout@v3
+
+      - uses: https://github.com/dtolnay/rust-toolchain@stable
+
+      - name: Build
+        run: |
+            cd rust/pico
+            cargo build
+
+  Serial Reader:
+    steps:
+      - uses: https://github.com/actions/checkout@v3
+
+      - uses: https://github.com/dtolnay/rust-toolchain@stable
+
+      - name: Build
+        run: |
+            cd rust/serial_reader
+            cargo build
+
diff --git a/.vscode/tasks.json b/.vscode/tasks.json
index e5e23b1..df1c973 100644
--- a/.vscode/tasks.json
+++ b/.vscode/tasks.json
@@ -25,5 +25,17 @@
 				"cwd": "rust/pico"
 			}
 		},
+		{
+			"type": "cargo",
+			"command": "build",
+			"problemMatcher": [
+				"$rustc"
+			],
+			"group": "build",
+			"label": "SerialReader: cargo build",
+			"options": {
+				"cwd": "rust/serial_reader"
+			}
+		},
 	]
 }
\ No newline at end of file
diff --git a/rust/serial_reader/src/main.rs b/rust/serial_reader/src/main.rs
index 0a94514..8d571e3 100644
--- a/rust/serial_reader/src/main.rs
+++ b/rust/serial_reader/src/main.rs
@@ -80,6 +80,8 @@ fn main() {
             }
         });
 
+        let buffer = serial_info.buffer().unwrap();
+
         connect_button.connect_clicked(move |_| {
             if !CONNECTED.load(SeqCst) {
                 let usb_id = UsbId {
@@ -107,6 +109,9 @@ fn main() {
                 if let Ok(port) = Port::open(usb_id, serialport_settings, 50, 1) {
                     CONNECTED.store(true, SeqCst);
 
+                    let (mut buffer_start, mut buffer_end) = buffer.bounds();
+                    buffer.delete(&mut buffer_start, &mut buffer_end);
+
                     *PORT.lock().unwrap() = Some(port);
                 }
             }