diff --git a/serial-io/build.gradle.kts b/serial-io/build.gradle.kts
new file mode 100644
index 0000000..560ca3d
--- /dev/null
+++ b/serial-io/build.gradle.kts
@@ -0,0 +1,14 @@
+/*
+ * Examples for Java
+ *
+ * Copyright (c) 2021. Elex. All Rights Reserved.
+ * https://www.elex-project.com/
+ */
+
+plugins {
+    id("elex-java")
+}
+
+dependencies {
+    implementation("com.fazecast:jSerialComm:2.7.0")
+}
diff --git a/serial-io/src/main/java/kr/pe/elex/examples/Blocking.java b/serial-io/src/main/java/kr/pe/elex/examples/Blocking.java
new file mode 100644
index 0000000..48f117a
--- /dev/null
+++ b/serial-io/src/main/java/kr/pe/elex/examples/Blocking.java
@@ -0,0 +1,35 @@
+/*
+ * Examples for Java
+ *
+ * Copyright (c) 2021. Elex. All Rights Reserved.
+ * https://www.elex-project.com/
+ */
+
+package kr.pe.elex.examples;
+
+import com.elex_project.abraxas.Console;
+import com.fazecast.jSerialComm.SerialPort;
+import lombok.extern.slf4j.Slf4j;
+
+@Slf4j
+public class Blocking {
+	public static void main(String... args) {
+		SerialPort serialPort = SerialPort.getCommPort("/dev/ttyS0");
+		serialPort.setComPortParameters(9600, 8, 1, SerialPort.NO_PARITY);
+		serialPort.setComPortTimeouts(SerialPort.TIMEOUT_READ_BLOCKING, 1000, 0);
+		serialPort.openPort();
+
+		try {
+			while (true) {
+
+				byte[] buffer = new byte[512];
+				int numRead = serialPort.readBytes(buffer, buffer.length);
+				Console.writeLine(buffer);
+			}
+		} catch (Throwable e) {
+			log.error("Oops!", e);
+		}
+
+		serialPort.closePort();
+	}
+}
diff --git a/serial-io/src/main/java/kr/pe/elex/examples/ListeningEvents.java b/serial-io/src/main/java/kr/pe/elex/examples/ListeningEvents.java
new file mode 100644
index 0000000..a2ac6f2
--- /dev/null
+++ b/serial-io/src/main/java/kr/pe/elex/examples/ListeningEvents.java
@@ -0,0 +1,127 @@
+/*
+ * Examples for Java
+ *
+ * Copyright (c) 2021. Elex. All Rights Reserved.
+ * https://www.elex-project.com/
+ */
+
+package kr.pe.elex.examples;
+
+import com.elex_project.abraxas.Console;
+import com.fazecast.jSerialComm.*;
+import lombok.extern.slf4j.Slf4j;
+
+@Slf4j
+public class ListeningEvents {
+	public static void main(String... args) {
+		SerialPort serialPort = SerialPort.getCommPort("/dev/ttyS0");
+		serialPort.setComPortParameters(9600, 8, 1, SerialPort.NO_PARITY);
+		serialPort.openPort();
+
+		serialPort.addDataListener(new SerialPortDataListener() {
+			@Override
+			public int getListeningEvents() {
+				return SerialPort.LISTENING_EVENT_DATA_AVAILABLE;
+			}
+
+			@Override
+			public void serialEvent(SerialPortEvent event) {
+				if (event.getEventType() != SerialPort.LISTENING_EVENT_DATA_AVAILABLE)
+					return;
+				byte[] newData = new byte[serialPort.bytesAvailable()];
+				int numRead = serialPort.readBytes(newData, newData.length);
+				Console.writeLine(newData);
+			}
+		});
+
+		serialPort.addDataListener(new SerialPortDataListener() {
+			@Override
+			public int getListeningEvents() {
+				return SerialPort.LISTENING_EVENT_DATA_WRITTEN;
+			}
+
+			@Override
+			public void serialEvent(SerialPortEvent event) {
+				if (event.getEventType() == SerialPort.LISTENING_EVENT_DATA_WRITTEN)
+					Console.writeLine("All bytes were successfully transmitted!");
+			}
+		});
+
+		serialPort.addDataListener(new SerialPortDataListener() {
+			@Override
+			public int getListeningEvents() {
+				return SerialPort.LISTENING_EVENT_DATA_RECEIVED;
+			}
+
+			@Override
+			public void serialEvent(SerialPortEvent event) {
+				byte[] newData = event.getReceivedData();
+				Console.writeLine(newData);
+			}
+		});
+
+		serialPort.addDataListener(new SerialPortPacketListener(){
+			@Override
+			public int getListeningEvents() {
+				return SerialPort.LISTENING_EVENT_DATA_RECEIVED;
+			}
+
+			@Override
+			public void serialEvent(SerialPortEvent event) {
+				byte[] newData = event.getReceivedData();
+				Console.writeLine(newData);
+			}
+
+			@Override
+			public int getPacketSize() {
+				return 64;
+			}
+		});
+
+		serialPort.addDataListener(new SerialPortMessageListener(){
+			@Override
+			public int getListeningEvents() {
+				return SerialPort.LISTENING_EVENT_DATA_RECEIVED;
+			}
+
+			@Override
+			public void serialEvent(SerialPortEvent event) {
+				byte[] newData = event.getReceivedData();
+				Console.writeLine(newData);
+			}
+
+			@Override
+			public byte[] getMessageDelimiter() {
+				return new byte[]{0x7e};
+			}
+
+			@Override
+			public boolean delimiterIndicatesEndOfMessage() {
+				return false;
+			}
+		});
+
+		serialPort.addDataListener(new SerialPortMessageListener(){
+			@Override
+			public int getListeningEvents() {
+				return SerialPort.LISTENING_EVENT_DATA_RECEIVED;
+			}
+
+			@Override
+			public void serialEvent(SerialPortEvent event) {
+				byte[] newData = event.getReceivedData();
+				Console.writeLine(newData);
+			}
+
+			@Override
+			public byte[] getMessageDelimiter() {
+				return new byte[]{'\n'};
+			}
+
+			@Override
+			public boolean delimiterIndicatesEndOfMessage() {
+				return true;
+			}
+		});
+	}
+}
diff --git a/serial-io/src/main/java/kr/pe/elex/examples/NonBlocking.java b/serial-io/src/main/java/kr/pe/elex/examples/NonBlocking.java
new file mode 100644
index 0000000..2179bd4
--- /dev/null
+++ b/serial-io/src/main/java/kr/pe/elex/examples/NonBlocking.java
@@ -0,0 +1,38 @@
+/*
+ * Examples for Java
+ *
+ * Copyright (c) 2021. Elex. All Rights Reserved.
+ * https://www.elex-project.com/
+ */
+
+package kr.pe.elex.examples;
+
+import com.elex_project.abraxas.Console;
+import com.fazecast.jSerialComm.SerialPort;
+import lombok.extern.slf4j.Slf4j;
+
+@Slf4j
+public class NonBlocking {
+	public static void main(String... args) {
+		SerialPort serialPort = SerialPort.getCommPort("/dev/ttyS0");
+		serialPort.setComPortParameters(9600, 8, 1, SerialPort.NO_PARITY);
+		serialPort.setComPortTimeouts(SerialPort.TIMEOUT_NONBLOCKING, 0, 0);
+		serialPort.openPort();
+
+		try {
+			while (true) {
+				while (serialPort.bytesAvailable() == 0) {
+					Thread.sleep(20);
+				}
+
+				byte[] buffer = new byte[serialPort.bytesAvailable()];
+				int numRead = serialPort.readBytes(buffer, buffer.length);
+				Console.writeLine(buffer);
+			}
+		} catch (Throwable e) {
+			log.error("Oops!", e);
+		}
+
+		serialPort.closePort();
+	}
+}
diff --git a/serial-io/src/main/java/kr/pe/elex/examples/Sample.java b/serial-io/src/main/java/kr/pe/elex/examples/Sample.java
new file mode 100644
index 0000000..288cb49
--- /dev/null
+++ b/serial-io/src/main/java/kr/pe/elex/examples/Sample.java
@@ -0,0 +1,11 @@
+/*
+ * Examples for Java
+ *
+ * Copyright (c) 2021. Elex. All Rights Reserved.
+ * https://www.elex-project.com/
+ */
+
+package kr.pe.elex.examples;
+
+public class Sample {
+}
diff --git a/serial-io/src/main/java/kr/pe/elex/examples/SemiBlocking.java b/serial-io/src/main/java/kr/pe/elex/examples/SemiBlocking.java
new file mode 100644
index 0000000..bf8f644
--- /dev/null
+++ b/serial-io/src/main/java/kr/pe/elex/examples/SemiBlocking.java
@@ -0,0 +1,35 @@
+/*
+ * Examples for Java
+ *
+ * Copyright (c) 2021. Elex. All Rights Reserved.
+ * https://www.elex-project.com/
+ */
+
+package kr.pe.elex.examples;
+
+import com.elex_project.abraxas.Console;
+import com.fazecast.jSerialComm.SerialPort;
+import lombok.extern.slf4j.Slf4j;
+
+@Slf4j
+public class SemiBlocking {
+	public static void main(String... args) {
+		SerialPort serialPort = SerialPort.getCommPort("/dev/ttyS0");
+		serialPort.setComPortParameters(9600, 8, 1, SerialPort.NO_PARITY);
+		serialPort.setComPortTimeouts(SerialPort.TIMEOUT_READ_SEMI_BLOCKING, 100, 0);
+		serialPort.openPort();
+
+		try {
+			while (true) {
+
+				byte[] buffer = new byte[512];
+				int numRead = serialPort.readBytes(buffer, buffer.length);
+				Console.writeLine(buffer);
+			}
+		} catch (Throwable e) {
+			log.error("Oops!", e);
+		}
+
+		serialPort.closePort();
+	}
+}
diff --git a/serial-io/src/main/java/kr/pe/elex/examples/Streaming.java b/serial-io/src/main/java/kr/pe/elex/examples/Streaming.java
new file mode 100644
index 0000000..7190799
--- /dev/null
+++ b/serial-io/src/main/java/kr/pe/elex/examples/Streaming.java
@@ -0,0 +1,46 @@
+/*
+ * Examples for Java
+ *
+ * Copyright (c) 2021. Elex. All Rights Reserved.
+ * https://www.elex-project.com/
+ */
+
+package kr.pe.elex.examples;
+
+import com.elex_project.abraxas.Console;
+import com.fazecast.jSerialComm.SerialPort;
+import lombok.extern.slf4j.Slf4j;
+
+import java.io.BufferedInputStream;
+import java.io.BufferedOutputStream;
+import java.io.InputStream;
+import java.io.OutputStream;
+
+@Slf4j
+public class Streaming {
+	public static void main(String... args) {
+		SerialPort serialPort = SerialPort.getCommPort("/dev/ttyS0");
+		serialPort.setComPortParameters(9600, 8, 1, SerialPort.NO_PARITY);
+		serialPort.setComPortTimeouts(SerialPort.TIMEOUT_READ_SEMI_BLOCKING, 0, 0);
+		serialPort.openPort();
+
+		BufferedInputStream is = new BufferedInputStream(serialPort.getInputStream());
+		BufferedOutputStream os = new BufferedOutputStream(serialPort.getOutputStream());
+		try {
+			while (true) {
+
+				if (is.available()<=0){
+					Thread.sleep(100);
+				}
+
+				byte[] buffer = new byte[is.available()];
+				int numRead = is.read(buffer);
+				Console.writeLine(buffer);
+			}
+		} catch (Throwable e) {
+			log.error("Oops!", e);
+		}
+
+		serialPort.closePort();
+	}
+}
diff --git a/settings.gradle.kts b/settings.gradle.kts
index 72f9e56..172e883 100644
--- a/settings.gradle.kts
+++ b/settings.gradle.kts
@@ -13,7 +13,7 @@ include(
     "web-socket-servlet", "web-socket-client",
     "thread", "hibernate", "jdbc-sqlite",
     "xml", "jackson", "jsoup", "markdown", "network", "httpd",
-    "properties",
+    "properties", "serial-io",
     "mustache", "thymeleaf", "locale", "quartz", "sysinfo",
     "imaging"
 )