diff --git a/Serial-test/Serial-test.arduino.avr.uno.elf b/Serial-test/Serial-test.arduino.avr.uno.elf
new file mode 100755
index 0000000..03b7155
Binary files /dev/null and b/Serial-test/Serial-test.arduino.avr.uno.elf differ
diff --git a/Serial-test/Serial-test.arduino.avr.uno.hex b/Serial-test/Serial-test.arduino.avr.uno.hex
new file mode 100644
index 0000000..c9f10df
--- /dev/null
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diff --git a/Serial-test/Serial-test.ino b/Serial-test/Serial-test.ino
new file mode 100644
index 0000000..92bef7d
--- /dev/null
+++ b/Serial-test/Serial-test.ino
@@ -0,0 +1,13 @@
+// Serial port test
+int time = 0;
+
+void setup() {
+  Serial.begin(9600);
+  Serial.println("Elapsed time");
+}
+
+void loop() {
+  Serial.println(time);
+  time++;
+  delay(1000);
+}