diff --git a/arduino/sketch_sep30a.ino b/arduino/sketch_sep30a.ino
new file mode 100644
index 0000000..259bc83
--- /dev/null
+++ b/arduino/sketch_sep30a.ino
@@ -0,0 +1,129 @@
+#include <bluefruit.h>
+#include <Wire.h>
+
+const uint8_t LED_SERVICE_UUID[] =
+{
+    0x6C, 0xCE, 0x98, 0x91, 0xB9, 0xB3, 0x11, 0x87,
+    0x9E, 0x47, 0xF5, 0x67, 0x01, 0x00, 0x4B, 0xE5
+};
+
+const uint8_t LED_CHR_UUID[] =
+{
+    0x6C, 0xCE, 0x98, 0x91, 0xB9, 0xB3, 0x11, 0x87,
+    0x9E, 0x47, 0xF5, 0x67, 0x02, 0x00, 0x4B, 0xE5
+};
+
+BLEService        lbs(LED_SERVICE_UUID);
+BLECharacteristic lsbLED(LED_CHR_UUID);
+BLEConnection* connection;
+
+void ble_start_advertisement(void);
+
+void ble_start_advertisement(void)
+{
+    // Advertising packet
+    Bluefruit.Advertising.addFlags(BLE_GAP_ADV_FLAGS_LE_ONLY_GENERAL_DISC_MODE);
+    Bluefruit.Advertising.addTxPower();
+    Bluefruit.Advertising.addName();
+
+    /* Start Advertising
+    * - Enable auto advertising if disconnected
+    * - Interval:  fast mode = 20 ms, slow mode = 152.5 ms
+    * - Timeout for fast mode is 30 seconds
+    * - Start(timeout) with timeout = 0 will advertise forever (until connected)
+    *
+    * For recommended advertising interval
+    * https://developer.apple.com/library/content/qa/qa1931/_index.html
+    */
+    Bluefruit.Advertising.restartOnDisconnect(true);
+    Bluefruit.Advertising.setInterval(32, 244); // in unit of 0.625 ms
+    Bluefruit.Advertising.setFastTimeout(30);   // number of seconds in fast mode
+    Bluefruit.Advertising.start(0);             // 0 = Don't stop advertising after n seconds
+}
+
+void setup()
+{
+  Serial.begin(9600);
+  while ( !Serial ) delay(10);
+
+  pinMode(LED_BUILTIN, OUTPUT);
+  pinMode(LED_CONN, OUTPUT);
+  digitalWrite(LED_BUILTIN, 0); // led off
+  digitalWrite(LED_CONN, 0); // led off
+
+  Serial.println("Bluetooth connection reciever");
+
+  uint8_t mac[6] = {0};
+  char deviceName[16] = {0};  
+
+  Serial.println("-------------------------------------");
+  Bluefruit.begin(4,0);
+  Bluefruit.getAddr(mac);
+  sprintf(deviceName, "RAK4630-%2X%2X%2X", mac[0], mac[1], mac[2]);
+  Bluefruit.setName(deviceName);
+  Serial.println("LED TEST");
+  digitalWrite(LED_CONN, 1);
+
+  // Configure callbacks
+  Bluefruit.Periph.setConnectCallback(connect_callback);
+  Bluefruit.Periph.setDisconnectCallback(disconnect_callback);
+
+  lbs.begin();
+  lsbLED.setProperties(CHR_PROPS_READ | CHR_PROPS_WRITE);
+  lsbLED.setPermission(SECMODE_OPEN, SECMODE_OPEN);
+  lsbLED.setFixedLen(1);
+  lsbLED.begin();
+  lsbLED.write8(0x00); // led = off
+  lsbLED.setWriteCallback(led_write_callback);
+
+  ble_start_advertisement();
+
+  Serial.println("Started Advertising");
+
+}
+
+
+void disconnect_callback(uint16_t conn_handle, uint8_t reason)
+{
+  (void) conn_handle;
+  (void) reason;
+
+  Serial.println();
+  Serial.print("Disconnected, reason = 0x");
+  Serial.println(reason, HEX);
+  lsbLED.write8(0x0);
+
+}
+
+// callback invoked when central connects
+void connect_callback(uint16_t conn_handle)
+{
+  // Get the reference to current connection
+  connection = Bluefruit.Connection(conn_handle);
+
+  char central_name[32] = { 0 };
+  connection->getPeerName(central_name, sizeof(central_name));
+
+  Serial.print("Connected to ");
+  Serial.println(central_name);
+  Bluefruit.Advertising.start(0);
+}
+
+void led_write_callback(uint16_t conn_hdl, BLECharacteristic* chr, uint8_t* data, uint16_t len)
+{
+  (void) conn_hdl;
+  (void) chr;
+  (void) len; // len should be 1
+
+  // data = 1 -> LED = On
+  // data = 0 -> LED = Off
+  digitalWrite(LED_BUILTIN,data[0]&1);
+  Serial.print("Data: ");
+  Serial.println(data[0],HEX);
+  lsbLED.write8(0x01);
+}
+
+void loop()
+{
+
+}
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