HC06 Bluetooth sensor is a device to communicate with other bluetooth device. This project will show how to send a character from an Android bluetooth app to Arduin serial monitor window.

Step 1: Install latest Arduino IDE (If you have Arduino IDE, please skip this step). Download Arduino IDe from https://www.arduino.cc/en/Main/Software?setlang=en , then install the software.

Step 2: Download sketch code  into your computer.

Step 3: Open Arduino IDE -> click file -> click Open -> choose code “hc06.ino”, upload the code into your Arduin (Note: Please don’t connect HC06 bluetooth sensor with UNO board when you upload the code)

Step 4: Choose corresponding board/port for your project,upload the sketch to the board.

Step 5: Connect the HC06 bluetooth sensor to arduin as per following graph:

Step 6: Download Bluetooth Control app and install it into your android cell phone or other android device.

Step 7: Turn on Bluetooth switch of your android device and pair device “HC06” in setting page. Use the default passcode “0000” or “1234”.

Step 8: Open the APP and select the “HC06”. When type a character “a” in android app, you will see character “a” showing on the arduin serial monitor.