Step 2: Download Amarino app into your android cell phone or other android device. Open the app and search the bluetooth device "HC06" and pair it with android device. use the default passcode "0000" or "1234".
Step 3: Download sketch code and load it into arduino.
Step 4: Type a character "a" in android app, and you will see character "a" showing on the arduino serial monitor.
DownLoad Url osoyoo.com