Arduino Bluetooth Setup Tips

Try these tips to troubleshoot issues that you face while configuring Arduino® Bluetooth® setup. To connect to your Arduino hardware using an HC-05 or HC-06 Bluetooth module, make sure you have Instrument Control Toolbox installed.

Failure to Program Arduino Board

Connect Arduino hardware to your computer using an USB cable. Make sure that you do not have your Bluetooth device connected to Arduino hardware when you Program the board.

Unable to see Bluetooth Serial COM Port

If you are using the Adafruit® Bluefruit EZ-Link shield or programmer, and you do not see the Bluetooth device serial port in the drop-down menu as shown, click Refresh and wait few seconds for the list to update.

The updated list shows the serial port:

If you are still unable to see the serial port in the drop-down menu, follow these steps:

  • Remove the Bluetooth device from Control Panel > Devices and Printers.

  • Reconnect the Bluetooth device and click Refresh. Check that the Bluetooth serial port appears in the list.

    • If these steps do not work, restart MATLAB®.

Configure a 5 V HC-05 or HC-06

When you configure your 5 V HC-05 or HC-06, use a 5 V FTDI adaptor and connect them, as shown:

Find FTDI Serial Port

Windows

On Windows®, find the FTDI serial port listed as USB Serial Port under Ports (COM & LPT) in the Device Manager, as shown:

Mac

On Mac, type ls /dev/cu.* in the Terminal to find the FTDI serial port, as shown:

Supported Boards for Adafruit Bluefruit EZ-Link Shield and Programmer

Adafruit Bluefruit EZ-Link Shield

If you are using Adafruit Bluefruit EZ-Link shield, only the following boards are supported:

  • Arduino Uno

  • Arduino Mega 2560

  • Arduino Due

Adafruit Bluefruit EZ-Link Programmer

If you are using Adafruit Bluefruit EZ-Link Programmer, only the following boards are supported:

  • Arduino Uno

  • Arduino Mega 2560

  • Arduino Due

  • Arduino Leonardo

  • Arduino Micro

  • Arduino Nano

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