Change HC-05 Bluetooth module settings via AT commands

HC05_atcommands
TechBitar writes, “This is a utility that shows how to change the settings of the ubiquitous HC-05 Bluetooth module using the AT command set. The HC-05 comes with a rich set of AT commands to perform various tasks such as changing the module’s default settings including changing the pass code, the device name, and the baud rate. But the process of switching the HC-05 into ATcommand mode is not straight forward. I will do my best to illustrate the process in simple to follow steps. You can find the full set of AT commands in the attached datasheet.”

You can find his detailed explanation on Instructables.

Via the contact form.

This entry was posted in components, how-to, wireless and tagged , .

Comments

  1. Dan says:

    There’s so much info out there on how to configure the HC-05 but it’s written by people who don’t have the patience to explain it. This is good.

  2. rynius says:

    The command mode can also be entered using the reset pin and long delays (at least 1sec) after. Seems like all the projects out there are arduino based, and not too helpful for me and my breadboards.

  3. Gary Urista says:

    if you power up the module with the key pin high the baud rate will be 38400 as stated in the data sheet attached above

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