Programming bluetooth module JY-MCU v1.06 I have a popular bluetooth module JY-MCU version 1.06 (picture below). Before i insert it to my arduino project I want to configure the name, bound speed and the pass code using usb-to-serial link. But I am facing a problem where the device does not respond to commands. Please let me explain.

I send the module to programming mode by applying +5V on 'key'

Then I send commands using CoolTerm program:

AT+NAMEmyArduinoProject
&gt; OKyour set name


Ok. setting the name works as expected. But that is the only thing that worked for me. Other commands give no response:

AT

AT+BAUD2

AT+VERSION

AT+VERSION?


Maybe you had this happen to you? I am I sending wrong commands or doing something wrong? Please help me to figure out how to control this module.
OK, I figured it out. It looks like CoolTerm was sending wrong line endings. Thus the only command that worked was name change as it interpreted the extra symbols as part of the name specification. Now I am using in built Arduino serial communication and it works like a charm!