HC-05 Bluetooth

[amgen]

a little elementary and you may already know....... are you using the 'escape sequences?' and, with a usb to serial thingy, you can address the 05 from the serial side

[rsocor01]

I found out the hard way that not all HC-05 modules work the same. Use the version AT command and look for modules with the latest firmware versions. Try to establish a serial communication first with a serial communication app.