Connecting Arduinos via Bluetooth Mate - Command Mode help

Wireless & IoT
1

Here it goes…

I’m attempting to connect two Arduino pros using the Sparkfun Bluetooth Mate.

I’ve had lots of success connecting the BTMate to the PC and sending data between them. Now I’m trying to use the command mode to configure each of the BTMate modules to connect to one another without the use of a PC. Here’s the problem I keep running in to: I can enter command mode using the $$$ command in the serial monitor (and it responds in the monitor with ‘CMD’), however, after entering command mode, there doesn’t seem to be any response from the module. I’ve tried entering all the commands, always starting with the ‘D’ and ‘E’ commands that are recommended by the user manual, but to no response. I can’t seem to get the device to exit command mode either using the ‘—’ command.

After entering command mode, I always get a rapid blinking of the red LED on the module, and that is when it stops responding to commands.

Any insight into this problem would be greatly appreciated. Thanks for your help!

2

Still working on this issue.

The documentation for the Roving Networks BT Module says that commands that are invalid will return “ERR” and unrecognized commands will return “?”. Since I’m not getting either of these, the module must not be getting any of my commands. I’ve also tried putting AT before all my commands, as I heard that helped with different Bluetooth modules, but I’m still running into these problems.

Any help would be greatly appreciated!

3

Hi natalie.wolch,

I’m having the same problem with you. Do you have any progress on this?