DFRobot Bluetooth module issue

[3400tz]

Hi,

I bought this bluetooth module from robotshop: robotshop.com/productinfo.aspx?pc=RB-Dfr-10&lang=en-US

I was able to configure it, I need it as a master (AT+ROLE=1\r\n) so I made all those change to the settings so it can be connected to my slave.

I’m able to list devices around it and stuff like that, but I’m unable to connect to that slave device. I’m read the documentation provided completely (robotshop.com/content/PDF/tel0026-datasheet-cwr-df-bluetooth.pdf) and still haven’t found a way to send the pairing code and stuff like that.

When I send “AT+STATE?\r\n” I get “INQUIRING” and I’m pretty much stuck there.

Somebody can help by pasting here the command flow I should send to successfully connect to my slave ?

Thank you!

[3400tz]

Actually, that’s what the AT mode switch on the module is for. I was able to set the role of the module to master, and when I do AT+ROLE? I do get 1 which is master. It just seems that the documentation is incomplete for the “connect to slave” part. That’s the information I was looking for

[3400tz]

I understand these will connect together but what if the other device is not one of these module ?

So yeah, I’m not using 2 bluetooth v3 devices (one of them and one other slave).
I do have a pairing code on the slave so I do need to specify this somehow.

Please let me know, thank you!

[3400tz]

The device is this thing: efianalytics.com/products/images/class1BtRs232-200.png

It’s connected to a car engine management system. Baud rate is 115200. I should be able to send “S” to it and get its signature. It works with wired serial but not bluetooth.

I’m not sure what the AT+BIND is and what do I need to set it to… Here is the command I have (Arduino):

AT+INIT\r\n
AT+INQ\r\n // return +INQ:12:6F:22FCD6,1F00,7FFF
AT+RNAME?\r\n // return the right name
AT+PSWD=1234\r\n // return OK
AT+UART=115200,0,0\r\n // return OK
AT+STATE? // return +STATE:INQUIRING
AT+LINK=12,6F,22FC // return nothing ?

I’m guessing either i’m using the wrong address somehow or I’m missing a command or two. Any idea ?

Thank you!

[3400tz]

Any update on this ? Please don’t give up I really want this figured out and working!

Thank you!

[3400tz]

Hi,

Have you tried contacting cute digi about the problem? I have been trying to get this to connect as well, but I am also not getting anywhere with it.

I’m not sure how is cute digi related ? I bought this thing from RobotShop and from your username I guess you’re from the company that makes these things. Who is gonna be able to help me with it if it’s not you ? Doesn’t make sense.

[3400tz]

Tried to contact cuteDigi, live chat guy told me to email them and they don’t answer their email… now what ?

[carlitos]

In the datasheet, it is mentioned that PIO pins need to be low for AT+ROLE=1\r\n to work but the module does not give direct access to the pins. We will confirm with the manufacturer and see if changing the device role is possible.

We will post a followup as soon as we get a reply.

[carlitos]

Here is the reply from DFRobot:

These modules will pair to each other automatically when powered. You do not need to change any configuration.

That is, for example if you have 1 module on an Arduino and 1 module connected to your PC through USB/TTL module, you should be able to communicate between the two without the need of establishing a master or slave, or the need of a pairing code.

I’m not sure what changes you have made, or what exactly you are trying to achieve?
Do you want to connect 2 Bluetooth V3 devices?
Do you want to use a pairing code?

[carlitos]

How long have you waited for a reply from cuteDigi? Also, if you are not satisfied with the module, initially contacted us within 10 days of purchasing it, and it is still in mint condition, you can send a message to the support center to request an exchange.

[dfrobottech]

Hi,

What device are you trying to pair with? Have you tried to change the pairing code on the BTV3 to the same password?

#12: AT+PSWD= OK Param: paring password

Default: “1234”
AT+PSWD?
+PSWD:
OK

Also, do you know what the Baud rate of the other device is? you need to set them to have the same baud rate.

Try binding to the device manually before you try to make it do it automatically.

#15: Set and poll binding device address

AT+BIND= OK Param – Binding Bluetooth
device address

Default address:
00:00:00:00:00:00
AT+BIND?
+BIND:
OK

[dfrobottech]

Hi,

Its got me stumped as well…I’ll continue trying on Monday.

[dfrobottech]

Hi,

Have you tried contacting cute digi about the problem? I have been trying to get this to connect as well, but I am also not getting anywhere with it.

[dfrobottech]

Hi,

We make the bluetooth V3 Module which uses a bluetooth Radio which is manufactured by cuteDigi(look at the PDF provided in our product page). They might be able to get you the help you need. They should be more familiar with this Radio.