Im glad yall are selling these now. Beats the heck out of 60$ bluetooth modules. I do smell a breakout board coming for these tho.

Hi everyone,

Does someone have working code for BTM-182? Command set document is very poor.

Thanks.

Darko

I have been having many problems trying to get this module to configure. I have the following setup:
Computer -> Xbee ~~~~~~ Xbee -> MCU -> BTM-182 ~~~~~~ Computer
I have been using the bluetooth on the computer to talk to the module, and If I run different commands such as: "+++" then "ATL3" followed by a CR and it returns OK or ERR every other time. If I send the same command again, while it is still in command mode, it could say ERR when just before it said OK. Everytime I send a command to ask for it to return things, "+++" then "ATI?" followed by a CR, it never returns things. I am able to connect to it from computer, and I am able to connect to it from the MCU. I have the MCU setup to echo anything it receives via xbee to bluetooth, and visa versa.
Can you configure the bluetooth module through the bluetooth connection, or is that something you can only do via the direct Uart connection?
Thanks for your help :-)
Edit Found out what was wrong, which was multiple things:
1. '+++' When I sent a '+++' from my usb xbee adapter, remote xbee would enter command mode. I tried to get around that by having arduino send the '+++', but it was echo'd back from bluetooth and all of the bluetooth responses were sent back via xbee, which put an xbee in command mode. Solution only echo back non + characters.
2. Problem was that the bluetooth responses were looking garbled. The problem was that I was using a read_byte function who's timeout was configured to be too high. A 1 ms timeout is sufficient to capture the data at 19200 baud.
Problems solved, glad I stocked up on these modules while they were in.

I guess i should post this here... i have been getting complaints about this not letting you use :
921.6Kbps
as the baud rate. So i decided to try it out and see. I can set the baud using ATLx... its default is L2 which is 19200bps but when i try L8 which is 921.6Kbps i get ERROR returned. I though heh maybe im typing it wrong so i tried L7 and it works fine!
So i assume that baud rate isnt implemented in this firmware?

How to enable deep sleep or other power saving modes? Can't see anything about it in the AT commands... Thanks, Alex

I am trying to connect the module to a simple Serial TX/RX (ftdi 232 chip). The power supply, TX/RX lines are all 3v. Whenever I send the commands to the chip using hyperterminal, the characters that are typed get repeated multiple times. When I try to type "AT B?" I see "AAAAAAAAAAAAATTTTTTTTTTTT BBBBBBBBBBBBBBBBBBB????????????????" and after hitting the enter key multiple times, "ERROR" is displayed multiple times. I have checked my soldering connections and there are no shorts/bridges between the contacts. Please let me know if anybody has been able to get this to work over simple serial connection. My connections are as follows : PIN15 - GND, PIN14- 3.3v, PIN 10 - UART TX(from PC) , PIN9 - UART RX(to PC).
Thanks,
Rajesh

Way to go SparkFun! You've finally realized that these modules aren't worth the $28 US you were selling them at, thus purchasing my allegiance.

Has anyone had any luck with the USB functionality?

I was curious i recently bought this item and tried to connect it to 3.0v and nothing but when i connect it to 5v it worked. also i was wondering i connected my bluetooth usb to it and connects but i cant see anything in terminal. how do i change the settings in this

Just ordered one of these thanks to freeday! :D Ill be sure update you all with some cool projects...
BTW my blog is http://atomsoft.wordpress.com

I've used the RN-41 before, and I just found this one. I'm not seeing much of a difference between them. What are the pros and cons of using this over the RN-41 (other than cost)?

Hi, any additional infos for PCM interface?
Frequecies, Bit....
What FW is installed in? Gateway, Headset,...?
Thanks

Hi All,
Can anyone confirm for me that CSR/DSR hardware flow control is known to work on these modules? In my application, I have a very small receive buffer, so I must be able to flow off the output of the local bluetooth module so I don't overrun.
There are quite a few modules out there that look very similar, yet none of them seem to indicate that flow control is working. A lot of them reference standard schematics with flow control not used.
I'm happy to pay the extra $$ for a module that is of higher quality and known to be fully functional, as opposed to getting a module from China directly with unknown performance.
thanks.

Hey guys just wanted to share my love for this chip. The soldering technique that worked best for me was to solder 2 resister leads to all four corners of the board and place those leads onto the .1 spaced protoboard, then solder more resister leads onto the pins I needed to access.
The AT command sheet is pretty simple, there are a couple commands that need specific modes to be in so just keep pluggin away. NewSoftSerial library works well, just do a print("ati1\r"); or similar command to submit. The longest part for me was figuring out how to communicate with it i tried ati1, ati1\n, ati1\r\n, then lastly the correct one of ati1\r. Blah blah blah, it auto connects with my android phone great, able to send strings back and forth.
My problem is that it stops auto connecting for some reason with no recurring pattern. Sometimes after 4-5 connections/disconnections, sometimes 10-15. My arduino keeps going but its not making the connections any more. Any clue why?

I didn't see a range spec for this one. Any ideas?<br />
Also has anyone weighed one of these modules? <br />
I wanted to compare it to the RN-41. Anyone with weights on either of these modules? Thanks

May I know this BTM-182 is 1.8V version or 3.3V version?

The specs on this page says "3.0V or 1.8V operation" and the datasheet indicates to different version of the modules (page 1 under General Electrical Specifications). The datasheet also seem to indicate both 1.8 and a 3.3 volt supplies are needed if it should run at 1.8 volts. Could you please clarify this a bit before I turn my modules into smoke particles.

I hate to be repetitive, but any news on the breakout board? Looking to convert my Das Keyboard into a bluetooth keyboard.

Can i connect this module to an AVR UART port and send AT commands via bluetooth to a mobile phone which supports serial port service and also can work as a gsm modem (sony ericsson w880i)? Or it can't make bluetooth connection between a cell phone?

Hi everyone!
I am trying to get bluetooth communication set-up and working on my arduino duemilanove to ultimately communicate with amarino on an android device (similar to @binaryhellstorm).
My group is working on this for our senior design class and the budget is very tight, has anyone been able to get the BTM-182 to communicate with their arduino and what additional hardware/circuitry is needed?
It looks like the duemilanove has a 3.3V source pin that can power the BTM-128, but I'm betting that hooking up the arduino's TX/RX digital pins at 5 volts won't work out too well.
Can anyone give any advice on using this bluetooth device and how difficult it is to set-up communication using the AT command set? We have about 3 weeks for implementation so any advice would be helpful and greatly appreciated (and if there is a positive outlook I can go ahead and order one :D)!
Thank you!

Does anyone have any ideas on how to set the Bluetooth Class of Device for this module?

Did you lose interest in this little bluetooth module? No stock and no breakout =(

These modules are Awesome, even without breakout board, which i eagerly await, allthough the tx/rx contacts came loose on me for one of the units, i learned to reinforce with hotglue and it was fine.
they are tiny, compatible with any bluetooth compute,ahum, my macbook air, shows up as a bluetooth serial adapter. no driver, nothing. just enter the default pin or reset the pin and you're paired. there's only a couple pages to the manual which i skimmed, super easy to use, cheaper than xbee and you can start out by just getting one and communicate between your puter.
also has other types of interfaces apart from uart.
awaiting the next shipment :)
d.

Has anyone gotten this to work with an iOS or Android? Any things to watch out for? I want to build a specialized measurement device and then use a smart phone or pad for the Logger and UI.

How do you change modes?
I suppose AT commands but which?

I just got this module, and I have read the documentation available, but I can't seem to figure out which pin is pin 1, am I overlooking something?

for more info, take a look in the forum, searching for BTM-182.
Got things straightened out now.

I seem to be having some trouble:
with the doohickey hooked up to 3.6V, and a rs232 level shifter, I can communicate with it via hyper terminal... sort of. It does seem to detect baud rates when I send a series of 'AT's to it, but it echoes back way more than I type. For example, if I type 'at', it echoes back 'aaaaaaaattttttttt' or 'aaaaaaaaaaataaaaaaaaaa' or some such. I can occasionally get it to give me an error response from an "ATZ", but it does not give just on "ERROR" but several..
Any thoughts?
(BTW, it does get discovered when I search for it via bluetooth.. although, I dont seem to be able to send to it, or recieve from it.. prob because I am in command mode via serial port)
Thanks.

is there a eagle part for this?

Is the Command Set accurate for this board? I am trying to communicate I cannot get the commands to work.
BlueTooth.print("AT\r\n"); returns OK
but any other command to try to get any data returns "ERROR"
ie: BlueTooth.print("ATC?\r\n");

Is there an ETA on the breakout board?

i am trying to find HID firmware for this and I checked their webpage and there is nothing there...
anyone know where to find this?

Bluetooth arduino's were a cool idea but were just cost prohibitive - how about a new modern attempt based on arduino pro + this little guy at a reasonable pricepoint!

I would appreciate if someone can direct me to a "how to build a wired serial port replacement" link with this. I currently have a full duplex wired connection between the PC and an Atmel @19200baud. I need to replace it with something wireless. I've looked at some options but many RF links are NOT full duplex

Looks promising. When will the AT command reference be published? Couldn't find it on Rayson's site either.

Where do we get programming info for this thing? I'm interested in doing HID stuff mainly, so all these SPP modules are kind of a drag. Though apparently there's HID firmware for this one? Where does one find that?

Iiiiinteresting. So, not knowing much about Bluetooth: Is this something you can put in a remote device to talk with a bluetooth enabled computer? If so, how does this compare to using Xbees in a similar fashion? The cost is comparable, and many more devices have built in Bluetooth than have built in 802.15.4.

How does the USB interface work here? Is a USB interface chip required?

I'd suggest using solder paste, or a very fine tip with solder. Just line up the first pin as best as you can then the diagonal oppostie pin, so that the board is over the pads exactly. Then just run along and do each pin in between. If you look at the Surface Mount Components tutorial on this site the same techniques apply.

Does anyone have any suggestions about how best to solder this to a typical 0.1" prototype board?